Integrin alpha 3/CD49c in HT1080 Human Cell Line. Integrin alpha 3/CD49c was detected in immersion fixed HT1080 human fibrosarcoma cell line using Mouse Anti-Human Integrin alpha 3/CD49c Monoclonal Antibody (Catalog # MAB1345) at 25 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to plasma membranes and cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Integrin alpha 3/CD49c
(Very Late Antigen 3) is a member of the integrin family, beta 1 subfamily,
of cell membrane adhesion molecules (1-3). Integrins are
nondisulfide-linked transmembrane (TM) heterodimers that contain an alpha -
and beta -subunit (1). VLA-3 is composed of an alpha 3 and beta 1 subunit. The
alpha 3/CD49c subunit is a 130-150 kDa type I TM glycoprotein. It only
associates with the beta 1 integrin subunit. It is synthesized as a 1051 amino acid (aa) precursor that undergoes proteolytic cleavage to
generate a disulfide-linked 110 kDa, 843 aa extracellular heavy chain
and a 30 kDa, 176 aa TM/cytoplasmic light chain (1, 4, 5, 6). The heavy
chain contains seven 60 aa repeats that fold into a propeller-like
structure (7). Sequences involving the first three repeats are
associated with ligand binding (1). The light chain has two cytoplasmic
alternate splice forms. The A form cytoplasmic domain is 52 aa, while
the B form cytoplasmic domain is 37 aa (5). Human alpha 3 heavy chain is 88% aa identical to mouse heavy chain. VLA-3 is known to bind fibronectin, collagen, and laminin-1, 5, 8, 10 and 11 (1). It also binds tetraspanins such as CD9,
CD63 and CD151. CD151 binding may actually stabilize VLA-3, enabling it
to bind to additional factors (8).
Tsuji, T. et al. (2004) J. Membr. Biol. 200:115.
Gu, J. and N. Taniguchi (2004) Glycoconj. J. 21:9.
Kreidberg, J.A. (2000) Curr. Opin. Cell Biol. 12:548.
Takada, Y. et al. (1991) J. Cell. Biol. 115:257.
de Melker, A.A. et al. (1997) Lab. Invest. 76:547.
Krokhin, O.V. et al. (2003) Biochemistry 42:12950.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.
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