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Protein

High affinity immunoglobulin gamma Fc receptor IB

Gene

FCGR1B

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at transcript leveli

Functioni

May bind to the Fc region of immunoglobulins gamma with a low affinity compared to FCGR1A. May function in the humoral immune response.2 Publications

GO - Molecular functioni

  • IgG binding Source: UniProtKB-KW
  • immunoglobulin receptor activity Source: UniProtKB

GO - Biological processi

Keywordsi

Molecular functionIgG-binding protein, Receptor
Biological processAdaptive immunity, Immunity

Enzyme and pathway databases

ReactomeiR-HSA-1236978. Cross-presentation of soluble exogenous antigens (endosomes).
R-HSA-877300. Interferon gamma signaling.

Names & Taxonomyi

Protein namesi
Recommended name:
High affinity immunoglobulin gamma Fc receptor IB
Short name:
IgG Fc receptor IB
Alternative name(s):
Fc-gamma RIB
Short name:
FcRIB
Short name:
hFcgammaRIB
Gene namesi
Name:FCGR1B
Synonyms:IGFRB
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 1

Organism-specific databases

EuPathDBiHostDB:ENSG00000198019.12.
HGNCiHGNC:3614. FCGR1B.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini16 – 198ExtracellularSequence analysisAdd BLAST183
Transmembranei199 – 219HelicalSequence analysisAdd BLAST21
Topological domaini220 – 280CytoplasmicSequence analysisAdd BLAST61

Keywords - Cellular componenti

Cell membrane, Membrane

Pathology & Biotechi

Organism-specific databases

DisGeNETi2210.
OpenTargetsiENSG00000198019.
PharmGKBiPA28061.

Chemistry databases

DrugBankiDB00028. Immune Globulin Human.

Polymorphism and mutation databases

BioMutaiFCGR1B.
DMDMi74760649.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 15Sequence analysisAdd BLAST15
ChainiPRO_000033146216 – 280High affinity immunoglobulin gamma Fc receptor IBAdd BLAST265

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi43 ↔ 85PROSITE-ProRule annotation
Glycosylationi59N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi124 ↔ 168PROSITE-ProRule annotation
Glycosylationi152N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi163N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ92637.
PeptideAtlasiQ92637.
PRIDEiQ92637.

PTM databases

iPTMnetiQ92637.
PhosphoSitePlusiQ92637.

Expressioni

Inductioni

Up-regulated by IFNG/IFN-gamma.2 Publications

Gene expression databases

BgeeiENSG00000198019.
CleanExiHS_FCGR1B.
ExpressionAtlasiQ92637. baseline and differential.
GenevisibleiQ92637. HS.

Interactioni

GO - Molecular functioni

Protein-protein interaction databases

STRINGi9606.ENSP00000358391.

Structurei

3D structure databases

ProteinModelPortaliQ92637.
SMRiQ92637.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini22 – 101Ig-like C2-type 1Add BLAST80
Domaini95 – 184Ig-like C2-type 2Add BLAST90

Sequence similaritiesi

Keywords - Domaini

Immunoglobulin domain, Repeat, Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG410IVK2. Eukaryota.
ENOG410YF57. LUCA.
GeneTreeiENSGT00760000119130.
HOGENOMiHOG000251632.
HOVERGENiHBG051602.
InParanoidiQ92637.
PhylomeDBiQ92637.
TreeFamiTF335097.

Family and domain databases

Gene3Di2.60.40.10. 3 hits.
InterProiView protein in InterPro
IPR007110. Ig-like_dom.
IPR036179. Ig-like_dom_sf.
IPR013783. Ig-like_fold.
IPR003599. Ig_sub.
IPR003598. Ig_sub2.
PfamiView protein in Pfam
PF13895. Ig_2. 1 hit.
SMARTiView protein in SMART
SM00409. IG. 2 hits.
SM00408. IGc2. 2 hits.
SUPFAMiSSF48726. SSF48726. 2 hits.
PROSITEiView protein in PROSITE
PS50835. IG_LIKE. 2 hits.

Sequences (3)i

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 3 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q92637-1) [UniParc]FASTAAdd to basket
Also known as: b2

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MWFLTTLLLW VPVDGQVDTT KAVITLQPPW VSVFQEETVT LHCEVLHLPG
60 70 80 90 100
SSSTQWFLNG TATQTSTPSY RITSASVNDS GEYRCQRGLS GRSDPIQLEI
110 120 130 140 150
HRGWLLLQVS SRVFMEGEPL ALRCHAWKDK LVYNVLYYRN GKAFKFFHWN
160 170 180 190 200
SNLTILKTNI SHNGTYHCSG MGKHRYTSAG ISQYTVKGLQ LPTPVWFHVL
210 220 230 240 250
FYLAVGIMFL VNTVLWVTIR KELKRKKKWN LEISLDSGHE KKVISSLQED
260 270 280
RHLEEELKCQ EQKEEQLQEG VHRKEPQGAT
Length:280
Mass (Da):32,232
Last modified:February 1, 1997 - v1
Checksum:iC6C6C45AE3D345C6
GO
Isoform 2 (identifier: Q92637-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     188-223: GLQLPTPVWFHVLFYLAVGIMFLVNTVLWVTIRKEL → ELFPAPVLNASVTSPLLEGNLVTLSCETKLLLQRPGL
     224-280: Missing.

Show »
Length:224
Mass (Da):25,203
Checksum:iA7C9280734DB02A9
GO
Isoform 3 (identifier: Q92637-3) [UniParc]FASTAAdd to basket
Also known as: b3

The sequence of this isoform differs from the canonical sequence as follows:
     11-102: Missing.

Show »
Length:188
Mass (Da):22,136
Checksum:iF46517B3279ABEF9
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti154T → A in AAA35826 (PubMed:1430234).Curated1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Alternative sequenceiVSP_03321511 – 102Missing in isoform 3. 1 PublicationAdd BLAST92
Alternative sequenceiVSP_033216188 – 223GLQLP…IRKEL → ELFPAPVLNASVTSPLLEGN LVTLSCETKLLLQRPGL in isoform 2. CuratedAdd BLAST36
Alternative sequenceiVSP_033217224 – 280Missing in isoform 2. CuratedAdd BLAST57

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L03419 mRNA. Translation: AAA35825.1.
L03420 mRNA. Translation: AAA35826.1.
S45709
, S45704, S45705, S45707, S45708 Genomic DNA. Translation: AAD13842.1.
AL357493 Genomic DNA. No translation available.
CCDSiCCDS72844.1. [Q92637-2]
CCDS72845.1. [Q92637-1]
CCDS72846.1. [Q92637-3]
PIRiI55577.
RefSeqiNP_001004340.2. NM_001004340.3. [Q92637-3]
NP_001017986.1. NM_001017986.3. [Q92637-1]
NP_001231839.1. NM_001244910.1. [Q92637-2]
UniGeneiHs.534956.

Genome annotation databases

EnsembliENST00000369383; ENSP00000358390; ENSG00000198019. [Q92637-3]
GeneIDi2210.
KEGGihsa:2210.
UCSCiuc031upv.2. human. [Q92637-1]

Keywords - Coding sequence diversityi

Alternative splicing

Similar proteinsi

Entry informationi

Entry nameiFCGRB_HUMAN
AccessioniPrimary (citable) accession number: Q92637
Secondary accession number(s): Q7KZ13, Q92638
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: February 1, 1997
Last modified: October 25, 2017
This is version 127 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 1
    Human chromosome 1: entries, gene names and cross-references to MIM
  2. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  3. SIMILARITY comments
    Index of protein domains and families