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Overview

Uniprot IDQ9NZZ3
Protein NameCharged multivesicular body protein 5
Gene NameCHMP5
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
11 LFGKAKPKAPPPSLT
110 KTTVDAMKLGVKEMK
7 *MNRLFGKAKPKAPP
9 NRLFGKAKPKAPPPS

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) (PubMed:14519844). 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 HIV-1 p6- and p9-dependent virus release (PubMed:14519844)

Protein Sequence

10 MNRLFGKAKP 20 KAPPPSLTDC 30 IGTVDSRAES 40 IDKKISRLDA 50 ELVKYKDQIK 60 KMREGPAKNM 70 VKQKALRVLK 80 QKRMYEQQRD 90 NLAQQSFNME 100 QANYTIQSLK 110 DTKTTVDAMK 120 LGVKEMKKAY 130 KQVKIDQIED 140 LQDQLEDMME 150 DANEIQEALS 160 RSYGTPELDE 170 DDLEAELDAL 180 GDELLADEDS 190 SYLDEAASAP 200 AIPEGVPTDT 210 KNKDGVLVDE FGLPQIPAS

Gene Ontology

Classification GO ID Description
Biological Process GO:0006900 vesicle budding from membrane
Cellular Component GO:1904930 amphisome membrane
Cellular Component GO:0000421 autophagosome membrane
Cellular Component GO:0005829 cytosol
Cellular Component GO:0000815 ESCRT III complex
Cellular Component GO:0070062 extracellular exosome
Cellular Component GO:0000776 kinetochore
Cellular Component GO:0005828 kinetochore microtubule
Cellular Component GO:0005765 lysosomal membrane
Cellular Component GO:0015630 microtubule cytoskeleton
Cellular Component GO:0030496 midbody
Cellular Component GO:0005771 multivesicular body
Cellular Component GO:0032585 multivesicular body membrane
Cellular Component GO:0005635 nuclear envelope
Cellular Component GO:0005643 nuclear pore
Cellular Component GO:0005886 plasma membrane
Molecular Function GO:0045296 cadherin binding
Biological Process GO:0097352 autophagosome maturation
Biological Process GO:0006914 autophagy
Biological Process GO:0071222 cellular response to lipopolysaccharide
Biological Process GO:0071225 cellular response to muramyl dipeptide
Biological Process GO:1904903 ESCRT III complex disassembly
Biological Process GO:1902774 late endosome to lysosome transport
Biological Process GO:0032511 late endosome to vacuole transport via multivesicular body sorting pathway
Biological Process GO:0090148 membrane fission
Biological Process GO:0061952 midbody abscission
Biological Process GO:0007080 mitotic metaphase chromosome alignment
Biological Process GO:0036258 multivesicular body assembly
Biological Process GO:0071985 multivesicular body sorting pathway
Biological Process GO:0061763 multivesicular body-lysosome fusion
Biological Process GO:0031468 nuclear membrane reassembly
Biological Process GO:0006997 nucleus organization
Biological Process GO:0001778 plasma membrane repair
Biological Process GO:0015031 protein transport
Biological Process GO:0010824 regulation of centrosome duplication
Biological Process GO:1901673 regulation of mitotic spindle assembly
Biological Process GO:0043162 ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
Biological Process GO:0051469 vesicle fusion with vacuole
Biological Process GO:0046755 viral budding
Biological Process GO:0046761 viral budding from plasma membrane
Biological Process GO:0039702 viral budding via host ESCRT complex

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.

[2] Lin Y, Chen M, Wang D, Yu Y, Chen R et al.. Multi-Proteomic Analysis Reveals the Effect of Protein Lactylation on Matrix and Cholesterol Metabolism in Tendinopathy.. J Proteome Res 22(6):1712-1722. 2023 Jun 2. PMID: 37159428.

[3] Shi CM, Wang QC, Li XL, Yang YH, Tang XY et al.. Global Profiling of Protein Lactylation in Human Hippocampi.. Proteomics Clin Appl 19(2):e202400061. 2025 Mar. PMID: 39610256.

[4] Guo X, Ren X, Yan C, Huang H. Quantitative Proteomics Reveals the Role of Lysine Lactylation in Lenalidomide-Resistance in Multiple Myeloma Cells.. ACS Chem Biol 20(7):1728-1738. 2025 Jul 18. PMID: 40590393.