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>   home   >   Products   >   Primary Antibodies   >   Signal Transduction   >   VLA alpha 4 Antibody   

VLA alpha 4 Antibody

Rabbit Monoclonal Antibody

  • WB - VLA alpha 4 Antibody AJ1818a
    A. Western blot analysis on Jurkat cell lysate using anti-VLA-alpha4 RabMAb (Cat. #AJ1818a), dilution 1:2000.
  • IHC - VLA alpha 4 Antibody AJ1818a
    B. Immunohistochemical staining of paraffin-embedded human tonsils using anti-VLA-alpha4 RabMAb (Cat. #AJ1818a).
Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession P13612
Reactivity Human
Host Rabbit
Clonality Monoclonal
Clone Names EPR1355Y
Calculated MW 114900 Da
Gene ID 3676
Other Names Integrin alpha-4, CD49 antigen-like family member D, Integrin alpha-IV, VLA-4 subunit alpha, CD49d, ITGA4, CD49D
Target/Specificity A synthetic peptide corresponding to residues near the C-terminus of human VLA-alpha 4 was used as an immunogen.
Dilution WB~~1:1000~2000
Format 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsVLA alpha 4 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
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.
Cellular Location Membrane; Single-pass type I membrane protein
Research Areas
Citations (0)

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VLA-4 is a cell surface heterodimer in the integrin superfamily of adhesion receptors. Anti-VLA-4 antibodies inhibited cytolytic T cell activity, with inhibitory activity directed against the effector T cells rather than their targets. Thus, whereas other VLA receptors appear to mediate cell--matrix interactions, VLA-4 may have a cell--cell adhesion function. Alpha 4 stands apart from all other known integrin alpha subunit sequences because (i) alpha 4 has neither an inserted I-domain, nor a disulfide-linked C-terminal fragment, (ii) its sequence is the most unique and (iii) only alpha 4 has a potential protease cleavage site, near the middle of the coding region, which appears responsible for the characteristic 80,000 and 70,000 Mr fragments of alpha 4 (1). Unlike any other integrin alpha subunit, the intact (150 kDa) alpha 4 subunit of VLA-4 can sometimes be cleaved into two noncovalently associated fragments (80 and 70 kDa) (2). The VLA-4 integrins are indispensable for embryogenesis, hematopoiesis and immune responses, possibly because alpha4 regulates cellular functions differently from other integrins through its cytoplasmic tail (3).


1. Takada Y, et al. EMBO J, 8(5):1361-8, 1989
2. Teixido J, et al. J Biol Chem 267(3):1786-91, 1992
3. Liu S, et al. Nature 402(6762):676-81, 1999

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Cat# AJ1818a
(40 western blots)
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