通路拓扑影响:完整技术报告
主要发现:在 KEGG 反应网络上计算影响值:45 个比较中至少有 1 条通路 FDR<0.05 的,酶(基因)网络 13 个、联合网络 9 个、代谢物网络 2 个;类黄酮生物合成在酶网络上的影响值最高达 0.88。
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1 分析目的
富集分析只看一条通路里差异分子的数量,不区分它们处在通路的什么位置。处在多条代谢路线交汇处的分子(如分支点化合物、关键酶)变化时,对整条通路的影响通常更大。通路拓扑影响分析把“差异分子在通路网络中的位置重要性”量化为影响值(Pathway Impact),与富集显著性一起判断哪些通路既显著又关键。本流程在同一套 KEGG 反应网络上分别计算代谢物、基因(酶)和两者联合的影响值,并对照三者的一致程度。
2 分析原理
1. 通路网络(来自 KEGG KGML,真实拓扑):每条通路的 KGML 文件给出反应(R 编号)、催化反应的酶(KO 编号)以及反应的底物和产物(化合物 C 编号)。ATP、NADH、H₂O、CO₂ 等通用辅因子和小分子不作为节点。在此基础上构建三种有向网络:
- 代谢物网络(met):节点为化合物;同一反应的底物指向产物,可逆反应再加反向边。这与 MetPA / MetaboAnalyst 的代谢物通路拓扑一致。
- 酶网络(gene):节点为 KO;若 KO₁ 催化反应的产物是 KO₂ 催化反应的底物,则连 KO₁→KO₂(可逆反应的两端都算作底物和产物)。
- 联合网络(joint):节点为 KO 和化合物;底物 → 酶 → 产物(可逆反应加反向边),即显式的“基因(酶)–反应–代谢物”网络。
2. 中心性:相对介数中心性(relative betweenness centrality)。节点 v 的介数 B(v) = Σs≠v≠t σst(v)/σst,σst 为 s 到 t 的最短路径条数,σst(v) 为其中经过 v 的条数;有向图的相对值为 B(v)/[(n−1)(n−2)],n 为通路节点数。用 Brandes 算法计算,并在验收中用 igraph 独立复算。
3. 影响值:节点重要性 wv = 中心性 / 通路内全部节点中心性之和(全部节点之和为 1)。
取值 0–1。基因层的命中节点为至少有 1 个差异基因注释到该 KO 的节点;代谢物层为至少有 1 个差异代谢物注释到该化合物的节点;联合层两者都算。通路内没有任何中介节点(全部中心性为 0)时影响值不可计算,记为 NA。联合层的影响值是在联合网络上直接计算的,不是把两个组学的影响值相加、平均或加权。
4. 富集 P 值:节点水平的超几何检验(与 MetPA 的 ORA 一致)。N 为全部可分析通路中已检测的节点数,K 为该通路已检测节点数,n 为背景中的命中节点数,k 为该通路的命中节点数,P 为上尾概率。联合层把 KO 节点和化合物节点放在同一背景中检验(MetaboAnalyst 联合通路分析的 “combine queries” 方式)。FDR 在每个比较、每一层内对全部可检验通路做 BH 校正。
5. 覆盖率:已检测节点数 / 通路节点总数,说明该通路在本数据中能被观测到的比例;覆盖率低的通路,影响值和 P 值都不可靠。
3 输入数据及预处理
通路数据库:KEGG 参考通路(ko / map)KGML,快照版本见“方法与软件”页;纳入范围与 KEGG 联合富集相同(去掉总览图和人类疾病、器官系统、药物开发类,只保留 7 种代表植物至少一种具有的通路,排除 ko00965)。物种尚未确认,因此使用参考通路而不是某个物种的专属通路,部分节点在本物种中可能不存在。
分子映射:基因经服务商注释的 KO 映射到酶节点;代谢物经服务商注释的 KEGG 化合物编号映射到化合物节点。
已检测与命中:每个比较中,有检验结果的基因所在 KO、至少一组检出的代谢物所在化合物视为已检测;其中有差异分子的节点为命中。差异标准与“差异总览”页相同。
分析单位:影响值依赖差异分子列表,因此按比较计算;没有“全部 30 个样本”版本。跨比较的热图只是把各比较的结果并列展示,不合并统计量。
4 软件、算法及参数
| 软件 / 函数 | 版本 | 用途与关键参数 |
|---|---|---|
| Python | 3.11.18 | KGML 反应表解析、三种网络构建、Brandes 介数中心性(有向、无权,除以 (n−1)(n−2)) |
| scipy.stats.hypergeom | — | 节点水平超几何检验(上尾) |
| igraph | 2.3.4 | 验收时独立复算介数中心性和影响值 |
| ggplot2 / pheatmap | 4.0.3 / 1.0.13 | 影响值气泡图、共同通路对照图、跨比较热图(色标 0–0.5) |
| 参数 | — | 中心性 relative_betweenness;通路节点少于 3 个不计算 |
5 统计指标解释
下表列出本页出现的全部统计指标和缩写(由页面内容自动生成)。全部术语见术语表。
| 术语 | 中文名 | 英文名 | 定义与读法 |
|---|---|---|---|
| P | P 值 | P value | 在原假设(无差异、无相关或无富集)成立时,得到当前或更极端结果的概率,未经多重检验校正。 |
| FDR | 错误发现率 | false discovery rate | 多重检验校正指标,表示在所有判为显著的结果中,预期假阳性所占比例。本报告全部用 Benjamini–Hochberg 方法计算,检验范围在各分析中分别说明(如“该比较的全部配对”“全部可评估通路”)。 |
| BH | Benjamini–Hochberg 校正 | Benjamini–Hochberg procedure | 把 m 个 P 值从小到大排序,第 i 个的校正值为 min(1, min_{k≥i} P_(k)·m/k)。控制 FDR,比 Bonferroni 校正宽松。 |
| NA | 缺失值 | not available | 没有数值。未检出、未检验或不可计算时记为 NA,不当作 0。 |
| KEGG | 京都基因与基因组百科全书 | Kyoto Encyclopedia of Genes and Genomes | 代谢通路和分子功能数据库。本流程用 KEGG 通路、KO、化合物(C 编号)和反应(R 编号)注释。 |
| KO | KEGG 直系同源编号 | KEGG Orthology | K 开头的编号,把不同物种的同功能基因归为一类,用于把基因映射到通路。 |
| ORA | 过表达分析 | over-representation analysis | 检验差异分子在某通路中是否多于随机期望,本流程用超几何检验。 |
| Pathway Impact | 通路拓扑影响值 | pathway impact | 差异分子在通路网络中的位置重要性之和。本流程按 MetPA 方法:在 KEGG 反应网络上计算每个节点的相对介数中心性,归一化为节点重要性(通路内之和为 1),影响值 = 命中节点重要性之和,0–1;越大说明差异分子越集中在通路的关键位置。代谢物、酶(基因)、联合网络三层分别计算,不相加。 |
| WGCNA | 加权基因共表达网络分析 | weighted gene co-expression network analysis | 把相关矩阵经软阈值幂次变换成加权网络,用拓扑重叠聚类得到共表达模块。 |
| KGML | KEGG 标记语言文件 | KEGG Markup Language | KEGG 通路图的 XML 描述文件,记录每个节点的 KO 或化合物编号、坐标以及反应的底物和产物。 |
| MetPA | 代谢通路分析 | Metabolomics Pathway Analysis | 结合超几何富集和通路拓扑(相对介数中心性)的代谢通路分析方法,MetaboAnalyst 的通路分析模块即基于此方法。 |
| betweenness | 介数中心性 | betweenness centrality | 网络中经过某节点的最短路径所占的比例之和,衡量节点作为“桥梁”的作用;相对介数中心性在有向图中再除以 (n−1)(n−2)。 |
| coverage | 通路覆盖率 | pathway coverage | 通路网络中在本数据已检测到的节点数 / 节点总数。 |
6 图表与结果展示
全局结果
表注:comparison 比较;layer 网络层;pathways 可检验通路数;with_hits 有命中节点的通路数;fdr_lt_005 FDR<0.05 的通路数;impact_gt_0 影响值大于 0 的通路数;max_impact 最大影响值。
| comparison | layer | pathways | with_hits | fdr_lt_005 | impact_gt_0 | max_impact | category |
|---|---|---|---|---|---|---|---|
| R1_vs_R2 | gene | 95 | 5 | 0 | 4 | 0.06359 | B_R组内跨水平 |
| R1_vs_R2 | joint | 96 | 5 | 0 | 5 | 0.02476 | B_R组内跨水平 |
| R1_vs_R2 | met | 95 | 0 | 0 | 0 | 0 | B_R组内跨水平 |
| R1_vs_R3 | gene | 95 | 0 | 0 | 0 | 0 | B_R组内跨水平 |
| R1_vs_R3 | joint | 96 | 3 | 0 | 3 | 0.03202 | B_R组内跨水平 |
| R1_vs_R3 | met | 95 | 3 | 0 | 3 | 0.05893 | B_R组内跨水平 |
