Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
PDB-IHM is an integrative/hybrid modeling structure deposition and archiving system managed by wwPDB, designed for structural models of complex macromolecular assemblies. It has been unified with the PDB archive, meaning integrative structures can now receive PDB accession codes and be accessed through PDB and wwPDB. Its positioning is closer to research data infrastructure than to a general-purpose SaaS developer tool.
The system is built around the IHMCIF dictionary, a modular extension of PDBx/mmCIF used to describe multi-scale, multi-state, ensemble models, spatial restraints, external data references, and modeling workflows. The Data Harvesting System provides a web interface that helps depositors compile information on structures, restraints, starting models, protocols, references, authors, software, and external repositories, and generate compliant mmCIF files. Search supports keywords, Boolean operators, wildcards, phrases, and queries based on PDBx/mmCIF/IHM dictionary attributes. For validation, the IHM Validation software has been integrated into the deposition and data-harvesting workflows, and provides V3.0 reports, a standalone validation server, and a GitHub entry point.
The main content does not list any pricing plans. The project is funded by NSF, DOE, and NIH, and the IHMCIF dictionary is distributed for free through a public GitHub repository. In terms of ecosystem, it connects with scientific resources such as PDB, BMRB, EMDB, EMPIAR, SASBDB, ProteomeXchange, PRIDE, DOI/Zenodo, and more. At the tooling level, it provides python-ihm; IMP already supports IHMCIF, while ChimeraX and Molstar can be used for visualization.
Its strengths are a high degree of standardization, strong academic credibility, improved discoverability after integration with PDB, and the availability of validation reports and deposition guidelines. Its limitations are that its scope is highly specialized: it does not accept traditional X-ray/NMR/EM experimental structures, nor does it accept purely homology-modeled or ab initio computational models. Deposition files must comply with IHMCIF, and PDB format is not accepted, creating a learning curve for new users. The main content also does not specify a REST API, commercial SLA, or full self-hosting capabilities.
It is suitable for structural biology teams, integrative modeling researchers, IHM software developers, and research projects that need to publicly archive models and spatial restraints. Access from China is not mentioned in the main content, so its status is unknown.
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pdb-ihm.org is an United States Education provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach pdb-ihm.org directly.