Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Immunoglobulin kappa variable 2-30

Gene

IGKV2-30

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Protein inferred from homologyi

Functioni

V region of the variable domain of immunoglobulin light chains that participates in the antigen recognition. 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:20176268, PubMed:22158414). 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).3 Publications

GO - Molecular functioni

  • antigen binding Source: UniProtKB
  • serine-type endopeptidase activity Source: Reactome

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Adaptive immunity, Immunity

Enzyme and pathway databases

BioCyciZFISH:ENSG00000173758-MONOMER.
ZFISH:ENSG00000173784-MONOMER.
ReactomeiR-HSA-166663. Initial triggering of complement.
R-HSA-173623. Classical antibody-mediated complement activation.
R-HSA-198933. Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell.
R-HSA-2029481. FCGR activation.
R-HSA-2029482. Regulation of actin dynamics for phagocytic cup formation.
R-HSA-2029485. Role of phospholipids in phagocytosis.
R-HSA-2168880. Scavenging of heme from plasma.
R-HSA-2454202. Fc epsilon receptor (FCERI) signaling.
R-HSA-2730905. Role of LAT2/NTAL/LAB on calcium mobilization.
R-HSA-2871796. FCERI mediated MAPK activation.
R-HSA-2871809. FCERI mediated Ca+2 mobilization.
R-HSA-2871837. FCERI mediated NF-kB activation.
R-HSA-5690714. CD22 mediated BCR regulation.
R-HSA-983695. Antigen activates B Cell Receptor (BCR) leading to generation of second messengers.

Names & Taxonomyi

Protein namesi
Recommended name:
Immunoglobulin kappa variable 2-302 Publications
Alternative name(s):
Ig kappa chain V-II region RPMI 64101 Publication
Gene namesi
Name:IGKV2-302 Publications
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 2

Organism-specific databases

HGNCiHGNC:5785. IGKV2-30.

Subcellular locationi

GO - Cellular componenti

  • blood microparticle Source: UniProtKB
  • extracellular exosome Source: UniProtKB
  • extracellular region Source: UniProtKB
  • plasma membrane Source: Reactome
Complete GO annotation...

Keywords - Cellular componenti

Cell membrane, Membrane, Secreted

Pathology & Biotechi

Organism-specific databases

OpenTargetsiENSG00000243238.
ENSG00000281933.

Chemistry databases

DrugBankiDB00693. Fluorescein.

Polymorphism and mutation databases

DMDMi125792.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 20Sequence analysisAdd BLAST20
ChainiPRO_000001517321 – 120Immunoglobulin kappa variable 2-30Sequence analysisAdd BLAST100

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi43 ↔ 113PROSITE-ProRule annotation

Keywords - PTMi

Disulfide bond

Proteomic databases

PeptideAtlasiP06310.
PRIDEiP06310.

Interactioni

Subunit structurei

Immunoglobulins are composed of two identical heavy chains and two identical light chains, linked by disulfide bonds.1 Publication

Structurei

3D structure databases

ProteinModelPortaliP06310.
SMRiP06310.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini21 – ›120Ig-likePROSITE-ProRule annotationAdd BLAST›100

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni21 – 43Framework-11 PublicationAdd BLAST23
Regioni44 – 59Complementarity-determining-11 PublicationAdd BLAST16
Regioni60 – 74Framework-21 PublicationAdd BLAST15
Regioni75 – 81Complementarity-determining-21 Publication7
Regioni82 – 113Framework-31 PublicationAdd BLAST32
Regioni114 – ›120Complementarity-determining-31 Publication›7

Sequence similaritiesi

Contains 1 Ig-like (immunoglobulin-like) domain.PROSITE-ProRule annotation

Keywords - Domaini

Immunoglobulin domain, Immunoglobulin V region, Signal

Phylogenomic databases

GeneTreeiENSGT00860000133683.
HOVERGENiHBG018013.
OMAiQVSNRYT.
PhylomeDBiP06310.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
InterProiIPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR013106. Ig_V-set.
[Graphical view]
PfamiPF07686. V-set. 1 hit.
[Graphical view]
SMARTiSM00406. IGv. 1 hit.
[Graphical view]
SUPFAMiSSF48726. SSF48726. 1 hit.
PROSITEiPS50835. IG_LIKE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P06310-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRLPAQLLGL LMLWVPGSSG DVVMTQSPLS LPVTLGQPAS ISCRSSQSLV
60 70 80 90 100
YSDGNTYLNW FQQRPGQSPR RLIYKVSNRD SGVPDRFSGS GSGTDFTLKI
110 120
SRVEAEDVGV YYCMQGTHWP
Length:120
Mass (Da):13,185
Last modified:November 2, 2016 - v2
Checksum:iCBC23C12D0848080
GO

