Detection of Bovine SPAM1 by Western Blot. Western blot shows Recombinant Bovine SPAM1 (Catalog # 6436-GH) (5 ng/lane). PVDF membrane was probed with 2 µg/mL of Mouse Anti-Bovine SPAM1 Monoclonal Antibody (Catalog # MAB6436) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for SPAM1 at approximately 78 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
Sterile PBS to a final concentration of 0.5 mg/mL.
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.
Sperm adhesion molecule 1 (SPAM1), also known as PH-20 hyaluronidase (1), is encoded by one of the six hyaluronidase-like genes (1-3). SPAM1 is a GPI‑anchored enzyme located on the sperm surface and inner acrosomal membrane (4). SPAM1 degrades hyaluronic acid (HA), a major structural glycosaminoglycan found in extracellular matrices and basement membranes. The enzyme activity enables sperm to penetrate through the HA-rich cumulus cell layer surrounding the oocyte and therefore facilitates the fertilization process (5-7). Because of the structural similarity between HA (repeating units of GlcA beta 1-3GlcNAc) and chondroitin sulfate (repeating units of GlcA beta 1-3GalNAc), the enzyme is also able to hydrolyze chondroitin sulfate. The bovine SPAM1 is 63% identical to human homologue in sequence.
Lathrop, W.F. et al. (1990) J. Cell Biol. 111:2939.
Lin, Y. et al. (1993) Proc. Natl. Acad. Sci. U.S.A. 90:10071
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