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Overview

Uniprot IDQ8WXX5
Protein NameDnaJ homolog subfamily C member 9
Gene NameDNAJC9
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
107 YWRLLFKKISLEDIQ

Function

Acts as a dual histone chaperone and heat shock co-chaperone (PubMed:33857403). As a histone chaperone, forms a co-chaperone complex with MCM2 and histone H3-H4 heterodimers; and may thereby assist MCM2 in histone H3-H4 heterodimer recognition and facilitate the assembly of histones into nucleosomes (PubMed:33857403). May also act as a histone co-chaperone together with TONSL (PubMed:33857403). May recruit histone chaperones ASF1A, NASP and SPT2 to histone H3-H4 heterodimers (PubMed:33857403). Also plays a role as co-chaperone of the HSP70 family of molecular chaperone proteins, such as HSPA1A, HSPA1B and HSPA8 (PubMed:17182002, PubMed:33857403). As a co-chaperone, may play a role in the recruitment of HSP70-type molecular chaperone machinery to histone H3-H4 substrates, thereby maintaining the histone structural integrity (PubMed:33857403). Exhibits activity to assemble histones onto DNA in vitro (PubMed:33857403)

Protein Sequence

10 MGLLDLCEEV 20 FGTADLYRVL 30 GVRREASDGE 40 VRRGYHKVSL 50 QVHPDRVGEG 60 DKEDATRRFQ 70 ILGKVYSVLS 80 DREQRAVYDE 90 QGTVDEDSPV 100 LTQDRDWEAY 110 WRLLFKKISL 120 EDIQAFEKTY 130 KGSEEELADI 140 KQAYLDFKGD 150 MDQIMESVLC 160 VQYTEEPRIR 170 NIIQQAIDAG 180 EVPSYNAFVK 190 ESKQKMNARK 200 RRAQEEAKEA 210 EMSRKELGLD 220 EGVDSLKAAI 230 QSRQKDRQKE 240 MDNFLAQMEA 250 KYCKSSKGGG 260 KKSALKKEKK

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Molecular Function GO:0042393 histone binding
Molecular Function GO:0051087 protein-folding chaperone binding
Biological Process GO:0006334 nucleosome assembly
Biological Process GO:0032781 positive regulation of ATP-dependent activity
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005615 extracellular space
Cellular Component GO:0005654 nucleoplasm
Cellular Component GO:0005634 nucleus
Cellular Component GO:0005886 plasma membrane
Cellular Component GO:0101031 protein folding chaperone complex
Molecular Function GO:0031072 heat shock protein binding

Reference

[1] He C, Zhang J, Bai X, Lu C, Zhang K. Lysine lactylation-based insight to understanding the characterization of cervical cancer.. Biochim Biophys Acta Mol Basis Dis 1870(7):167356. 2024 Oct. PMID: 39025375.

[2] Wu Q, Li Z, Gong T, Zheng X, Zhou X et al.. Porphyromonas gingivalis infection induces lysine lactylation reprogramming in human umbilical vein endothelial cells.. Front Cell Infect Microbiol 16:1706727. 2026. PMID: 41696360.