Evidence map›Paper›PMID 41230635›Full record

ArticleDatabase : the journal of biological databases and curation2025

PASS2: update of database of structure-based sequence alignments.

Revathy Menon, Soumya Nayak, Rama Rajesh, Ramanathan Sowdhamini

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Article in Database : the journal of biological databases and curation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Revathy MenonNational Centre for Biological Sciences (Tata Institute of Fundamental Research), GKVK Campus, Bellary Road, Bangalore, Karnataka 560065, India.
Soumya NayakNational Centre for Biological Sciences (Tata Institute of Fundamental Research), GKVK Campus, Bellary Road, Bangalore, Karnataka 560065, India.
Rama RajeshInstitute for Stem Cell Science and Regenerative Medicine, GKVK Campus, Bellary Road, Bangalore, Karnataka 560065, India.
Ramanathan SowdhaminiNational Centre for Biological Sciences (Tata Institute of Fundamental Research), GKVK Campus, Bellary Road, Bangalore, Karnataka 560065, India.ORCID 0000-0002-6642-2367

Funding

Bose National Fellow JBR/2021/000006Department of Biotechnology BT/PR40187/BTIS/137/9/2021Institute of Bioinformatics and Applied BiotechnologyMazumdar-Shaw Chair in Computational Biology IBAB/MSCB/182/2022NCBSScience and Engineering Research Board
6 · The paper itself

Abstract

Protein sequence alignments are evolutionary models and offer as starting points for the recognition of additional members of a homologous family and design of experiments. However, the accuracy of sequence alignments is obscured at the superfamily level due to distant relationships. Where structures of proteins are available, distantly related proteins can be aligned, guided by structural features. The Protein Alignment Organized as Structural Superfamilies (PASS2) database offers such structure-based sequence alignments for protein domains classified within superfamilies, as per the Structural Classification of Proteins extended (SCOPe) framework. The present update of PASS2 (PASS2.8) corresponds to the latest SCOPe release (version 2.08). This release comprises data for 26 690 protein domains exhibiting less than 40% sequence identity, organized into 2058 superfamilies. Several features derived from these alignments, including conserved secondary structural motifs, hidden Markov models (HMMs), conserved residues, and interactions across superfamilies, are also provided. For superfamilies containing divergent members, a k-means clustering algorithm has been employed to identify outliers and partition domains into split superfamilies. Novel features in this update include topological diagrams of the domains, potential interactors for each domain, and an updated methodology for identifying conserved interactions across superfamilies. This version of the database can be reached from http://caps.ncbs.res.in/pass2.

Indexed as

Databases, ProteinProteinsSequence AlignmentAlgorithmsAmino Acid SequenceProteins

Identifiers

PMID41230635
PMCPMC12612674

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