Anti-Integrin a4 / ITGA4 / CD49d Reference Antibody (natalizumab)
Recombinant Antibody
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application ![]()
| FC, E, FTA |
---|---|
Primary Accession | P13612 |
Reactivity | Human |
Clonality | Monoclonal |
Isotype | IgG4 |
Calculated MW | 146.22 KDa |
Target/Specificity | Integrin a4 / ITGA4 / CD49d |
---|---|
Endotoxin | < 0.001EU/ µg,determined by LAL method. |
Conjugation | Unconjugated |
Expression system | CHO Cell |
Format | Purified monoclonal antibody supplied in PBS, pH6.0, without preservative.This antibody is purified through a protein A column. |
Name | ITGA4 |
---|---|
Synonyms | CD49D |
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 (PubMed:23125415). 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 (PubMed:18635536, PubMed:25398877). 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 (PubMed:35802072). |
Cellular Location | Membrane; Single-pass type I membrane protein |
Tissue Location | Expressed in vascular smooth muscle cells (at protein level). |

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