Sequence cautioni

The sequence CAA77315 differs from that shown. Chimeric DNA corresponding to regions V and J of immunoglobulin kappa light chain.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti120P → S in CAA77315 (PubMed:2997711).Curated1
Non-terminal residuei1201

Polymorphismi

There are several alleles. The sequence shown is that of IMGT allele IGKV2-30*01.

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC244255 Genomic DNA. No translation available.
Z00020 Genomic DNA. Translation: CAA77315.1. Sequence problems.
PIRiA01890. K2HURP.

Genome annotation databases

EnsembliENST00000468494; ENSP00000418138; ENSG00000243238.
ENST00000632910; ENSP00000488685; ENSG00000281933.

Keywords - Coding sequence diversityi

Polymorphism

Cross-referencesi

Web resourcesi

IMGT/GENE-DB

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC244255 Genomic DNA. No translation available.
Z00020 Genomic DNA. Translation: CAA77315.1. Sequence problems.
PIRiA01890. K2HURP.

3D structure databases

ProteinModelPortaliP06310.
SMRiP06310.
ModBaseiSearch...
MobiDBiSearch...

Chemistry databases

DrugBankiDB00693. Fluorescein.

Protein family/group databases

IMGTiSearch...
Search...

Polymorphism and mutation databases

DMDMi125792.

Proteomic databases

PeptideAtlasiP06310.
PRIDEiP06310.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000468494; ENSP00000418138; ENSG00000243238.
ENST00000632910; ENSP00000488685; ENSG00000281933.

Organism-specific databases

HGNCiHGNC:5785. IGKV2-30.
OpenTargetsiENSG00000243238.
ENSG00000281933.
GenAtlasiSearch...

Phylogenomic databases

GeneTreeiENSGT00860000133683.
HOVERGENiHBG018013.
OMAiQVSNRYT.
PhylomeDBiP06310.

Enzyme and pathway databases

BioCyciZFISH:ENSG00000173758-MONOMER.
ZFISH:ENSG00000173784-MONOMER.
ReactomeiR-HSA-166663. Initial triggering of complement.
R-HSA-173623. Classical antibody-mediated complement activation.
R-HSA-198933. Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell.
R-HSA-2029481. FCGR activation.
R-HSA-2029482. Regulation of actin dynamics for phagocytic cup formation.
R-HSA-2029485. Role of phospholipids in phagocytosis.
R-HSA-2168880. Scavenging of heme from plasma.
R-HSA-2454202. Fc epsilon receptor (FCERI) signaling.
R-HSA-2730905. Role of LAT2/NTAL/LAB on calcium mobilization.
R-HSA-2871796. FCERI mediated MAPK activation.
R-HSA-2871809. FCERI mediated Ca+2 mobilization.
R-HSA-2871837. FCERI mediated NF-kB activation.
R-HSA-5690714. CD22 mediated BCR regulation.
R-HSA-983695. Antigen activates B Cell Receptor (BCR) leading to generation of second messengers.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
InterProiIPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR013106. Ig_V-set.
[Graphical view]
PfamiPF07686. V-set. 1 hit.
[Graphical view]
SMARTiSM00406. IGv. 1 hit.
[Graphical view]
SUPFAMiSSF48726. SSF48726. 1 hit.
PROSITEiPS50835. IG_LIKE. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiKV230_HUMAN
AccessioniPrimary (citable) accession number: P06310
Secondary accession number(s): A0A075B6S3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 1, 1988
Last sequence update: November 2, 2016
Last modified: November 30, 2016
This is version 107 of the entry and version 2 of the sequence. [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 2
    Human chromosome 2: entries, gene names and cross-references to MIM
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.