NCIt definition : C-X-C chemokine receptor type 4 (352 aa, 40 kDa) is encoded by the human CXCR4 gene.
This protein is involved in the stimulation of mitogenic signaling pathways, vascularization
of the gastrointestinal tract and hematopoiesis.;
NCIt note : CXCR4 shares features common to G protein coupled receptors. CXCR4 is a receptor for
the CXC chemokine PBSF/SDF1 and functions as a co-receptor for HIV-1. CXCR4 is broadly
expressed in the immune and the central nervous systems and can mediate migration
of resting leukocytes and hematopoietic progenitors in response to SDF1. PBSF/SDF1
and CXCR4 define a signaling system for organ vascularization. (OMIM); C-X-C chemokine receptor type 4 acts as a coreceptor (with T-cell surface glycoprotein
CD4 as the primary receptor) or as the primary receptor for certain strains of HIV.;