| R1_vs_R4 | gene | 95 | 80 | 1 | 65 | 1 | B_R组内跨水平 |
| R1_vs_R4 | joint | 96 | 81 | 0 | 79 | 0.3667 | B_R组内跨水平 |
| R1_vs_R4 | met | 95 | 7 | 0 | 3 | 0.08123 | B_R组内跨水平 |
| R1_vs_R5 | gene | 95 | 88 | 0 | 75 | 1 | B_R组内跨水平 |
| R1_vs_R5 | joint | 96 | 89 | 1 | 88 | 0.4063 | B_R组内跨水平 |
| R1_vs_R5 | met | 95 | 20 | 0 | 8 | 0.08123 | B_R组内跨水平 |
| R1_vs_Y1 | gene | 95 | 80 | 3 | 68 | 0.8812 | A_同水平处理间 |
| R1_vs_Y1 | joint | 96 | 81 | 0 | 80 | 0.4138 | A_同水平处理间 |
| R1_vs_Y1 | met | 95 | 11 | 0 | 6 | 0.1212 | A_同水平处理间 |
| R1_vs_Y2 | gene | 95 | 82 | 0 | 68 | 0.8889 | D_跨水平跨处理 |
| R1_vs_Y2 | joint | 96 | 82 | 0 | 81 | 0.4091 | D_跨水平跨处理 |
| R1_vs_Y2 | met | 95 | 9 | 0 | 6 | 0.2399 | D_跨水平跨处理 |
| R1_vs_Y3 | gene | 95 | 81 | 0 | 69 | 1 | D_跨水平跨处理 |
| R1_vs_Y3 | joint | 96 | 82 | 0 | 80 | 0.4545 | D_跨水平跨处理 |
| R1_vs_Y3 | met | 95 | 10 | 0 | 4 | 0.05958 | D_跨水平跨处理 |
| R1_vs_Y4 | gene | 95 | 82 | 0 | 72 | 1 | D_跨水平跨处理 |
| R1_vs_Y4 | joint | 96 | 83 | 0 | 82 | 0.4545 | D_跨水平跨处理 |
| R1_vs_Y4 | met | 95 | 31 | 0 | 13 | 0.3253 | D_跨水平跨处理 |
| R1_vs_Y5 | gene | 95 | 86 | 1 | 74 | 1 | D_跨水平跨处理 |
| R1_vs_Y5 | joint | 96 | 86 | 1 | 85 | 0.4545 | D_跨水平跨处理 |
| R1_vs_Y5 | met | 95 | 18 | 0 | 11 | 0.2399 | D_跨水平跨处理 |
| R2_vs_R3 | gene | 95 | 0 | 0 | 0 | 0 | B_R组内跨水平 |
| R2_vs_R3 | joint | 96 | 2 | 0 | 2 | 0.02426 | B_R组内跨水平 |
| R2_vs_R3 | met | 95 | 2 | 0 | 2 | 0.0543 | B_R组内跨水平 |
| R2_vs_R4 | gene | 95 | 74 | 0 | 62 | 1 | B_R组内跨水平 |
| R2_vs_R4 | joint | 96 | 76 | 0 | 74 | 0.2985 | B_R组内跨水平 |
| R2_vs_R4 | met | 95 | 7 | 0 | 6 | 0.09123 | B_R组内跨水平 |
| R2_vs_R5 | gene | 95 | 86 | 0 | 72 | 1 | B_R组内跨水平 |
| R2_vs_R5 | joint | 96 | 86 | 0 | 85 | 0.4063 | B_R组内跨水平 |
| R2_vs_R5 | met | 95 | 11 | 0 | 7 | 0.09123 | B_R组内跨水平 |
| R2_vs_Y1 | gene | 95 | 76 | 2 | 61 | 0.7999 | D_跨水平跨处理 |
| R2_vs_Y1 | joint | 96 | 78 | 0 | 76 | 0.3773 | D_跨水平跨处理 |
| R2_vs_Y1 | met | 95 | 9 | 0 | 5 | 0.06323 | D_跨水平跨处理 |
| R2_vs_Y2 | gene | 95 | 75 | 0 | 63 | 0.8889 | A_同水平处理间 |
| R2_vs_Y2 | joint | 96 | 76 | 0 | 75 | 0.4088 | A_同水平处理间 |
| R2_vs_Y2 | met | 95 | 11 | 1 | 8 | 0.09786 | A_同水平处理间 |
| R2_vs_Y3 | gene | 95 | 79 | 0 | 65 | 0.8889 | D_跨水平跨处理 |
| R2_vs_Y3 | joint | 96 | 81 | 0 | 79 | 0.3871 | D_跨水平跨处理 |
| R2_vs_Y3 | met | 95 | 23 | 1 | 12 | 0.1173 | D_跨水平跨处理 |
| R2_vs_Y4 | gene | 95 | 82 | 0 | 68 | 1 | D_跨水平跨处理 |
| R2_vs_Y4 | joint | 96 | 84 | 0 | 82 | 0.4091 | D_跨水平跨处理 |
| R2_vs_Y4 | met | 95 | 15 | 0 | 10 | 0.1111 | D_跨水平跨处理 |
| R2_vs_Y5 | gene | 95 | 86 | 0 | 74 | 1 | D_跨水平跨处理 |
| R2_vs_Y5 | joint | 96 | 86 | 1 | 85 | 0.4371 | D_跨水平跨处理 |
| R2_vs_Y5 | met | 95 | 18 | 0 | 12 | 0.1611 | D_跨水平跨处理 |
| R3_vs_R4 | gene | 95 | 82 | 2 | 73 | 1 | B_R组内跨水平 |
| R3_vs_R4 | joint | 96 | 83 | 2 | 82 | 0.3993 | B_R组内跨水平 |
| R3_vs_R4 | met | 95 | 18 | 0 | 14 | 0.1151 | B_R组内跨水平 |
| R3_vs_R5 | gene | 95 | 87 | 1 | 74 | 1 | B_R组内跨水平 |
| R3_vs_R5 | joint | 96 | 87 | 0 | 86 | 0.422 | B_R组内跨水平 |
| R3_vs_R5 | met | 95 | 22 | 0 | 12 | 0.08797 | B_R组内跨水平 |
| R3_vs_Y1 | gene | 95 | 81 | 1 | 66 | 0.8889 | D_跨水平跨处理 |
| R3_vs_Y1 | joint | 96 | 83 | 0 | 81 | 0.3773 | D_跨水平跨处理 |
| R3_vs_Y1 | met | 95 | 10 | 0 | 5 | 0.06323 | D_跨水平跨处理 |
| R3_vs_Y2 | gene | 95 | 79 | 0 | 65 | 1 | D_跨水平跨处理 |
| R3_vs_Y2 | joint | 96 | 80 | 0 | 78 | 0.3425 | D_跨水平跨处理 |
| R3_vs_Y2 | met | 95 | 11 | 0 | 6 | 0.3021 | D_跨水平跨处理 |
| R3_vs_Y3 | gene | 95 | 79 | 0 | 68 | 1 | A_同水平处理间 |
| R3_vs_Y3 | joint | 96 | 81 | 0 | 79 | 0.3658 | A_同水平处理间 |
| R3_vs_Y3 | met | 95 | 13 | 0 | 6 | 0.144 | A_同水平处理间 |
| R3_vs_Y4 | gene | 95 | 82 | 0 | 69 | 1 | D_跨水平跨处理 |
| R3_vs_Y4 | joint | 96 | 85 | 0 | 82 | 0.4091 | D_跨水平跨处理 |
| R3_vs_Y4 | met | 95 | 36 | 0 | 19 | 0.3253 | D_跨水平跨处理 |
| R3_vs_Y5 | gene | 95 | 86 | 2 | 74 | 1 | D_跨水平跨处理 |
| R3_vs_Y5 | joint | 96 | 86 | 1 | 85 | 0.4071 | D_跨水平跨处理 |
| R3_vs_Y5 | met | 95 | 22 | 0 | 15 | 0.08219 | D_跨水平跨处理 |
| R4_vs_R5 | gene | 95 | 63 | 2 | 44 | 0.875 | B_R组内跨水平 |
| R4_vs_R5 | joint | 96 | 65 | 2 | 64 | 0.4348 | B_R组内跨水平 |
| R4_vs_R5 | met | 95 | 10 | 0 | 8 | 0.1887 | B_R组内跨水平 |
| R4_vs_Y1 | gene | 95 | 83 | 0 | 69 | 1 | D_跨水平跨处理 |
| R4_vs_Y1 | joint | 96 | 86 | 0 | 84 | 0.5682 | D_跨水平跨处理 |
| R4_vs_Y1 | met | 95 | 31 | 0 | 21 | 0.25 | D_跨水平跨处理 |
| R4_vs_Y2 | gene | 95 | 84 | 0 | 69 | 1 | D_跨水平跨处理 |
