alpha-Spectrin II (AA 252-371) antibody

Antigen: alpha-Spectrin II

Binding Site: AA 252-371

Clonality: Monoclonal (35)

Host: Mouse

Reactivity: Human

Application: Western Blotting (WB), Immunofluorescence (IF)

Catalog no.: ABIN968880

Additional Information

Immunogen: Human alpha-Spectrin II

Cross-Reactivity: Dog (Canine), Chicken

No Cross-Reactivity: Rat (Rattus), Mouse (Murine)

Format: Liquid

Isotype: IgG1

Clone: 35

Description: Spectrins are central components of the cytoskeleton that form a scaffold below the plasma membrane. Spectrins contain two subunits, alpha and beta, which intertwine to form heterodimers that can self associate into elongated tetramers. alpha-spectin I and beta-spectrin I form heterodimers in red blood cells, while nonerythroid mammalian cells contain heterodimers of alpha-spectin I and II with beta-spectrin I to V. The structure of spectrins includes a succession of triple-helical repeats along with various domains, such as SH3 domain, EF hands, PH domains, and binding domains for ankyrin, actin, band 4.1, and calmodulin. alpha-spectrin II is a widely expressed non-erythroid alpha-spectrin that contains an SH3 domain, a calmodulin binding site, and two cleavage sites for proteases, such as calpains and caspase-3. beta-spectrin II is a widely expressed non-erythroid beta-spectrin that contains a C-terminal region that interacts with alpha-spectrins and a PH domain. alpha-spectrin II and beta-spectrin II, like many other spectrins, can form heterodimers that can self associate into tetramers, as well as interact with Band 4.1, F-actin, and other proteins near the plasma membrane. This scaffold of cytoskeletal and plasma membrane proteins is critical for the maintenance of cell structure.

Characteristics: 1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2. Please refer to us for technical protocols.
3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
4. Source of all serum proteins is from USDA inspected abattoirs located in the United States.

Molecular Weight: 250 kDa

Comments:

Related Products: ABIN968537, ABIN967389

Application Details

Concentration: 250 µg/ml

Purity: Purified

Purification: Purified from tissue culture supernatant or ascites by affinity chromatography.

Buffer: Aqueous buffered solution containing BSA, glycerol.

Preservative: 0.09% Sodium azide.

Storage: Store undiluted at -20° C.

Restrictions: For Research Use only

Images

Western blot analysis of alpha-Spectrin II on Jurkat cell lysate. Lane 1: 1:500, lane 2: 1:1000, lane 3: 1:2000 dilution of alpha-Spectrin II antibody.

Immunofluorescent staining of MDCK cells.

Publications

Product: Hu, Watanabe, Bennett: "Characterization of human brain cDNA encoding the general isoform of beta-spectrin." in: The Journal of biological chemistry, Vol. 267, Issue 26, pp. 18715-22, 1992 (PubMed).

Moon, McMahon: "Generation of diversity in nonerythroid spectrins. Multiple polypeptides are predicted by sequence analysis of cDNAs encompassing the coding region of human nonerythroid alpha-spectrin." in: The Journal of biological chemistry, Vol. 265, Issue 8, pp. 4427-33, 1990 (PubMed).

Nicolas, Fournier, Galand et al.: "Tyrosine phosphorylation regulates alpha II spectrin cleavage by calpain." in: Molecular and cellular biology, Vol. 22, Issue 10, pp. 3527-36, 2002 (PubMed).