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Protein

Immunoglobulin kappa variable 1-33

Gene

IGKV1-33

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

Functioni

V region of the variable domain of immunoglobulin light 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: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).4 Publications

GO - Molecular functioni

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

GO - Biological processi

Keywordsi

Molecular functionBence-Jones protein
Biological processAdaptive immunity, Immunity

Enzyme and pathway databases

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-202733. Cell surface interactions at the vascular wall.
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.

Protein family/group databases

IMGT/GENE-DBIGKV1-33.

Names & Taxonomyi

Protein namesi
Recommended name:
Immunoglobulin kappa variable 1-332 Publications
Alternative name(s):
Ig kappa chain V-I region AU1 Publication
Ig kappa chain V-I region Ka1 Publication
Gene namesi
Name:IGKV1-332 Publications
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 2

Organism-specific databases

HGNCiHGNC:5737. IGKV1-33.

Subcellular locationi

GO - Cellular componenti

  • blood microparticle Source: UniProtKB
  • extracellular exosome Source: UniProtKB
  • extracellular region Source: UniProtKB
  • plasma membrane Source: Reactome

Keywords - Cellular componenti

Cell membrane, Membrane, Secreted

Pathology & Biotechi

Polymorphism and mutation databases

DMDMi125758.
125767.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 221 PublicationAdd BLAST22
ChainiPRO_000005973823 – 117Immunoglobulin kappa variable 1-33Sequence analysisAdd BLAST95

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi45 ↔ 110PROSITE-ProRule annotation

Keywords - PTMi

Disulfide bond

Proteomic databases

PeptideAtlasiP01594.
PRIDEiP01594.

Interactioni

Subunit structurei

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

Protein-protein interaction databases

DIPiDIP-58572N.

Structurei

Secondary structure

1117
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi26 – 29Combined sources4
Beta strandi31 – 35Combined sources5
Beta strandi41 – 49Combined sources9
Beta strandi55 – 60Combined sources6
Beta strandi66 – 71Combined sources6
Turni72 – 74Combined sources3
Beta strandi84 – 89Combined sources6
Beta strandi92 – 99Combined sources8
Helixi102 – 104Combined sources3
Beta strandi106 – 112Combined sources7
Beta strandi114 – 117Combined sources4

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1B0WX-ray1.80A/B/C23-117[»]
1JV5X-ray2.20A23-117[»]
1QP1X-ray2.06A/B/C23-117[»]
2Q20X-ray1.30A/B23-117[»]
3CDCX-ray1.53A/B23-117[»]
3CDFX-ray1.53A/B/C/D/E/F23-117[»]
3CDYX-ray2.43A/B23-117[»]
4K07X-ray2.83A/B/C/D/E/F/G/H/I/J20-117[»]
ProteinModelPortaliP01594.
SMRiP01594.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP01594.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini24 – ›117Ig-likePROSITE-ProRule annotationAdd BLAST›94

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni23 – 45Framework-1Add BLAST23
Regioni46 – 56Complementarity-determining-1Add BLAST11
Regioni57 – 71Framework-2Add BLAST15
Regioni72 – 78Complementarity-determining-27
Regioni79 – 110Framework-3Add BLAST32
Regioni111 – ›117Complementarity-determining-3›7

Keywords - Domaini

Immunoglobulin domain, Immunoglobulin V region, Signal

Phylogenomic databases

GeneTreeiENSGT00780000121852.
HOVERGENiHBG018013.
PhylomeDBiP01594.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
InterProiView protein in InterPro
IPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR003599. Ig_sub.
IPR013106. Ig_V-set.
PfamiView protein in Pfam
PF07686. V-set. 1 hit.
SMARTiView protein in SMART
SM00409. IG. 1 hit.
SM00406. IGv. 1 hit.
SUPFAMiSSF48726. SSF48726. 1 hit.
PROSITEiView protein in PROSITE
PS50835. IG_LIKE. 1 hit.

Sequencei

Sequence statusi: Complete.

