CXCL13

CXCL13
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 4ZAI, 5CBA, 5CBE
Identifiers
Aliases	CXCL13, ANGIE, ANGIE2, BCA-1, BCA1, BLC, BLR1L, SCYB13, C-X-C motif chemokine ligand 13
External IDs	OMIM: 605149 MGI: 1888499 HomoloGene: 48431 GeneCards: CXCL13
Gene location (Human) Chr. Chromosome 4 (human)[1] Band 4q21.1 Start 77,511,753 bp[1] End 77,611,834 bp[1]
Gene location (Mouse) Chr. Chromosome 5 (mouse)[2] Band 5|5 E3 Start 96,104,810 bp[2] End 96,108,927 bp[2]
RNA expression pattern Bgee Top expressed in thymus appendix lymph node spleen adrenal gland organ system lung urinary bladder colon More reference expression data BioGPS n/a
Gene ontology Molecular function receptor ligand activity CCR10 chemokine receptor binding cytokine activity heparin binding CXCR3 chemokine receptor binding chemokine activity protein heterodimerization activity fibroblast growth factor binding CXCR5 chemokine receptor binding Cellular component extracellular region extracellular space Biological process chemokine-mediated signaling pathway positive regulation of cytosolic calcium ion concentration cell-cell signaling germinal center formation regulation of angiogenesis chemotaxis endothelial cell chemotaxis to fibroblast growth factor regulation of humoral immune response cell surface receptor signaling pathway response to lipopolysaccharide regulation of cell population proliferation defense response to bacterium negative regulation of endothelial cell chemotaxis to fibroblast growth factor positive regulation of T cell chemotaxis immune response inflammatory response chronic inflammatory response defense response antimicrobial humoral immune response mediated by antimicrobial peptide regulation of signaling receptor activity G protein-coupled receptor signaling pathway lymphocyte chemotaxis across high endothelial venule positive regulation of integrin activation positive regulation of cell-cell adhesion mediated by integrin B cell chemotaxis GO:0032861, GO:0032862, GO:0032856 activation of GTPase activity neutrophil chemotaxis leukocyte chemotaxis cellular response to lipopolysaccharide Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	10563	55985
Ensembl	ENSG00000156234	ENSMUSG00000023078
UniProt	O43927	O55038
RefSeq (mRNA)	NM_006419 NM_001371558	NM_018866
RefSeq (protein)	NP_006410 NP_001358487	NP_061354
Location (UCSC)	Chr 4: 77.51 – 77.61 Mb	Chr 5: 96.1 – 96.11 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Chemokine (C-X-C motif) ligand 13 (CXCL13), also known as B lymphocyte chemoattractant (BLC) or B cell-attracting chemokine 1 (BCA-1), is a protein ligand that in humans is encoded by the CXCL13 gene.^[5][6]

Function[]

CXCL13 is a small chemokine belonging to the CXC chemokine family. As its other names suggest, this chemokine is selectively chemotactic for B cells belonging to both the B-1 and B-2 subsets, and elicits its effects by interacting with chemokine receptor CXCR5.^[5][7] CXCL13 and its receptor CXCR5 control the organization of B cells within follicles of lymphoid tissues^[8] and is expressed highly in the liver, spleen, lymph nodes, and gut of humans.^[5] The gene for CXCL13 is located on human chromosome 4 in a cluster of other CXC chemokines.^[6]

In T lymphocytes, CXCL13 expression is thought to reflect a germinal center origin of the T cell, particularly a subset of T cells called follicular B helper T cells (or T_FH cells). Hence, expression of CXCL13 in T-cell lymphomas, such as Angioimmunoblastic T-cell Lymphoma, is thought to reflect a germinal center origin of the neoplastic T-cells.^[9]

References[]

External links[]

• Human CXCL13 genome location and CXCL13 gene details page in the UCSC Genome Browser.
• Overview of all the structural information available in the PDB for UniProt: O43927 (C-X-C motif chemokine 13) at the PDBe-KB.

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