Search Results

Overview

Uniprot IDP63158
Protein NameHigh mobility group protein B1
Gene NameHmgb1
OrganismMus musculus

Kla Sites from experimental identification

Position Flanking peptide
90 GETKKKFKDPNAPKR

Function

Multifunctional redox sensitive protein with various roles in different cellular compartments. In the nucleus is one of the major chromatin-associated non-histone proteins and acts as a DNA chaperone involved in replication, transcription, chromatin remodeling, V(D)J recombination, DNA repair and genome stability. Proposed to be an universal biosensor for nucleic acids. Promotes host inflammatory response to sterile and infectious signals and is involved in the coordination and integration of innate and adaptive immune responses. In the cytoplasm functions as a sensor and/or chaperone for immunogenic nucleic acids implicating the activation of TLR9-mediated immune responses, and mediates autophagy. Acts as a danger associated molecular pattern (DAMP) molecule that amplifies immune responses during tissue injury. Released to the extracellular environment can bind DNA, nucleosomes, IL-1 beta, CXCL12, AGER isoform 2/sRAGE, lipopolysaccharide (LPS) and lipoteichoic acid (LTA), and activates cells through engagement of multiple surface receptors. In the extracellular compartment fully reduced HMGB1 (released by necrosis) acts as a chemokine, disulfide HMGB1 (actively secreted) as a cytokine, and sulfonyl HMGB1 (released from apoptotic cells) promotes immunological tolerance (PubMed:23446148, PubMed:23519706, PubMed:23994764, PubMed:25048472). Has proangiogenic activity (PubMed:16365390). May be involved in platelet activation. Binds to phosphatidylserine and phosphatidylethanolamide. Bound to RAGE mediates signaling for neuronal outgrowth. May play a role in accumulation of expanded polyglutamine (polyQ) proteins (By similarity)

Protein Sequence

10 MGKGDPKKPR 20 GKMSSYAFFV 30 QTCREEHKKK 40 HPDASVNFSE 50 FSKKCSERWK 60 TMSAKEKGKF 70 EDMAKADKAR 80 YEREMKTYIP 90 PKGETKKKFK 100 DPNAPKRPPS 110 AFFLFCSEYR 120 PKIKGEHPGL 130 SIGDVAKKLG 140 EMWNNTAADD 150 KQPYEKKAAK 160 LKEKYEKDIA 170 AYRAKGKPDA 180 AKKGVVKAEK 190 SKKKKEEEDD 200 EEDEEDEEEE 210 EEEEDEDEEE DDDDE