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

P01594-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDMRVPAQLL GLLLLWLSGA RCDIQMTQSP SSLSASVGDR VTITCQASQD
60 70 80 90 100
ISNYLNWYQQ KPGKAPKLLI YDASNLETGV PSRFSGSGSG TDFTFTISSL
110
QPEDIATYYC QQYDNLP
Length:117
Mass (Da):12,848
Last modified:November 2, 2016 - v2
Checksum:iEE4F871C54A514FB
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti32S → T AA sequence (PubMed:818073).Curated1
Sequence conflicti35A → V AA sequence (PubMed:818073).Curated1
Sequence conflicti46Q → E AA sequence (PubMed:818073).Curated1
Sequence conflicti50 – 53DISN → TVLS AA sequence (PubMed:818073).Curated4
Sequence conflicti53N → D AA sequence (PubMed:5028201).Curated1
Sequence conflicti72D → A AA sequence (PubMed:818073).Curated1
Sequence conflicti75N → S AA sequence (PubMed:818073).Curated1
Sequence conflicti78T → S AA sequence (PubMed:5028201).Curated1
Sequence conflicti87S → G AA sequence (PubMed:5028201).Curated1
Sequence conflicti87S → Q AA sequence (PubMed:818073).Curated1
Sequence conflicti91 – 92TD → AH AA sequence (PubMed:5028201).Curated2
Sequence conflicti100L → V AA sequence (PubMed:818073).Curated1
Sequence conflicti105I → F AA sequence (PubMed:818073).Curated1
Sequence conflicti114 – 115DN → LD AA sequence (PubMed:818073).Curated2
Sequence conflicti115N → Y AA sequence (PubMed:5028201).Curated1
Non-terminal residuei1171

Polymorphismi

There are several alleles. The sequence shown is that of IMGT allele IGKV1-33*01.

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC244255 Genomic DNA. No translation available.
PIRiA01869. K1HUKA.
A91653. K1HUAU.
S42265.

Genome annotation databases

EnsembliENST00000473726; ENSP00000420020; ENSG00000242076.
ENST00000632835; ENSP00000487732; ENSG00000282811.

Keywords - Coding sequence diversityi

Polymorphism

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC244255 Genomic DNA. No translation available.
PIRiA01869. K1HUKA.
A91653. K1HUAU.
S42265.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1B0WX-ray1.80A/B/C23-117[»]
1JV5X-ray2.20A23-117[»]
1QP1X-ray2.06A/B/C23-117[»]
2Q20X-ray1.30A/B23-117[»]
3CDCX-ray1.53A/B23-117[»]
3CDFX-ray1.53A/B/C/D/E/F23-117[»]
3CDYX-ray2.43A/B23-117[»]
4K07X-ray2.83A/B/C/D/E/F/G/H/I/J20-117[»]
ProteinModelPortaliP01594.
SMRiP01594.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-58572N.

Protein family/group databases

IMGT/GENE-DBIGKV1-33.

Polymorphism and mutation databases

DMDMi125758.
125767.

Proteomic databases

PeptideAtlasiP01594.
PRIDEiP01594.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000473726; ENSP00000420020; ENSG00000242076.
ENST00000632835; ENSP00000487732; ENSG00000282811.

Organism-specific databases

H-InvDBiHIX0161621.
HGNCiHGNC:5737. IGKV1-33.
neXtProtiNX_P01594.
GenAtlasiSearch...

Phylogenomic databases

GeneTreeiENSGT00780000121852.
HOVERGENiHBG018013.
PhylomeDBiP01594.

Enzyme and pathway databases

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-202733. Cell surface interactions at the vascular wall.
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.

Miscellaneous databases

EvolutionaryTraceiP01594.
PROiPR:P01594.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
InterProiView protein in InterPro
IPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR003599. Ig_sub.
IPR013106. Ig_V-set.
PfamiView protein in Pfam
PF07686. V-set. 1 hit.
SMARTiView protein in SMART
SM00409. IG. 1 hit.
SM00406. IGv. 1 hit.
SUPFAMiSSF48726. SSF48726. 1 hit.
PROSITEiView protein in PROSITE
PS50835. IG_LIKE. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiKV133_HUMAN
AccessioniPrimary (citable) accession number: P01594
Secondary accession number(s): A0A087WZH9, P01603
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: November 2, 2016
Last modified: March 15, 2017
This is version 112 of the entry and version 2 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

For an example of a full length immunoglobulin kappa light chain see AC P0DOX7.Curated

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome 2
    Human chromosome 2: entries, gene names and cross-references to MIM
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references

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.