跳到正文
cccskills
免费在 GitHub 公开

bioconductor-graphite

Graph objects from pathway topology derived from KEGG, Panther, PathBank, PharmGKB, Reactome SMPDB and WikiPathways databases.

中文简介正在准备中。当前显示原文说明。

查看安装方法

包含的文件(1)

  • SKILL.md5.4 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

graphite

Dependencies & Environment

Package-intrinsic requirements from the Bioconductor landing page — reproduce in any R environment.

  • Version: 1.58.0 · Bioconductor: 3.23 · R: ≥ 4.6
  • Imports: AnnotationDbi, graph, httr, rappdirs, rlang, lifecycle, purrr, dir.expiry
  • Install: BiocManager::install("graphite")

When to Use

  • Retrieving pathway topologies as directed/undirected graph objects from major databases (KEGG, Reactome, WikiPathways, Panther, PathBank, PharmGKB) using the pathways function.
  • Converting pathway identifiers (e.g., from UNIPROT to SYMBOL or ENTREZID) to match experimental data using convertIdentifiers.
  • Preparing and running topology-aware pathway enrichment analyses like SPIA (prepareSPIA, runSPIA), topologyGSA (runTopologyGSA), or clipper (runClipper).
  • Exporting pathway network structures to Cytoscape for visualization using cytoscapePlot.

When NOT to Use

  • For simple over-representation analysis (ORA) or gene set enrichment analysis (GSEA) that ignores pathway topology, use clusterProfiler or fgsea instead because they do not require graph construction.
  • For de novo gene co-expression network construction, use WGCNA instead because graphite retrieves curated, database-defined pathway topologies rather than inferring networks from data.

Data Requirements

  • Input format: Gene identifiers (e.g., Entrez IDs, Ensembl IDs, or UniProt accessions) or metabolite identifiers (e.g., CHEBI).
  • For enrichment: A vector of differentially expressed genes/metabolites with their log-fold changes (e.g., DE_Colorectal) and a background list of all genes.
  • Database versioning: Requires active internet access for initial database downloads via pathways, though pathways can be cached locally.

Key Parameters

  • species: Character; the target organism (e.g., "hsapiens", "mmusculus") used in pathways.
  • database: Character; the pathway database to query (e.g., "kegg", "reactome", "wikipathways") used in pathways.
  • which: Character; specifies whether to retrieve "proteins", "metabolites", or "mixed" networks in functions like nodes, edges, and pathwayGraph.

Best Practices

  • Always convert input gene or metabolite identifiers to match your experimental data (e.g., "SYMBOL" or "ENTREZID") using convertIdentifiers before running topological analyses.
  • Use the pathwayGraph function to convert pathway topologies into standard graphNEL objects to leverage external network visualization and graph operations.
  • When analyzing both transcriptomic and metabolomic data, use which = "mixed" to retrieve pathways containing both proteins and metabolites without edge propagation.
  • Check available databases for your species of interest using the pathwayDatabases function.

Common Pitfalls

  • Identifier mismatch: Passing gene symbols to a database structured around UNIPROT IDs will result in zero mapped nodes; fix this by translating identifiers using convertIdentifiers prior to analysis.
  • Ignoring metabolites in metabolomics: Using the default which parameter will remove metabolite nodes and propagate edges through them; fix this by setting which = "metabolites" or which = "mixed" for metabolomics data.
  • Losing edge attributes: Treating directed biological interactions as simple undirected graphs can dilute statistical power; fix this by preserving edge attributes (e.g., "Binding", "Control") visible via edgeData.

Alternatives

  • SPIA: Specifically designed for Signaling Pathway Impact Analysis, which is natively supported by graphite-derived topologies via prepareSPIA.
  • clipper: A package for topological analysis that can be used to study metabolomics data, natively integrated via runClipper.
  • topologyGSA: A package for topological gene set analysis, natively integrated via runTopologyGSA.

Citations

  • Sales G, Calura E, Romualdi C (2012). "graphite: a Bioconductor package for pathway topology alignments and network-based analyses." BMC Bioinformatics.

References

<!-- biomate-cta -->

Run this on BioMate

This skill is the knowledge layer — when, why, and how to use graphite. To run this analysis on your own data with managed compute, automated QC, and reproducible outputs, use BioMate — free to start.

▶ Open graphite on BioMate →

评价

还没有评价。欢迎分享你的使用感受。

评论

无需登录即可发表。欢迎分享使用感受、提问,或说明在哪些环境下无法运行。

还没有评论。来写第一条吧。

提交后会立即公开。请勿填写邮箱、电话等个人信息。URL 最多 2 个。

0 / 1000 字

此表单受 reCAPTCHA 保护,适用 Google 的隐私权政策和服务条款。

同一仓库的技能

The package contains functions for exploratory oligonucleotide array analysis. The dependence on tkWidgets only concerns few convenience functions. 'affy' is fully functional without it.

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

This tool uses the label-tree function from HyPhy to annotate a phylogenetic tree. It allows users to select a subset of leaves using either a regular expression or a list of sequence names, and then apply a specified label to these selecte

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

This package provides a client for the Bioconductor AnnotationHub web resource. The AnnotationHub web resource provides a central location where genomic files (e.g., VCF, bed, wig) and other resources from standard locations (e.g., UCSC, En

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

apeglm provides Bayesian shrinkage estimators for effect sizes for a variety of GLM models, using approximation of the posterior for individual coefficients.

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

ASURAT is a software for single-cell data analysis. Using ASURAT, one can simultaneously perform unsupervised clustering and biological interpretation in terms of cell type, disease, biological process, and signaling pathway activity. Inputting a single-cell RNA-seq data and knowledge-based databases, such as Cell Ontology, Gene Ontology, KEGG, etc., ASURAT transforms gene expression tables into original multivariate tables, termed sign-by-sample matrices (SSMs).

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

AUCell allows to identify cells with active gene sets (e.g. signatures, gene modules...) in single-cell RNA-seq data. AUCell uses the "Area Under the Curve" (AUC) to calculate whether a critical subset of the input gene set is enriched with

中文简介正在准备中。当前显示原文说明。

bioMate-AI/biomate-bioconductor-kb7932026年6月21日 更新

查看 bioMate-AI 的全部技能

报告此技能的问题