| R4_vs_Y2 | joint | 96 | 86 | 0 | 83 | 0.5227 | D_跨水平跨处理 |
| R4_vs_Y2 | met | 95 | 27 | 0 | 20 | 0.1288 | D_跨水平跨处理 |
| R4_vs_Y3 | gene | 95 | 82 | 0 | 69 | 1 | D_跨水平跨处理 |
| R4_vs_Y3 | joint | 96 | 86 | 0 | 83 | 0.3636 | D_跨水平跨处理 |
| R4_vs_Y3 | met | 95 | 37 | 0 | 23 | 0.144 | D_跨水平跨处理 |
| R4_vs_Y4 | gene | 95 | 87 | 1 | 71 | 1 | A_同水平处理间 |
| R4_vs_Y4 | joint | 96 | 88 | 1 | 87 | 0.4091 | A_同水平处理间 |
| R4_vs_Y4 | met | 95 | 21 | 0 | 11 | 0.141 | A_同水平处理间 |
| R4_vs_Y5 | gene | 95 | 81 | 0 | 74 | 1 | D_跨水平跨处理 |
| R4_vs_Y5 | joint | 96 | 83 | 0 | 83 | 0.5227 | D_跨水平跨处理 |
| R4_vs_Y5 | met | 95 | 22 | 0 | 13 | 0.1288 | D_跨水平跨处理 |
| R5_vs_Y1 | gene | 95 | 85 | 0 | 72 | 1 | D_跨水平跨处理 |
| R5_vs_Y1 | joint | 96 | 87 | 0 | 85 | 0.5682 | D_跨水平跨处理 |
| R5_vs_Y1 | met | 95 | 33 | 0 | 15 | 0.25 | D_跨水平跨处理 |
| R5_vs_Y2 | gene | 95 | 88 | 0 | 73 | 1 | D_跨水平跨处理 |
| R5_vs_Y2 | joint | 96 | 89 | 0 | 87 | 0.5682 | D_跨水平跨处理 |
| R5_vs_Y2 | met | 95 | 31 | 0 | 18 | 0.3021 | D_跨水平跨处理 |
| R5_vs_Y3 | gene | 95 | 85 | 0 | 70 | 0.608 | D_跨水平跨处理 |
| R5_vs_Y3 | joint | 96 | 88 | 0 | 84 | 0.5 | D_跨水平跨处理 |
| R5_vs_Y3 | met | 95 | 34 | 0 | 18 | 0.141 | D_跨水平跨处理 |
| R5_vs_Y4 | gene | 95 | 89 | 1 | 73 | 1 | D_跨水平跨处理 |
| R5_vs_Y4 | joint | 96 | 90 | 1 | 88 | 0.5682 | D_跨水平跨处理 |
| R5_vs_Y4 | met | 95 | 25 | 0 | 12 | 0.141 | D_跨水平跨处理 |
| R5_vs_Y5 | gene | 95 | 83 | 0 | 70 | 1 | A_同水平处理间 |
| R5_vs_Y5 | joint | 96 | 84 | 0 | 83 | 0.5682 | A_同水平处理间 |
| R5_vs_Y5 | met | 95 | 22 | 0 | 14 | 0.1682 | A_同水平处理间 |
| Y1_vs_Y2 | gene | 95 | 0 | 0 | 0 | 0 | C_Y组内跨水平 |
| Y1_vs_Y2 | joint | 96 | 2 | 0 | 1 | 0.01239 | C_Y组内跨水平 |
| Y1_vs_Y2 | met | 95 | 2 | 0 | 1 | 0.03454 | C_Y组内跨水平 |
| Y1_vs_Y3 | gene | 95 | 2 | 0 | 1 | 0.005368 | C_Y组内跨水平 |
| Y1_vs_Y3 | joint | 96 | 14 | 1 | 9 | 0.04842 | C_Y组内跨水平 |
| Y1_vs_Y3 | met | 95 | 13 | 0 | 6 | 0.1658 | C_Y组内跨水平 |
| Y1_vs_Y4 | gene | 95 | 73 | 0 | 56 | 1 | C_Y组内跨水平 |
| Y1_vs_Y4 | joint | 96 | 77 | 0 | 74 | 0.2295 | C_Y组内跨水平 |
| Y1_vs_Y4 | met | 95 | 32 | 0 | 13 | 0.3253 | C_Y组内跨水平 |
| Y1_vs_Y5 | gene | 95 | 73 | 2 | 58 | 1 | C_Y组内跨水平 |
| Y1_vs_Y5 | joint | 96 | 75 | 0 | 75 | 0.2639 | C_Y组内跨水平 |
| Y1_vs_Y5 | met | 95 | 22 | 0 | 16 | 0.1212 | C_Y组内跨水平 |
| Y2_vs_Y3 | gene | 95 | 0 | 0 | 0 | 0 | C_Y组内跨水平 |
| Y2_vs_Y3 | joint | 96 | 1 | 0 | 1 | 0.01121 | C_Y组内跨水平 |
| Y2_vs_Y3 | met | 95 | 1 | 0 | 1 | 0.00546 | C_Y组内跨水平 |
| Y2_vs_Y4 | gene | 95 | 66 | 0 | 49 | 1 | C_Y组内跨水平 |
| Y2_vs_Y4 | joint | 96 | 70 | 0 | 69 | 0.2295 | C_Y组内跨水平 |
| Y2_vs_Y4 | met | 95 | 20 | 0 | 12 | 0.3021 | C_Y组内跨水平 |
| Y2_vs_Y5 | gene | 95 | 76 | 0 | 57 | 1 | C_Y组内跨水平 |
| Y2_vs_Y5 | joint | 96 | 76 | 0 | 75 | 0.2398 | C_Y组内跨水平 |
| Y2_vs_Y5 | met | 95 | 10 | 0 | 7 | 0.06323 | C_Y组内跨水平 |
| Y3_vs_Y4 | gene | 95 | 63 | 0 | 38 | 1 | C_Y组内跨水平 |
| Y3_vs_Y4 | joint | 96 | 70 | 0 | 63 | 0.2309 | C_Y组内跨水平 |
| Y3_vs_Y4 | met | 95 | 28 | 0 | 12 | 0.3253 | C_Y组内跨水平 |
| Y3_vs_Y5 | gene | 95 | 76 | 1 | 60 | 1 | C_Y组内跨水平 |
| Y3_vs_Y5 | joint | 96 | 77 | 0 | 76 | 0.3459 | C_Y组内跨水平 |
| Y3_vs_Y5 | met | 95 | 20 | 0 | 14 | 0.08219 | C_Y组内跨水平 |
| Y4_vs_Y5 | gene | 95 | 72 | 0 | 60 | 0.4469 | C_Y组内跨水平 |
| Y4_vs_Y5 | joint | 96 | 74 | 0 | 72 | 0.1651 | C_Y组内跨水平 |
| Y4_vs_Y5 | met | 95 | 6 | 0 | 3 | 0.05958 | C_Y组内跨水平 |
表注:pid、name 通路;layer 网络层;n_nodes、n_edges 节点数和边数;sum_betweenness 相对介数中心性之和;analyzable 影响值是否可计算(节点数达到下限且存在中介节点)。
| pid | name | layer | n_nodes | n_edges | sum_betweenness | analyzable |
|---|---|---|---|---|---|---|
| 00010 | Glycolysis / Gluconeogenesis | met | 30 | 60 | 3.026 | 是 |
| 00010 | Glycolysis / Gluconeogenesis | gene | 109 | 1317 | 2.064 | 是 |
| 00010 | Glycolysis / Gluconeogenesis | joint | 139 | 398 | 4.748 | 是 |
| 00020 | Citrate cycle (TCA cycle) | met | 19 | 43 | 2.536 | 是 |
| 00020 | Citrate cycle (TCA cycle) | gene | 70 | 918 | 1.314 | 是 |
| 00020 | Citrate cycle (TCA cycle) | joint | 89 | 290 | 3.808 | 是 |
| 00030 | Pentose phosphate pathway | met | 37 | 81 | 2.064 | 是 |
| 00030 | Pentose phosphate pathway | gene | 95 | 838 | 1.221 | 是 |
| 00030 | Pentose phosphate pathway | joint | 132 | 329 | 3.116 | 是 |
| 00040 | Pentose and glucuronate interconversions | met | 59 | 115 | 3.452 | 是 |
| 00040 | Pentose and glucuronate interconversions | gene | 97 | 463 | 3.015 | 是 |
