Source: PM19886704
Marked as 'Membrane associated protein'
Confidence: medium (present in either hRBCD or BSc_CH or PM22954596) Search PubMed for
(RBC AND this entry)

Gene names: CHMP1B , C18orf2
Protein names and data: CHM1B_HUMAN , Charged multivesicular body protein 1b , CHMP1.5; Chromatin-modifying protein 1b; CHMP1b; Vacuolar protein sorting-associated protein 46-2; Vps46-2; hVps46-2 Lenght: 199 a.a.
Mass: 22109 Da
fasta formatted sequence

Function: Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III) which is involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs. 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. The MVB pathway appears to require the sequential function of ESCRT-O, -I,-II and -III complexes. ESCRT- III proteins mostly dissociate from the invaginating membrane before the ILV is released. The ESCRT machinery also functions in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis and the budding of enveloped viruses (HIV-1 and other lentiviruses). ESCRT-III proteins are believed to mediate the necessary vesicle extrusion and/or membrane fission activities, possibly in conjunction with the AAA ATPase VPS4. Involved in cytokinesis. Involved in recruiting VPS4A and/or VPS4B and SPAST to the midbody of dividing cells. Involved in HIV-1 p6- and p9-dependent virus release.
Cellular location: Cytoplasm, cytosol. Endosome. Late endosome membrane; Peripheral membrane protein (Probable). Note=Localizes to the midbody of dividing cells, colocalizing with CEP55 and CHMP5. Localized at the periphery of the Fleming body.
Tissue specificity: Widely expressed. Expressed in pancreas, kidney, skeletal muscle, liver, lung, placenta and brain.

Database cross-references

UniProt: Q7LBR1
Ensembl: ENST00000526991
MIM: 606486
neXtProt: NX_Q7LBR1
Antibodypedia: Q7LBR1 (may not find the protein thus also not any antibody)
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