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Protein

Immunoglobulin heavy joining 1

Gene

IGHJ1

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein predictedi

Functioni

J region of the variable domain of immunoglobulin heavy chains that participates in the antigen recognition (PubMed:24600447). Immunoglobulins, also known as antibodies, are membrane-bound or secreted glycoproteins produced by B lymphocytes. In the recognition phase of humoral immunity, the membrane-bound immunoglobulins serve as receptors which, upon binding of a specific antigen, trigger the clonal expansion and differentiation of B lymphocytes into immunoglobulins-secreting plasma cells. Secreted immunoglobulins mediate the effector phase of humoral immunity, which results in the elimination of bound antigens (PubMed:22158414, PubMed:20176268). The antigen binding site is formed by the variable domain of one heavy chain, together with that of its associated light chain. Thus, each immunoglobulin has two antigen binding sites with remarkable affinity for a particular antigen. The variable domains are assembled by a process called V-(D)-J rearrangement and can then be subjected to somatic hypermutations which, after exposure to antigen and selection, allow affinity maturation for a particular antigen (PubMed:20176268, PubMed:17576170).4 Publications

GO - Biological processi

Keywordsi

Biological processAdaptive immunity, Immunity

Protein family/group databases

IMGT/GENE-DBIGHJ1.

Names & Taxonomyi

Protein namesi
Recommended name:
Immunoglobulin heavy joining 12 Publications
Gene namesi
Name:IGHJ12 Publications
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 14

Organism-specific databases

EuPathDBiHostDB:ENSG00000211905.1.
HGNCiHGNC:5532. IGHJ1.

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

Keywords - Cellular componenti

Cell membrane, Membrane, Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_0000439096‹1 – ›17Immunoglobulin heavy joining 1Add BLAST›17

Expressioni

Gene expression databases

BgeeiENSG00000211905.

Interactioni

Subunit structurei

Immunoglobulins are composed of two identical heavy chains and two identical light chains; disulfide-linked.1 Publication

Family & Domainsi

Family and domain databases

InterProiView protein in InterPro
IPR036179. Ig-like_dom_sf.
SUPFAMiSSF48726. SSF48726. 1 hit.

Sequencei

Sequence statusi: Complete.

A0A0C4DH62-1 [UniParc]FASTAAdd to basket

« Hide

        10 
AEYFQHWGQG TLVTVSS
Length:17
Mass (Da):1,910
Last modified:April 1, 2015 - v1
Checksum:i47100A419EC4A180
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Non-terminal residuei11
Non-terminal residuei171

Polymorphismi

The sequence shown is that of IMGT allele IGHJ1*01.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC246787 Genomic DNA. No translation available.

Genome annotation databases

EnsembliENST00000390565; ENSP00000418050; ENSG00000211905.
ENST00000634062; ENSP00000488542; ENSG00000282409.

Keywords - Coding sequence diversityi

Polymorphism

Similar proteinsi

Entry informationi

Entry nameiHJ01_HUMAN
AccessioniPrimary (citable) accession number: A0A0C4DH62
Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 15, 2017
Last sequence update: April 1, 2015
Last modified: October 25, 2017
This is version 11 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

Caution

There are several genes encoding the J region in the immunoglobulin heavy locus. The peptide described in this entry is a representative for all the peptides encoded by these genes. For examples of full-length immunoglobulin heavy chains (of different isotypes) see AC P0DOX2, AC P0DOX3, AC P0DOX4, AC P0DOX5 and AC P0DOX6.Curated

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 14
    Human chromosome 14: entries, gene names and cross-references to MIM