| 00040 | Pentose and glucuronate interconversions | joint | 156 | 334 | 6.618 | 是 |
| 00051 | Fructose and mannose metabolism | met | 54 | 90 | 1.385 | 是 |
| 00051 | Fructose and mannose metabolism | gene | 124 | 930 | 1.449 | 是 |
| 00051 | Fructose and mannose metabolism | joint | 178 | 369 | 2.997 | 是 |
| 00052 | Galactose metabolism | met | 48 | 83 | 3.066 | 是 |
| 00052 | Galactose metabolism | gene | 87 | 471 | 2.771 | 是 |
| 00052 | Galactose metabolism | joint | 135 | 329 | 5.958 | 是 |
| 00053 | Ascorbate and aldarate metabolism | met | 51 | 82 | 0.7988 | 是 |
| 00053 | Ascorbate and aldarate metabolism | gene | 63 | 150 | 0.5695 | 是 |
| 00053 | Ascorbate and aldarate metabolism | joint | 114 | 197 | 1.511 | 是 |
| 00061 | Fatty acid biosynthesis | met | 56 | 93 | 3.536 | 是 |
| 00061 | Fatty acid biosynthesis | gene | 39 | 373 | 0.3812 | 是 |
| 00061 | Fatty acid biosynthesis | joint | 95 | 738 | 1.193 | 是 |
| 00062 | Fatty acid elongation | met | 37 | 50 | 2.107 | 是 |
| 00062 | Fatty acid elongation | gene | 25 | 42 | 0.9601 | 是 |
| 00062 | Fatty acid elongation | joint | 62 | 177 | 1.153 | 是 |
| 00071 | Fatty acid degradation | met | 45 | 71 | 2.386 | 是 |
| 00071 | Fatty acid degradation | gene | 60 | 422 | 0.2767 | 是 |
| 00071 | Fatty acid degradation | joint | 105 | 680 | 0.9151 | 是 |
| 00073 | Cutin, suberine and wax biosynthesis | met | 20 | 17 | 0.03801 | 是 |
| 00073 | Cutin, suberine and wax biosynthesis | gene | 20 | 28 | 0.02632 | 是 |
| 00073 | Cutin, suberine and wax biosynthesis | joint | 40 | 64 | 0.1808 | 是 |
| 00100 | Steroid biosynthesis | met | 56 | 60 | 0.9684 | 是 |
| 00100 | Steroid biosynthesis | gene | 34 | 68 | 1.034 | 是 |
| 00100 | Steroid biosynthesis | joint | 90 | 137 | 2.395 | 是 |
| 00130 | Ubiquinone and other terpenoid-quinone biosynthesis | met | 68 | 72 | 0.1936 | 是 |
| 00130 | Ubiquinone and other terpenoid-quinone biosynthesis | gene | 64 | 147 | 0.5709 | 是 |
| 00130 | Ubiquinone and other terpenoid-quinone biosynthesis | joint | 132 | 208 | 1.086 | 是 |
| 00220 | Arginine biosynthesis | met | 22 | 29 | 1.345 | 是 |
| 00220 | Arginine biosynthesis | gene | 66 | 367 | 0.8712 | 是 |
| 00220 | Arginine biosynthesis | joint | 88 | 158 | 2.299 | 是 |
| 00230 | Purine metabolism | met | 77 | 116 | 1.57 | 是 |
| 00230 | Purine metabolism | gene | 219 | 2056 | 1.092 | 是 |
| 00230 | Purine metabolism | joint | 296 | 754 | 2.819 | 是 |
| 00232 | Caffeine metabolism | met | 18 | 21 | 0.2794 | 是 |
| 00232 | Caffeine metabolism | gene | 16 | 36 | 0.2905 | 是 |
| 00232 | Caffeine metabolism | joint | 34 | 55 | 0.8532 | 是 |
| 00240 | Pyrimidine metabolism | met | 59 | 88 | 0.6319 | 是 |
| 00240 | Pyrimidine metabolism | gene | 109 | 1137 | 0.7799 | 是 |
| 00240 | Pyrimidine metabolism | joint | 168 | 484 | 1.912 | 是 |
| 00250 | Alanine, aspartate and glutamate metabolism | met | 27 | 38 | 0.3523 | 是 |
| 00250 | Alanine, aspartate and glutamate metabolism | gene | 70 | 442 | 0.9695 | 是 |
| 00250 | Alanine, aspartate and glutamate metabolism | joint | 97 | 198 | 2.465 | 是 |
| 00260 | Glycine, serine and threonine metabolism | met | 48 | 82 | 1.887 | 是 |
| 00260 | Glycine, serine and threonine metabolism | gene | 114 | 881 | 1.757 | 是 |
| 00260 | Glycine, serine and threonine metabolism | joint | 162 | 337 | 4.026 | 是 |
| 00261 | Monobactam biosynthesis | met | 29 | 26 | 0.1336 | 是 |
| 00261 | Monobactam biosynthesis | gene | 27 | 18 | 0.08923 | 是 |
| 00261 | Monobactam biosynthesis | joint | 56 | 67 | 0.3084 | 是 |
| 00270 | Cysteine and methionine metabolism | met | 64 | 101 | 2.15 | 是 |
| 00270 | Cysteine and methionine metabolism | gene | 131 | 894 | 2.036 | 是 |
| 00270 | Cysteine and methionine metabolism | joint | 195 | 439 | 4.522 | 是 |
| 00280 | Valine, leucine and isoleucine degradation | met | 39 | 64 | 1.557 | 是 |
| 00280 | Valine, leucine and isoleucine degradation | gene | 71 | 340 | 0.8128 | 是 |
| 00280 | Valine, leucine and isoleucine degradation | joint | 110 | 305 | 2.342 | 是 |
| 00290 | Valine, leucine and isoleucine biosynthesis | met | 22 | 30 | 0.5357 | 是 |
| 00290 | Valine, leucine and isoleucine biosynthesis | gene | 19 | 64 | 2.092 | 是 |
