Procollagen Type III (PC3) ELISA Kit for Cavy

This gene encodes a member of the CHMP/Chmp family of proteins which are involved in multivesicular body sorting of proteins to the interiors of lysosomes. The initial prediction of the protein sequence encoded by this gene suggested that the encoded protein was a metallopeptidase. The nomenclature has been updated recently to reflect the correct biological function of this encoded protein. Several transcripts encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

CHMP1A: 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 to the midbody of dividing cells. May also be involved in chromosome condensation. Targets the Polycomb group (PcG) protein BMI1/PCGF4 to regions of condensed chromatin. May play a role in stable cell cycle progression and in PcG gene silencing. Belongs to the SNF7 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Cell cycle regulation; Protease

Chromosomal Location of Human Ortholog: 16q24.3

Cellular Component: nuclear matrix; condensed nuclear chromosome; early endosome; endomembrane system; microtubule organizing center

Molecular Function: protein domain specific binding; protein binding; protein homodimerization activity; metallopeptidase activity; zinc ion binding

Biological Process: vesicle-mediated transport; protein transport; transcription, DNA-dependent; cell separation during cytokinesis; negative regulation of transcription by glucose; mitotic chromosome condensation; vacuolar transport; cytokinesis; gene silencing; negative regulation of transcription, DNA-dependent; proteolysis; mitotic metaphase plate congression; nuclear organization and biogenesis

Disease: Pontocerebellar Hypoplasia, Type 8