| Post Translational Modifications | Phosphorylation on Ser-1027 inhibits PXN binding. |
| Function | Integrins alpha-4/beta-1 (VLA-4) and alpha-4/beta-7 are receptors for fibronectin. They recognize one or more domains within the alternatively spliced CS-1 and CS-5 regions of fibronectin. They are also receptors for VCAM1. Integrin alpha-4/beta-1 recognizes the sequence Q-I-D-S in VCAM1. Integrin alpha-4/beta-7 is also a receptor for MADCAM1. It recognizes the sequence L-D-T in MADCAM1. On activated endothelial cells integrin VLA-4 triggers homotypic aggregation for most VLA-4-positive leukocyte cell lines. It may also participate in cytolytic T-cell interactions with target cells. ITGA4:ITGB1 binds to fractalkine (CX3CL1) and may act as its coreceptor in CX3CR1-dependent fractalkine signaling. ITGA4:ITGB1 binds to PLA2G2A via a site (site 2) which is distinct from the classical ligand-binding site (site 1) and this induces integrin conformational changes and enhanced ligand binding to site 1. Integrin ITGA4:ITGB1 represses PRKCA-mediated L-type voltage-gated channel Ca(2+) influx and ROCK-mediated calcium sensitivity in vascular smooth muscle cells via its interaction with SVEP1, thereby inhibiting vasocontraction. |
| Protein Name | Integrin Alpha-4Cd49 Antigen-Like Family Member DIntegrin Alpha-IvVla-4 Subunit AlphaCd Antigen Cd49d |
| Database Links | Reactome: R-HSA-198933Reactome: R-HSA-202733Reactome: R-HSA-216083Reactome: R-HSA-8949275Reactome: R-HSA-9679191 |
| Cellular Localisation | MembraneSingle-Pass Type I Membrane Protein |
| Alternative Protein Names | Integrin Alpha-4 proteinCd49 Antigen-Like Family Member D proteinIntegrin Alpha-Iv proteinVla-4 Subunit Alpha proteinCd Antigen Cd49d proteinITGA4 proteinCD49D protein |
Information sourced from Uniprot.org