| 00290 | Valine, leucine and isoleucine biosynthesis | joint | 41 | 102 | 4.695 | 是 |
| 00300 | Lysine biosynthesis | met | 33 | 48 | 1.138 | 是 |
| 00300 | Lysine biosynthesis | gene | 48 | 134 | 0.9681 | 是 |
| 00300 | Lysine biosynthesis | joint | 81 | 157 | 2.309 | 是 |
| 00310 | Lysine degradation | met | 51 | 66 | 0.3882 | 是 |
| 00310 | Lysine degradation | gene | 99 | 1100 | 0.1978 | 是 |
| 00310 | Lysine degradation | joint | 150 | 352 | 0.6244 | 是 |
| 00330 | Arginine and proline metabolism | met | 69 | 97 | 0.7452 | 是 |
| 00330 | Arginine and proline metabolism | gene | 114 | 546 | 2.587 | 是 |
| 00330 | Arginine and proline metabolism | joint | 183 | 313 | 5.629 | 是 |
| 00340 | Histidine metabolism | met | 35 | 40 | 1.41 | 是 |
| 00340 | Histidine metabolism | gene | 50 | 111 | 1.105 | 是 |
| 00340 | Histidine metabolism | joint | 85 | 130 | 2.28 | 是 |
| 00350 | Tyrosine metabolism | met | 61 | 79 | 0.424 | 是 |
| 00350 | Tyrosine metabolism | gene | 85 | 629 | 0.6364 | 是 |
| 00350 | Tyrosine metabolism | joint | 146 | 311 | 1.519 | 是 |
| 00360 | Phenylalanine metabolism | met | 43 | 55 | 0.6893 | 是 |
| 00360 | Phenylalanine metabolism | gene | 75 | 575 | 0.6464 | 是 |
| 00360 | Phenylalanine metabolism | joint | 118 | 232 | 1.567 | 是 |
| 00380 | Tryptophan metabolism | met | 52 | 56 | 0.1482 | 是 |
| 00380 | Tryptophan metabolism | gene | 76 | 236 | 0.5694 | 是 |
| 00380 | Tryptophan metabolism | joint | 128 | 211 | 1.385 | 是 |
| 00400 | Phenylalanine, tyrosine and tryptophan biosynthesis | met | 34 | 51 | 2.398 | 是 |
| 00400 | Phenylalanine, tyrosine and tryptophan biosynthesis | gene | 74 | 833 | 1.071 | 是 |
| 00400 | Phenylalanine, tyrosine and tryptophan biosynthesis | joint | 108 | 368 | 2.565 | 是 |
| 00402 | Benzoxazinoid biosynthesis | met | 9 | 8 | 1.5 | 是 |
| 00402 | Benzoxazinoid biosynthesis | gene | 8 | 7 | 1.333 | 是 |
| 00402 | Benzoxazinoid biosynthesis | joint | 17 | 16 | 2.833 | 是 |
| 00410 | beta-Alanine metabolism | met | 24 | 35 | 1.194 | 是 |
| 00410 | beta-Alanine metabolism | gene | 46 | 315 | 1.122 | 是 |
| 00410 | beta-Alanine metabolism | joint | 70 | 154 | 2.714 | 是 |
| 00430 | Taurine and hypotaurine metabolism | met | 21 | 30 | 0.9842 | 是 |
| 00430 | Taurine and hypotaurine metabolism | gene | 29 | 84 | 0.6839 | 是 |
| 00430 | Taurine and hypotaurine metabolism | joint | 50 | 78 | 1.903 | 是 |
| 00440 | Phosphonate and phosphinate metabolism | met | 45 | 44 | 0.2807 | 是 |
| 00440 | Phosphonate and phosphinate metabolism | gene | 48 | 70 | 0.2414 | 是 |
| 00440 | Phosphonate and phosphinate metabolism | joint | 93 | 114 | 0.647 | 是 |
| 00450 | Selenocompound metabolism | met | 21 | 22 | 0.09737 | 是 |
| 00450 | Selenocompound metabolism | gene | 36 | 56 | 0.07227 | 是 |
| 00450 | Selenocompound metabolism | joint | 57 | 88 | 0.2744 | 是 |
| 00460 | Cyanoamino acid metabolism | met | 44 | 45 | 0.2763 | 是 |
| 00460 | Cyanoamino acid metabolism | gene | 37 | 102 | 0.504 | 是 |
| 00460 | Cyanoamino acid metabolism | joint | 81 | 142 | 1.083 | 是 |
| 00470 | D-Amino acid metabolism | met | 60 | 74 | 0.05815 | 是 |
| 00470 | D-Amino acid metabolism | gene | 56 | 162 | 0.564 | 是 |
| 00470 | D-Amino acid metabolism | joint | 116 | 232 | 1.378 | 是 |
| 00480 | Glutathione metabolism | met | 35 | 50 | 1.007 | 是 |
| 00480 | Glutathione metabolism | gene | 55 | 419 | 1.176 | 是 |
| 00480 | Glutathione metabolism | joint | 90 | 209 | 2.804 | 是 |
| 00500 | Starch and sucrose metabolism | met | 35 | 85 | 2.368 | 是 |
| 00500 | Starch and sucrose metabolism | gene | 109 | 936 | 2.218 | 是 |
| 00500 | Starch and sucrose metabolism | joint | 144 | 331 | 5.155 | 是 |
| 00510 | N-Glycan biosynthesis | met | 10 | 9 | 0.5139 | 是 |
| 00510 | N-Glycan biosynthesis | gene | 21 | 25 | 0.2 | 是 |
| 00510 | N-Glycan biosynthesis | joint | 31 | 46 | 0.7138 | 是 |
| 00520 | Amino sugar and nucleotide sugar metabolism | met | 72 | 107 | 1.447 | 是 |
| 00520 | Amino sugar and nucleotide sugar metabolism | gene | 119 | 625 | 1.774 | 是 |
| 00520 | Amino sugar and nucleotide sugar metabolism | joint | 191 | 393 | 3.766 | 是 |
| 00531 | Glycosaminoglycan degradation | met | 1 | 0 | 0 | 否 |
| 00531 | Glycosaminoglycan degradation | gene | 2 | 0 | 0 | 否 |
