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Overview

Uniprot IDQ16778
Protein NameHistone H2B type 2-E
Gene NameH2BC21
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
109 LLPGELAKHAVSEGT
117 HAVSEGTKAVTKYTS
12 AKSAPAPKKGSKKAV
121 EGTKAVTKYTSSK**
16 PAPKKGSKKAVTKAQ
21 GSKKAVTKAQKKDGK
35 KKRKRSRKESYSIYV
47 IYVYKVLKQVHPDTG
6 **MPEPAKSAPAPKK
86 SRLAHYNKRSTITSR

Function

Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling

Protein Sequence

10 MPEPAKSAPA 20 PKKGSKKAVT 30 KAQKKDGKKR 40 KRSRKESYSI 50 YVYKVLKQVH 60 PDTGISSKAM 70 GIMNSFVNDI 80 FERIAGEASR 90 LAHYNKRSTI 100 TSREIQTAVR 110 LLLPGELAKH 120 AVSEGTKAVT KYTSSK

Gene Ontology

Classification GO ID Description
Cellular Component GO:0070062 extracellular exosome
Cellular Component GO:0005615 extracellular space
Cellular Component GO:0005654 nucleoplasm
Cellular Component GO:0000786 nucleosome
Cellular Component GO:0005634 nucleus
Molecular Function GO:0003677 DNA binding
Molecular Function GO:0046982 protein heterodimerization activity
Molecular Function GO:0030527 structural constituent of chromatin
Biological Process GO:0019731 antibacterial humoral response
Biological Process GO:0061844 antimicrobial humoral immune response mediated by antimicrobial peptide
Biological Process GO:0006325 chromatin organization
Biological Process GO:0050830 defense response to Gram-positive bacterium
Biological Process GO:0002227 innate immune response in mucosa
Biological Process GO:0006334 nucleosome assembly

Reference

[1] Hong H, Chen X, Wang H, Gu X, Yuan Y et al.. Global profiling of protein lysine lactylation and potential target modified protein analysis in hepatocellular carcinoma.. Proteomics 23(9):e2200432. 2023 May. PMID: 36625413.

[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] Cheng Z, Huang H, Li M, Chen Y. Proteomic analysis identifies PFKP lactylation in SW480 colon cancer cells.. iScience 27(1):108645. 2024 Jan 19. PMID: 38155775.

[4] Bao Q, Wan N, He Z, Cao J, Yuan W et al.. Subcellular Proteomic Mapping of Lysine Lactylation.. J Am Soc Mass Spectrom 35(12):3221-3232. 2024 Dec 4. PMID: 39569522.

[5] 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.

[6] Hu J, Jin Z, Gao Y, Liu Q, Yu Y et al.. Global Profiling of Lactylation Proteomics and Specific Lactylated Site Validation in Rheumatoid Arthritis Patients.. J Proteome Res 24(4):1732-1744. 2025 Apr 4. PMID: 40112136.