VPS4B — Vacuolar protein sorting 4 homolog B
VPS4B belongs to a gene co-expression module in 1 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
VPS4B's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Innate lymphoid cells | Endosomal Trafficking Protein processing & ER | ARL14EP, CCDC90B, CLINT1, ESF1, MDFIC, MDM4, MPHOSPH8, NRIP1 +11 more | View in SCUBA |
About the gene
| Synonyms | SKD1, SKD1B, VPS4-2 |
|---|---|
| Chromosome | 18: 63389190-63422483 |
| Predicted location | Intracellular |
| Essential gene | No |
| Protein class | Enzymes, Plasma proteins, Predicted intracellular proteins |
| Molecular function | Hydrolase |
| Biological process | Cell cycle, Cell division, Protein transport, Transport |
Function
Involved in late steps of the endosomal multivesicular bodies (MVB) pathway. Recognizes membrane-associated ESCRT-III assemblies and catalyzes their ATP-dependent disassembly, possibly in combination with membrane fission. Redistributes the ESCRT-III components to the cytoplasm for further rounds of MVB sorting. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. VPS4A/B are required for the exosomal release of SDCBP, CD63 and syndecan. (Microbial infection) In conjunction with the ESCRT machinery also appears to function in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis and enveloped virus budding (HIV-1 and other lentiviruses).
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.