| 00531 | Glycosaminoglycan degradation | joint | 3 | 4 | 1 | 是 |
| 00540 | Lipopolysaccharide biosynthesis | met | 42 | 51 | 0.5726 | 是 |
| 00540 | Lipopolysaccharide biosynthesis | gene | 26 | 38 | 1.213 | 是 |
| 00540 | Lipopolysaccharide biosynthesis | joint | 68 | 86 | 2.196 | 是 |
| 00541 | Biosynthesis of various nucleotide sugars | met | 121 | 134 | 0.06681 | 是 |
| 00541 | Biosynthesis of various nucleotide sugars | gene | 135 | 283 | 0.1374 | 是 |
| 00541 | Biosynthesis of various nucleotide sugars | joint | 256 | 350 | 0.3299 | 是 |
| 00561 | Glycerolipid metabolism | met | 32 | 47 | 1.004 | 是 |
| 00561 | Glycerolipid metabolism | gene | 101 | 1354 | 1.205 | 是 |
| 00561 | Glycerolipid metabolism | joint | 133 | 307 | 2.767 | 是 |
| 00562 | Inositol phosphate metabolism | met | 47 | 70 | 2.278 | 是 |
| 00562 | Inositol phosphate metabolism | gene | 79 | 371 | 2.299 | 是 |
| 00562 | Inositol phosphate metabolism | joint | 126 | 227 | 5.151 | 是 |
| 00563 | Glycosylphosphatidylinositol (GPI)-anchor biosynthesis | met | 16 | 12 | 0.07143 | 是 |
| 00563 | Glycosylphosphatidylinositol (GPI)-anchor biosynthesis | gene | 18 | 8 | 0.01471 | 是 |
| 00563 | Glycosylphosphatidylinositol (GPI)-anchor biosynthesis | joint | 34 | 32 | 0.1723 | 是 |
| 00564 | Glycerophospholipid metabolism | met | 52 | 84 | 2.373 | 是 |
| 00564 | Glycerophospholipid metabolism | gene | 120 | 1016 | 2.228 | 是 |
| 00564 | Glycerophospholipid metabolism | joint | 172 | 407 | 4.94 | 是 |
| 00565 | Ether lipid metabolism | met | 21 | 22 | 0.2 | 是 |
| 00565 | Ether lipid metabolism | gene | 31 | 148 | 0.4897 | 是 |
| 00565 | Ether lipid metabolism | joint | 52 | 94 | 1.209 | 是 |
| 00566 | Sulfoquinovose metabolism | met | 39 | 49 | 1.01 | 是 |
| 00566 | Sulfoquinovose metabolism | gene | 50 | 93 | 0.8516 | 是 |
| 00566 | Sulfoquinovose metabolism | joint | 89 | 128 | 2.016 | 是 |
| 00590 | Arachidonic acid metabolism | met | 46 | 48 | 0.09394 | 是 |
| 00590 | Arachidonic acid metabolism | gene | 51 | 221 | 0.1135 | 是 |
| 00590 | Arachidonic acid metabolism | joint | 97 | 179 | 0.3684 | 是 |
| 00591 | Linoleic acid metabolism | met | 13 | 12 | 0.1136 | 是 |
| 00591 | Linoleic acid metabolism | gene | 25 | 128 | 0 | 否 |
| 00591 | Linoleic acid metabolism | joint | 38 | 63 | 0.277 | 是 |
| 00592 | alpha-Linolenic acid metabolism | met | 51 | 48 | 0.05918 | 是 |
| 00592 | alpha-Linolenic acid metabolism | gene | 34 | 48 | 0.2282 | 是 |
| 00592 | alpha-Linolenic acid metabolism | joint | 85 | 104 | 0.393 | 是 |
| 00600 | Sphingolipid metabolism | met | 34 | 51 | 1.041 | 是 |
| 00600 | Sphingolipid metabolism | gene | 56 | 400 | 1.466 | 是 |
| 00600 | Sphingolipid metabolism | joint | 90 | 188 | 3.46 | 是 |
| 00620 | Pyruvate metabolism | met | 28 | 55 | 0.7179 | 是 |
| 00620 | Pyruvate metabolism | gene | 141 | 2404 | 0.5977 | 是 |
| 00620 | Pyruvate metabolism | joint | 169 | 403 | 1.625 | 是 |
| 00630 | Glyoxylate and dicarboxylate metabolism | met | 55 | 88 | 2.091 | 是 |
| 00630 | Glyoxylate and dicarboxylate metabolism | gene | 120 | 859 | 0.9992 | 是 |
| 00630 | Glyoxylate and dicarboxylate metabolism | joint | 175 | 343 | 2.827 | 是 |
| 00640 | Propanoate metabolism | met | 37 | 69 | 2.188 | 是 |
| 00640 | Propanoate metabolism | gene | 102 | 1199 | 1.515 | 是 |
| 00640 | Propanoate metabolism | joint | 139 | 339 | 3.953 | 是 |
| 00650 | Butanoate metabolism | met | 43 | 76 | 1.382 | 是 |
| 00650 | Butanoate metabolism | gene | 115 | 820 | 1.45 | 是 |
| 00650 | Butanoate metabolism | joint | 158 | 387 | 3.122 | 是 |
| 00660 | C5-Branched dibasic acid metabolism | met | 22 | 30 | 0.5167 | 是 |
| 00660 | C5-Branched dibasic acid metabolism | gene | 30 | 95 | 0.4433 | 是 |
| 00660 | C5-Branched dibasic acid metabolism | joint | 52 | 106 | 1.05 | 是 |
| 00670 | One carbon pool by folate | met | 25 | 65 | 1.46 | 是 |
| 00670 | One carbon pool by folate | gene | 65 | 1460 | 0.755 | 是 |
| 00670 | One carbon pool by folate | joint | 90 | 275 | 2.474 | 是 |
| 00710 | Carbon fixation by Calvin cycle | met | 19 | 34 | 1.467 | 是 |
| 00710 | Carbon fixation by Calvin cycle | gene | 37 | 124 | 1.178 | 是 |
| 00710 | Carbon fixation by Calvin cycle | joint | 56 | 105 | 2.811 | 是 |
| 00730 | Thiamine metabolism | met | 28 | 33 | 1.262 | 是 |