Gene Ontology

Classification GO ID Description
Cellular Component GO:0035868 alphav-beta3 integrin-HMGB1 complex
Biological Process GO:0035767 endothelial cell chemotaxis
Biological Process GO:0001935 endothelial cell proliferation
Biological Process GO:0001654 eye development
Biological Process GO:0031507 heterochromatin formation
Biological Process GO:0050930 induction of positive chemotaxis
Biological Process GO:0006954 inflammatory response
Biological Process GO:0002437 inflammatory response to antigenic stimulus
Biological Process GO:0045087 innate immune response
Biological Process GO:0030324 lung development
Biological Process GO:0002281 macrophage activation involved in immune response
Biological Process GO:0001773 myeloid dendritic cell activation
Biological Process GO:2000426 negative regulation of apoptotic cell clearance
Biological Process GO:0043537 negative regulation of blood vessel endothelial cell migration
Biological Process GO:0043371 negative regulation of CD4-positive, alpha-beta T cell differentiation
Biological Process GO:0017055 negative regulation of RNA polymerase II transcription preinitiation complex assembly
Biological Process GO:0000122 negative regulation of transcription by RNA polymerase II
Biological Process GO:0032689 negative regulation of type II interferon production
Biological Process GO:0097350 neutrophil clearance
Biological Process GO:0002270 plasmacytoid dendritic cell activation
Biological Process GO:0042104 positive regulation of activated T cell proliferation
Biological Process GO:0043065 positive regulation of apoptotic process
Biological Process GO:0010508 positive regulation of autophagy
Biological Process GO:0043536 positive regulation of blood vessel endothelial cell migration
Biological Process GO:0030335 positive regulation of cell migration
Biological Process GO:2000343 positive regulation of chemokine (C-X-C motif) ligand 2 production
Biological Process GO:0007204 positive regulation of cytosolic calcium ion concentration
Biological Process GO:2001200 positive regulation of dendritic cell differentiation
Biological Process GO:0070374 positive regulation of ERK1 and ERK2 cascade
Biological Process GO:0045819 positive regulation of glycogen catabolic process
Biological Process GO:0045089 positive regulation of innate immune response
Biological Process GO:0032727 positive regulation of interferon-alpha production
Biological Process GO:0032728 positive regulation of interferon-beta production
Biological Process GO:0032731 positive regulation of interleukin-1 beta production
Biological Process GO:0032732 positive regulation of interleukin-1 production
Biological Process GO:0032733 positive regulation of interleukin-10 production
Biological Process GO:0032735 positive regulation of interleukin-12 production
Biological Process GO:0032755 positive regulation of interleukin-6 production
Biological Process GO:0032757 positive regulation of interleukin-8 production
Biological Process GO:0046330 positive regulation of JNK cascade
Biological Process GO:0043410 positive regulation of MAPK cascade
Biological Process GO:0002053 positive regulation of mesenchymal cell proliferation
Biological Process GO:0032425 positive regulation of mismatch repair
Biological Process GO:0045931 positive regulation of mitotic cell cycle
Biological Process GO:0071639 positive regulation of monocyte chemotactic protein-1 production
Biological Process GO:0090026 positive regulation of monocyte chemotaxis
Biological Process GO:0045639 positive regulation of myeloid cell differentiation
Biological Process GO:1901224 positive regulation of non-canonical NF-kappaB signal transduction
Biological Process GO:0001934 positive regulation of protein phosphorylation
Biological Process GO:1903672 positive regulation of sprouting angiogenesis
Biological Process GO:0034137 positive regulation of toll-like receptor 2 signaling pathway
Biological Process GO:0034145 positive regulation of toll-like receptor 4 signaling pathway
Biological Process GO:0034165 positive regulation of toll-like receptor 9 signaling pathway
Biological Process GO:0045944 positive regulation of transcription by RNA polymerase II
Biological Process GO:0032760 positive regulation of tumor necrosis factor production
Biological Process GO:1905564 positive regulation of vascular endothelial cell proliferation
Biological Process GO:0046598 positive regulation of viral entry into host cell
Biological Process GO:0090303 positive regulation of wound healing
Biological Process GO:2000819 regulation of nucleotide-excision repair
Biological Process GO:0002840 regulation of T cell mediated immune response to tumor cell
Biological Process GO:0002643 regulation of tolerance induction
Biological Process GO:0051384 response to glucocorticoid
Biological Process GO:0035711 T-helper 1 cell activation
Biological Process GO:0045063 T-helper 1 cell differentiation
Biological Process GO:0033151 V(D)J recombination
Cellular Component GO:0009986 cell surface
Cellular Component GO:0000793 condensed chromosome
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005769 early endosome
Cellular Component GO:0005783 endoplasmic reticulum
Cellular Component GO:0005793 endoplasmic reticulum-Golgi intermediate compartment
Cellular Component GO:0005576 extracellular region
Cellular Component GO:0005615 extracellular space
Cellular Component GO:0045121 membrane raft
Cellular Component GO:0043005 neuron projection
Cellular Component GO:0005654 nucleoplasm
Cellular Component GO:0005634 nucleus
Cellular Component GO:0017053 transcription repressor complex
Molecular Function GO:0008097 5S rRNA binding
Molecular Function GO:0003681 bent DNA binding
Molecular Function GO:0000405 bubble DNA binding
Molecular Function GO:0019958 C-X-C chemokine binding
Molecular Function GO:0010858 calcium-dependent protein kinase regulator activity
Molecular Function GO:0000402 crossed form four-way junction DNA binding
Molecular Function GO:0005125 cytokine activity
Molecular Function GO:0003684 damaged DNA binding
Molecular Function GO:0008301 DNA binding, bending
Molecular Function GO:0070182 DNA polymerase binding
Molecular Function GO:0140297 DNA-binding transcription factor binding
Molecular Function GO:0003690 double-stranded DNA binding
Molecular Function GO:0003725 double-stranded RNA binding
Molecular Function GO:0140656 endodeoxyribonuclease activator activity
Molecular Function GO:0000400 four-way junction DNA binding
Molecular Function GO:0051861 glycolipid binding
Molecular Function GO:0008201 heparin binding
Molecular Function GO:0005178 integrin binding
Molecular Function GO:0001530 lipopolysaccharide binding
Molecular Function GO:0016829 lyase activity
Molecular Function GO:0003676 nucleic acid binding
Molecular Function GO:0000401 open form four-way junction DNA binding
Molecular Function GO:0042277 peptide binding
Molecular Function GO:0001786 phosphatidylserine binding
Molecular Function GO:0046982 protein heterodimerization activity
Molecular Function GO:0030295 protein kinase activator activity
Molecular Function GO:0050786 RAGE receptor binding
Molecular Function GO:0048018 receptor ligand activity
Molecular Function GO:0061629 RNA polymerase II-specific DNA-binding transcription factor binding
Molecular Function GO:0003697 single-stranded DNA binding
Molecular Function GO:0003727 single-stranded RNA binding
Molecular Function GO:0097100 supercoiled DNA binding
Molecular Function GO:0000976 transcription cis-regulatory region binding
Molecular Function GO:0003713 transcription coactivator activity
Molecular Function GO:0003714 transcription corepressor activity
Biological Process GO:0002218 activation of innate immune response
Biological Process GO:0043277 apoptotic cell clearance
Biological Process GO:0006914 autophagy
Biological Process GO:0006284 base-excision repair
Biological Process GO:0098761 cellular response to interleukin-7
Biological Process GO:0071222 cellular response to lipopolysaccharide
Biological Process GO:0006325 chromatin organization
Biological Process GO:0006338 chromatin remodeling
Biological Process GO:0032392 DNA geometric change
Biological Process GO:0006302 double-strand break repair

Reference

[1] Zhuo W, Zhang M, Tan J, Gao Y, Wang Y et al.. Lysine lactylation analysis of proteins in the heart of the Kawasaki disease mouse model.. Front Cell Dev Biol 13:1550220. 2025. PMID: 40114965.

[2] Wu D, Tang Y, Li X, Xiong S, Zhang Z et al.. Characterization of protein lactylation in healthy and ischemic mouse hearts.. Front Cardiovasc Med 12:1644886. 2025. PMID: 41089239.