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Protein

Immunoglobulin lambda constant 7

Gene

IGLC7

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

Functioni

Constant region of immunoglobulin heavy chains. 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:17576170, PubMed:20176268).3 Publications

Miscellaneous

Displays the following serological isotype: Ke+, Oz- and two of the three characteristic amino acids of Mgc-isotype: Ala-6 and Ser-8 but instead of Thr-57 it displays Lys-57. Ke+ has Gly-46 and Oz- has Arg-83.1 Publication

Caution

For an example of a full-length immunoglobulin lambda light chain see AC P0DOX8.Curated

GO - Molecular functioni

GO - Biological processi

Keywordsi

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-977606 Regulation of Complement cascade
R-HSA-983695 Antigen activates B Cell Receptor (BCR) leading to generation of second messengers

Protein family/group databases

IMGT/GENE-DBIGLC7

Names & Taxonomyi

Protein namesi
Recommended name:
Immunoglobulin lambda constant 72 Publications
Alternative name(s):
Ig lambda-7 chain C region
Gene namesi
Name:IGLC72 Publications
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Unplaced

Organism-specific databases

EuPathDBiHostDB:ENSG00000211685.3
HGNCiHGNC:5861 IGLC7
neXtProtiNX_A0M8Q6

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_0000393470‹1 – 106Immunoglobulin lambda constant 7Add BLAST›106

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi28 ↔ 87PROSITE-ProRule annotation
Disulfide bondi105Interchain (with heavy chain)

Keywords - PTMi

Disulfide bond

Proteomic databases

EPDiA0M8Q6
PRIDEiA0M8Q6
ProteomicsDBi44

Expressioni

Gene expression databases

BgeeiENSG00000211685

Interactioni

Subunit structurei

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

GO - Molecular functioni

Protein-protein interaction databases

IntActiA0M8Q6, 1 interactor

Structurei

3D structure databases

ProteinModelPortaliA0M8Q6
SMRiA0M8Q6
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini7 – 101Ig-likePROSITE-ProRule annotationAdd BLAST95

Keywords - Domaini

Immunoglobulin C region, Immunoglobulin domain

Phylogenomic databases

HOVERGENiHBG017899
InParanoidiA0M8Q6
PhylomeDBiA0M8Q6

Family and domain databases

Gene3Di2.60.40.10, 1 hit
InterProiView protein in InterPro
IPR007110 Ig-like_dom
IPR036179 Ig-like_dom_sf
IPR013783 Ig-like_fold
IPR003006 Ig/MHC_CS
IPR003597 Ig_C1-set
PfamiView protein in Pfam
PF07654 C1-set, 1 hit
SMARTiView protein in SMART
SM00407 IGc1, 1 hit
SUPFAMiSSF48726 SSF48726, 1 hit
PROSITEiView protein in PROSITE
PS50835 IG_LIKE, 1 hit
PS00290 IG_MHC, 1 hit

Sequencei

Sequence statusi: Complete.

A0M8Q6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
GQPKAAPSVT LFPPSSEELQ ANKATLVCLV SDFNPGAVTV AWKADGSPVK
60 70 80 90 100
VGVETTKPSK QSNNKYAASS YLSLTPEQWK SHRSYSCRVT HEGSTVEKTV

APAECS
Length:106
Mass (Da):11,254
Last modified:March 15, 2017 - v3
Checksum:i372937A232ABE662
GO

Sequence cautioni

The sequence BAA20016 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.Curated
The sequence CAA36053 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.Curated
The sequence EAW59556 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Non-terminal residuei11

Polymorphismi

There are several alleles. The sequence shown is that of IMGT allele IGLC7*03.Curated

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_07789634N → Y in IMGT ALLELE IGLC7*01. 1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X51755 Genomic DNA Translation: CAA36053.1 Different initiation.
D87017 Genomic DNA Translation: BAA20016.1 Different initiation.
AC245028 Genomic DNA No translation available.
CH471095 Genomic DNA Translation: EAW59556.1 Different initiation.

Keywords - Coding sequence diversityi

Polymorphism

Similar proteinsi

Entry informationi

Entry nameiIGLC7_HUMAN
AccessioniPrimary (citable) accession number: A0M8Q6
Secondary accession number(s): A0A075B6L1
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 20, 2010
Last sequence update: March 15, 2017
Last modified: July 18, 2018
This is version 90 of the entry and version 3 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 22
    Human chromosome 22: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations

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