| 00730 | Thiamine metabolism | gene | 36 | 170 | 0.9118 | 是 |
| 00730 | Thiamine metabolism | joint | 64 | 113 | 2.236 | 是 |
| 00740 | Riboflavin metabolism | met | 18 | 17 | 0.2978 | 是 |
| 00740 | Riboflavin metabolism | gene | 53 | 212 | 0.1802 | 是 |
| 00740 | Riboflavin metabolism | joint | 71 | 103 | 0.7029 | 是 |
| 00750 | Vitamin B6 metabolism | met | 23 | 33 | 0.8571 | 是 |
| 00750 | Vitamin B6 metabolism | gene | 26 | 114 | 0.5683 | 是 |
| 00750 | Vitamin B6 metabolism | joint | 49 | 98 | 1.585 | 是 |
| 00760 | Nicotinate and nicotinamide metabolism | met | 51 | 57 | 0.2522 | 是 |
| 00760 | Nicotinate and nicotinamide metabolism | gene | 97 | 618 | 0.3735 | 是 |
| 00760 | Nicotinate and nicotinamide metabolism | joint | 148 | 260 | 0.9098 | 是 |
| 00770 | Pantothenate and CoA biosynthesis | met | 26 | 32 | 0.605 | 是 |
| 00770 | Pantothenate and CoA biosynthesis | gene | 47 | 153 | 0.6541 | 是 |
| 00770 | Pantothenate and CoA biosynthesis | joint | 73 | 142 | 1.421 | 是 |
| 00780 | Biotin metabolism | met | 24 | 26 | 1.494 | 是 |
| 00780 | Biotin metabolism | gene | 24 | 45 | 1.01 | 是 |
| 00780 | Biotin metabolism | joint | 48 | 71 | 2.362 | 是 |
| 00785 | Lipoic acid metabolism | met | 29 | 50 | 1.328 | 是 |
| 00785 | Lipoic acid metabolism | gene | 25 | 121 | 0.7627 | 是 |
| 00785 | Lipoic acid metabolism | joint | 54 | 119 | 2.017 | 是 |
| 00790 | Folate biosynthesis | met | 56 | 66 | 0.2061 | 是 |
| 00790 | Folate biosynthesis | gene | 84 | 435 | 0.2846 | 是 |
| 00790 | Folate biosynthesis | joint | 140 | 286 | 0.6811 | 是 |
| 00860 | Porphyrin metabolism | met | 116 | 129 | 0.8376 | 是 |
| 00860 | Porphyrin metabolism | gene | 140 | 450 | 0.7387 | 是 |
| 00860 | Porphyrin metabolism | joint | 256 | 393 | 1.551 | 是 |
| 00900 | Terpenoid backbone biosynthesis | met | 44 | 60 | 1.149 | 是 |
| 00900 | Terpenoid backbone biosynthesis | gene | 64 | 217 | 0.82 | 是 |
| 00900 | Terpenoid backbone biosynthesis | joint | 108 | 169 | 2.076 | 是 |
| 00901 | Indole alkaloid biosynthesis | met | 80 | 71 | 0.08423 | 是 |
| 00901 | Indole alkaloid biosynthesis | gene | 57 | 51 | 0.09188 | 是 |
| 00901 | Indole alkaloid biosynthesis | joint | 137 | 143 | 0.2139 | 是 |
| 00902 | Monoterpenoid biosynthesis | met | 48 | 48 | 0.1721 | 是 |
| 00902 | Monoterpenoid biosynthesis | gene | 44 | 40 | 0.07863 | 是 |
| 00902 | Monoterpenoid biosynthesis | joint | 92 | 112 | 0.2527 | 是 |
| 00904 | Diterpenoid biosynthesis | met | 104 | 103 | 0.2621 | 是 |
| 00904 | Diterpenoid biosynthesis | gene | 76 | 176 | 0.1207 | 是 |
| 00904 | Diterpenoid biosynthesis | joint | 180 | 257 | 0.3257 | 是 |
| 00905 | Brassinosteroid biosynthesis | met | 26 | 29 | 0.2783 | 是 |
| 00905 | Brassinosteroid biosynthesis | gene | 12 | 48 | 1.136 | 是 |
| 00905 | Brassinosteroid biosynthesis | joint | 38 | 98 | 2.251 | 是 |
| 00906 | Carotenoid biosynthesis | met | 109 | 116 | 0.4012 | 是 |
| 00906 | Carotenoid biosynthesis | gene | 61 | 210 | 0.4842 | 是 |
| 00906 | Carotenoid biosynthesis | joint | 170 | 294 | 1.062 | 是 |
| 00908 | Zeatin biosynthesis | met | 22 | 20 | 0.007143 | 是 |
| 00908 | Zeatin biosynthesis | gene | 10 | 1 | 0 | 否 |
| 00908 | Zeatin biosynthesis | joint | 32 | 34 | 0.04731 | 是 |
| 00909 | Sesquiterpenoid and triterpenoid biosynthesis | met | 84 | 84 | 0.02512 | 是 |
| 00909 | Sesquiterpenoid and triterpenoid biosynthesis | gene | 75 | 38 | 0.004813 | 是 |
| 00909 | Sesquiterpenoid and triterpenoid biosynthesis | joint | 159 | 180 | 0.04076 | 是 |
| 00910 | Nitrogen metabolism | met | 17 | 15 | 0.1083 | 是 |
| 00910 | Nitrogen metabolism | gene | 66 | 300 | 0.137 | 是 |
| 00910 | Nitrogen metabolism | joint | 83 | 113 | 0.4032 | 是 |
| 00920 | Sulfur metabolism | met | 39 | 64 | 0.6437 | 是 |
| 00920 | Sulfur metabolism | gene | 121 | 1745 | 1.054 | 是 |
| 00920 | Sulfur metabolism | joint | 160 | 345 | 2.371 | 是 |
| 00940 | Phenylpropanoid biosynthesis | met | 54 | 67 | 0.9528 | 是 |
| 00940 | Phenylpropanoid biosynthesis | gene | 31 | 75 | 0.8437 | 是 |
| 00940 | Phenylpropanoid biosynthesis | joint | 85 | 164 | 2.314 | 是 |
| 00941 | Flavonoid biosynthesis | met | 68 | 74 | 0.1621 | 是 |
| 00941 | Flavonoid biosynthesis | gene | 27 | 56 | 0.4508 | 是 |
