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Overview

Uniprot IDP31994
Protein NameLow affinity immunoglobulin gamma Fc region receptor II-b
Gene NameFCGR2B
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
170 VTFFQNGKSKKFSRS

Function

Receptor for the Fc region of complexed or aggregated immunoglobulins gamma. Low affinity receptor. Involved in a variety of effector and regulatory functions such as phagocytosis of immune complexes and modulation of antibody production by B-cells. Binding to this receptor results in down-modulation of previous state of cell activation triggered via antigen receptors on B-cells (BCR), T-cells (TCR) or via another Fc receptor. Isoform IIB1 fails to mediate endocytosis or phagocytosis. Isoform IIB2 does not trigger phagocytosis

Protein Sequence

10 MGILSFLPVL 20 ATESDWADCK 30 SPQPWGHMLL 40 WTAVLFLAPV 50 AGTPAAPPKA 60 VLKLEPQWIN 70 VLQEDSVTLT 80 CRGTHSPESD 90 SIQWFHNGNL 100 IPTHTQPSYR 110 FKANNNDSGE 120 YTCQTGQTSL 130 SDPVHLTVLS 140 EWLVLQTPHL 150 EFQEGETIVL 160 RCHSWKDKPL 170 VKVTFFQNGK 180 SKKFSRSDPN 190 FSIPQANHSH 200 SGDYHCTGNI 210 GYTLYSSKPV 220 TITVQAPSSS 230 PMGIIVAVVT 240 GIAVAAIVAA 250 VVALIYCRKK 260 RISALPGYPE 270 CREMGETLPE 280 KPANPTNPDE 290 ADKVGAENTI 300 TYSLLMHPDA 310 LEEPDDQNRI

Gene Ontology

Classification GO ID Description
Biological Process GO:1902950 regulation of dendritic spine maintenance
Cellular Component GO:0044297 cell body
Cellular Component GO:0043197 dendritic spine
Cellular Component GO:0009897 external side of plasma membrane
Cellular Component GO:0005886 plasma membrane
Molecular Function GO:0001540 amyloid-beta binding
Molecular Function GO:0019864 IgG binding
Molecular Function GO:0019770 IgG receptor activity
Molecular Function GO:0019772 low-affinity IgG receptor activity
Molecular Function GO:0044877 protein-containing complex binding
Biological Process GO:0001788 antibody-dependent cellular cytotoxicity
Biological Process GO:0019886 antigen processing and presentation of exogenous peptide antigen via MHC class II
Biological Process GO:0007166 cell surface receptor signaling pathway
Biological Process GO:1904646 cellular response to amyloid-beta
Biological Process GO:0006952 defense response
Biological Process GO:0038094 Fc-gamma receptor signaling pathway
Biological Process GO:0002316 follicular B cell differentiation
Biological Process GO:0002266 follicular dendritic cell activation
Biological Process GO:0002436 immune complex clearance by monocytes and macrophages
Biological Process GO:0002252 immune effector process
Biological Process GO:0016064 immunoglobulin mediated immune response
Biological Process GO:0006954 inflammatory response
Biological Process GO:0002313 mature B cell differentiation involved in immune response
Biological Process GO:0002865 negative regulation of acute inflammatory response to antigenic stimulus
Biological Process GO:0001814 negative regulation of antibody-dependent cellular cytotoxicity
Biological Process GO:0050869 negative regulation of B cell activation
Biological Process GO:0030889 negative regulation of B cell proliferation
Biological Process GO:0050859 negative regulation of B cell receptor signaling pathway
Biological Process GO:0001818 negative regulation of cytokine production
Biological Process GO:0043318 negative regulation of cytotoxic T cell degranulation
Biological Process GO:0002605 negative regulation of dendritic cell antigen processing and presentation
Biological Process GO:2001199 negative regulation of dendritic cell differentiation
Biological Process GO:0002924 negative regulation of humoral immune response mediated by circulating immunoglobulin
Biological Process GO:0050777 negative regulation of immune response
Biological Process GO:0002638 negative regulation of immunoglobulin production
Biological Process GO:0032693 negative regulation of interleukin-10 production
Biological Process GO:0043031 negative regulation of macrophage activation
Biological Process GO:1902564 negative regulation of neutrophil activation
Biological Process GO:0050765 negative regulation of phagocytosis
Biological Process GO:0001811 negative regulation of type I hypersensitivity
Biological Process GO:0006909 phagocytosis
Biological Process GO:0002922 positive regulation of humoral immune response
Biological Process GO:0046330 positive regulation of JNK cascade
Biological Process GO:0050766 positive regulation of phagocytosis
Biological Process GO:1905898 positive regulation of response to endoplasmic reticulum stress
Biological Process GO:0032760 positive regulation of tumor necrosis factor production
Biological Process GO:0006898 receptor-mediated endocytosis
Biological Process GO:0002819 regulation of adaptive immune response
Biological Process GO:0002622 regulation of B cell antigen processing and presentation
Biological Process GO:1903381 regulation of endoplasmic reticulum stress-induced neuron intrinsic apoptotic signaling pathway
Biological Process GO:0090264 regulation of immune complex clearance by monocytes and macrophages
Biological Process GO:0045088 regulation of innate immune response
Biological Process GO:0009617 response to bacterium

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.