CHMP2B

Charged multivesicular body protein 2b is a protein that in humans is encoded by the CHMP2B gene. It forms part of one of the endosomal sorting complexes required for transport (ESCRT) - specifically ESCRT-III - which are a series of complexes involved in cell membrane remodelling. CHMP2B forms long chains that spiral around the neck of a budding vesicle. Along with the other components of ESCRT-III, CHMP2B constricts the neck of the vesicle just before it is cleaved away from the membrane.

CHMP2B
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 2JQK
Identifiers
Aliases	CHMP2B, ALS17, CHMP2.5, DMT1, VPS2-2, VPS2B, charged multivesicular body protein 2B, FTDALS7
External IDs	OMIM: 609512; MGI: 1916192; HomoloGene: 8534; GeneCards: CHMP2B; OMA:CHMP2B - orthologs
Gene location (Human) Chr. Chromosome 3 (human) Band 3p11.2 Start 87,227,271 bp End 87,255,556 bp
Gene location (Mouse) Chr. Chromosome 16 (mouse) Band 16|16 C1.3 Start 65,336,014 bp End 65,359,612 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in internal globus pallidus amniotic fluid mucosa of sigmoid colon jejunal mucosa palpebral conjunctiva Pons oocyte secondary oocyte subthalamic nucleus germinal epithelium Top expressed in spermatocyte lobe of prostate otolith organ utricle jejunum gastrula spermatid migratory enteric neural crest cell decidua left colon More reference expression data BioGPS More reference expression data
Gene ontology Molecular function protein domain specific binding protein binding cadherin binding Cellular component cytoplasm ESCRT III complex cytosol endosome late endosome late endosome membrane membrane plasma membrane intracellular anatomical structure lysosome extracellular exosome multivesicular body postsynaptic density glutamatergic synapse Biological process regulation of centrosome duplication cognition nucleus organization viral life cycle neuron cellular homeostasis multivesicular body assembly regulation of mitotic spindle assembly endosome organization autophagy endosomal transport protein transport septum digestion after cytokinesis mitotic metaphase plate congression vacuolar transport ESCRT III complex disassembly macroautophagy multivesicular body-lysosome fusion transport viral budding via host ESCRT complex endosome transport via multivesicular body sorting pathway late endosome to vacuole transport midbody abscission regulation of modification of postsynaptic structure regulation of postsynapse organization Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 25978 68942 Ensembl ENSG00000083937 ENSMUSG00000004843 UniProt Q9UQN3 Q8BJF9 RefSeq (mRNA) NM_001244644 NM_014043 NM_026879 RefSeq (protein) NP_001231573 NP_054762 NP_081155 Location (UCSC) Chr 3: 87.23 – 87.26 Mb Chr 16: 65.34 – 65.36 Mb PubMed search
Wikidata
View/Edit Human View/Edit Mouse

Mutations of this gene cause chromosome 3-linked frontotemporal dementia (FTD3), which has been described in several members of one Danish family [1]. In a study of French families with several forms of frontotemporal dementia, it was found to be a relatively rare cause.

External links

• GeneReviews/NCBI/NIH/UW entry on CHMP2B-Related Frontotemporal Dementia
• Human CHMP2B genome location and CHMP2B gene details page in the UCSC Genome Browser.
• Overview of all the structural information available in the PDB for UniProt: Q9UQN3 (Charged multivesicular body protein 2b) at the PDBe-KB.

Further reading

• Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
• Brown J, Ashworth A, Gydesen S, et al. (1996). "Familial non-specific dementia maps to chromosome 3". Hum. Mol. Genet. 4 (9): 1625–8. doi:10.1093/hmg/4.9.1625. PMID 8541850.
• Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID 9373149.
• Ashworth A, Lloyd S, Brown J, et al. (1999). "Molecular genetic characterisation of frontotemporal dementia on chromosome 3". Dementia and Geriatric Cognitive Disorders. 10 (Suppl 1): 93–101. doi:10.1159/000051222. PMID 10436350. S2CID 28623562.
• Lai CH, Chou CY, Ch'ang LY, et al. (2000). "Identification of novel human genes evolutionarily conserved in Caenorhabditis elegans by comparative proteomics". Genome Res. 10 (5): 703–13. doi:10.1101/gr.10.5.703. PMC 310876. PMID 10810093.
• Wiemann S, Weil B, Wellenreuther R, et al. (2001). "Toward a catalog of human genes and proteins: sequencing and analysis of 500 novel complete protein coding human cDNAs". Genome Res. 11 (3): 422–35. doi:10.1101/gr.GR1547R. PMC 311072. PMID 11230166.
• Simpson JC, Wellenreuther R, Poustka A, et al. (2001). "Systematic subcellular localization of novel proteins identified by large-scale cDNA sequencing". EMBO Rep. 1 (3): 287–92. doi:10.1093/embo-reports/kvd058. PMC 1083732. PMID 11256614.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Strack B, Calistri A, Craig S, et al. (2003). "AIP1/ALIX is a binding partner for HIV-1 p6 and EIAV p9 functioning in virus budding". Cell. 114 (6): 689–99. doi:10.1016/S0092-8674(03)00653-6. PMID 14505569. S2CID 10733770.
• von Schwedler UK, Stuchell M, Müller B, et al. (2003). "The protein network of HIV budding". Cell. 114 (6): 701–13. doi:10.1016/S0092-8674(03)00714-1. PMID 14505570. S2CID 16894972.
• Martin-Serrano J, Yarovoy A, Perez-Caballero D, et al. (2003). "Divergent retroviral late-budding domains recruit vacuolar protein sorting factors by using alternative adaptor proteins". Proc. Natl. Acad. Sci. U.S.A. 100 (21): 12414–9. Bibcode:2003PNAS..10012414M. doi:10.1073/pnas.2133846100. PMC 218772. PMID 14519844.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Kelleher T, Ryan E, Barrett S, et al. (2005). "DMT1 genetic variability is not responsible for phenotype variability in hereditary hemochromatosis". Blood Cells Mol. Dis. 33 (1): 35–9. doi:10.1016/j.bcmd.2004.04.005. PMID 15223008.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Takeuchi K, Bjarnason I, Laftah AH, et al. (2005). "Expression of iron absorption genes in mouse large intestine". Scand. J. Gastroenterol. 40 (2): 169–77. doi:10.1080/00365520510011489. PMID 15764147. S2CID 29532707.
• Skibinski G, Parkinson NJ, Brown JM, et al. (2005). "Mutations in the endosomal ESCRTIII-complex subunit CHMP2B in frontotemporal dementia". Nat. Genet. 37 (8): 806–8. doi:10.1038/ng1609. PMID 16041373. S2CID 7064719.
• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID 16189514. S2CID 4427026.
• Cannon A, Baker M, Boeve B, et al. (2006). "CHMP2B mutations are not a common cause of frontotemporal lobar degeneration". Neurosci. Lett. 398 (1–2): 83–4. doi:10.1016/j.neulet.2005.12.056. PMID 16431024. S2CID 20423989.
• Nousiainen M, Silljé HH, Sauer G, et al. (2006). "Phosphoproteome analysis of the human mitotic spindle". Proc. Natl. Acad. Sci. U.S.A. 103 (14): 5391–6. Bibcode:2006PNAS..103.5391N. doi:10.1073/pnas.0507066103. PMC 1459365. PMID 16565220.