| 00941 | Flavonoid biosynthesis | joint | 95 | 161 | 1.193 | 是 |
| 00942 | Anthocyanin biosynthesis | met | 41 | 36 | 0.04231 | 是 |
| 00942 | Anthocyanin biosynthesis | gene | 15 | 18 | 0.07692 | 是 |
| 00942 | Anthocyanin biosynthesis | joint | 56 | 78 | 0.3357 | 是 |
| 00943 | Isoflavonoid biosynthesis | met | 49 | 43 | 0.1188 | 是 |
| 00943 | Isoflavonoid biosynthesis | gene | 18 | 18 | 0.3676 | 是 |
| 00943 | Isoflavonoid biosynthesis | joint | 67 | 91 | 0.8855 | 是 |
| 00944 | Flavone and flavonol biosynthesis | met | 30 | 24 | 0.03695 | 是 |
| 00944 | Flavone and flavonol biosynthesis | gene | 15 | 15 | 0.04945 | 是 |
| 00944 | Flavone and flavonol biosynthesis | joint | 45 | 52 | 0.2119 | 是 |
| 00945 | Stilbenoid, diarylheptanoid and gingerol biosynthesis | met | 19 | 21 | 0.6176 | 是 |
| 00945 | Stilbenoid, diarylheptanoid and gingerol biosynthesis | gene | 13 | 14 | 0.2576 | 是 |
| 00945 | Stilbenoid, diarylheptanoid and gingerol biosynthesis | joint | 32 | 41 | 1.071 | 是 |
| 00950 | Isoquinoline alkaloid biosynthesis | met | 95 | 92 | 0.4244 | 是 |
| 00950 | Isoquinoline alkaloid biosynthesis | gene | 69 | 118 | 0.696 | 是 |
| 00950 | Isoquinoline alkaloid biosynthesis | joint | 164 | 224 | 1.258 | 是 |
| 00960 | Tropane, piperidine and pyridine alkaloid biosynthesis | met | 42 | 33 | 0.07805 | 是 |
| 00960 | Tropane, piperidine and pyridine alkaloid biosynthesis | gene | 40 | 48 | 0.226 | 是 |
| 00960 | Tropane, piperidine and pyridine alkaloid biosynthesis | joint | 82 | 113 | 0.3193 | 是 |
| 00966 | Glucosinolate metabolism | met | 69 | 67 | 0.4941 | 是 |
| 00966 | Glucosinolate metabolism | gene | 35 | 51 | 1.843 | 是 |
| 00966 | Glucosinolate metabolism | joint | 104 | 166 | 3.571 | 是 |
| 00970 | Aminoacyl-tRNA biosynthesis | met | 52 | 35 | 0.002745 | 是 |
| 00970 | Aminoacyl-tRNA biosynthesis | gene | 44 | 14 | 0.000554 | 是 |
| 00970 | Aminoacyl-tRNA biosynthesis | joint | 96 | 101 | 0.01512 | 是 |
| 00996 | Biosynthesis of various alkaloids | met | 27 | 19 | 0.04308 | 是 |
| 00996 | Biosynthesis of various alkaloids | gene | 14 | 8 | 0.02564 | 是 |
| 00996 | Biosynthesis of various alkaloids | joint | 41 | 37 | 0.1147 | 是 |
| 00999 | Biosynthesis of various plant secondary metabolites | met | 111 | 94 | 0.07431 | 是 |
| 00999 | Biosynthesis of various plant secondary metabolites | gene | 74 | 58 | 0.1109 | 是 |
| 00999 | Biosynthesis of various plant secondary metabolites | joint | 185 | 205 | 0.2229 | 是 |
| 01040 | Biosynthesis of unsaturated fatty acids | met | 36 | 24 | 0.009244 | 是 |
| 01040 | Biosynthesis of unsaturated fatty acids | gene | 9 | 4 | 0 | 否 |
| 01040 | Biosynthesis of unsaturated fatty acids | joint | 45 | 72 | 0.3277 | 是 |
| 01310 | Nitrogen cycle | met | 7 | 8 | 0.7333 | 是 |
| 01310 | Nitrogen cycle | gene | 39 | 225 | 0.4339 | 是 |
| 01310 | Nitrogen cycle | joint | 46 | 76 | 1.258 | 是 |
| 01320 | Sulfur cycle | met | 14 | 19 | 0.3333 | 是 |
| 01320 | Sulfur cycle | gene | 44 | 245 | 0.5975 | 是 |
| 01320 | Sulfur cycle | joint | 58 | 123 | 1.399 | 是 |
各比较结果
7 结果描述
网络规模。96 条纳入通路有 KGML 反应信息;影响值可计算的通路:代谢物网络 95 条、酶网络 92 条、联合网络 96 条。
显著通路。45 个比较累计 FDR<0.05 的“比较 × 通路”:酶网络 20 个、联合网络 11 个、代谢物网络 2 个。代谢物网络命中节点少,有命中节点的通路数中位数只有 18 条(酶网络为 81 条)。
反复出现的通路(P<0.05 的比较数)。酶网络:Phenylpropanoid biosynthesis(32 个比较)、Starch and sucrose metabolism(25 个比较)、Flavonoid biosynthesis(23 个比较);联合网络:Glycolysis / Gluconeogenesis(29 个比较)、Carbon fixation by Calvin cycle(20 个比较)、Starch and sucrose metabolism(17 个比较);代谢物网络:Flavonoid biosynthesis(9 个比较)、C5-Branched dibasic acid metabolism(6 个比较)、Biosynthesis of various alkaloids(4 个比较)。
类黄酮生物合成。酶网络上影响值最高为 0.88(R1_vs_Y1,FDR=0.008);同一通路在代谢物网络上最高为 0.16,联合网络最高为 0.44。
8 生物学意义
数据支持的观察
苯丙烷和类黄酮生物合成在酶网络上反复出现,且类黄酮合成的命中酶占据了通路网络中的关键位置(影响值接近 0.9),与联合富集、WGCNA 和关键通路排序的结论一致 [24]。糖酵解、卡尔文循环、淀粉和蔗糖代谢在联合网络上反复出现,说明碳代谢主干上的酶和中间产物同时发生变化。
需要进一步验证的假设
处理和水平可能改变了碳代谢主干和苯丙烷—类黄酮分支之间的物质分配。影响值只反映差异分子在网络中的位置,不反映通量;需要用关键酶活性、代谢物定量或同位素示踪验证。代谢物网络的命中节点很少,代谢层的拓扑结论不可靠。
9 局限性
KEGG 参考通路是多物种合并的通用图,不保证本物种中每个酶和反应都存在;物种确认后可改用物种专属通路重算。代谢物只有约三分之一有 KEGG 编号,代谢物层的命中节点很少,影响值和 P 值波动大。介数中心性只反映网络位置,不反映通量大小或限速步骤。同一 KO 下的多个基因、同一化合物下的多个代谢物被合并为一个节点,节点内方向相反的变化会被掩盖。三种网络的节点和背景不同,影响值不能跨层直接比较大小,只能看各自的排序和一致性。
参考文献
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