memVar Maps Variants Across Membrane Proteins
A new integrated database links 10,906,688 single-nucleotide variants across 7,732 membrane-associated human proteins to their membrane environments and interactions.
Updated on Nov. 5, 2026 in Life Sciences
Researchers have released memVar, an integrated database of 10,906,688 single-nucleotide variants across 7,732 human membrane-associated proteins. The resource combines variants from ClinVar, COSMIC, and gnomAD with membrane topology, lipid contacts, and functional site information.
Why it matters
Membrane proteins govern many cellular functions, and interpreting their variants requires linking clinical evidence to the membrane environments and molecular interactions that shape protein function. memVar offers a structured way to connect these layers, which may help prioritize functional experiments.
The memVar analysis draws on 10,906,688 unique variants and reports pooled odds ratios of 2.47 for transmembrane enrichment and 6.67 for protein-protein interaction site enrichment in pathogenic missense substitutions relative to benign ones. Experimentally recorded interaction loss appeared in 57.9% of pathogenic substitutions compared with 7.4% of benign substitutions, though the causal link between these patterns and disease remains to be fully established.
The details
memVar reconciles genomic, transcript, and protein coordinates to link each variant with membrane topology, bilayer depth, lipid contacts, functional sites, and partner-specific interaction interfaces. The database keeps source provenance and distinguishes clinical assertions, experimental observations, and computational predictions.
Timeline
November 5, 2026: memVar preprint published on bioRxiv.
The Big Picture
memVar extends established variant resources ClinVar, COSMIC, and gnomAD by layering membrane topology, lipid contacts, and interaction interfaces onto their records. This moves variant interpretation for membrane proteins beyond sequence-level annotation toward mechanism-oriented analysis.
For researchers studying membrane proteins, memVar provides a single resource for checking whether a variant sits in a transmembrane segment or interaction interface. The database may help narrow which variants merit experimental follow-up, such as tests of protein maturation, surface abundance, and channel activity.
The takeaway
Variant interpretation for membrane proteins improves when clinical records are read alongside membrane topology and interaction data. Researchers can use such integrated resources to focus experiments on variants most likely to disrupt function.
Further reading
Explore more research in our Life Sciences section.
More information
Explore the memVar membrane protein variation database to browse integrated variant annotations.
Source note: This article includes information reported by Biorxiv.
