Sheep Anti-Vitamin D Binding Protein (VDBP, VDB, DBP, DBP/GC, Gc Globulin, Group Specific Component, Group-specific Component, GC, hDBP, Vitamin D Binding alpha Globulin)
VDBP (Vitamin D binding protein; also group-specific component and GC-globulin) is a 52-58kD, monomeric glycoprotein member of the ALB/AFP/VDB family of molecules. It is found in blood, urine and CSF, carries Vitamin D and its metabolites, and serves as an actin-scavenging protein. Mature mouse VDBP is 460 amino acids (aa) in length. It contains three albumin-type domains (aa 26-476) that are accompanied by 14 intrachain disulfide bonds. There are three potential alternative splice forms. One shows a deletion of aa 346-421, a second shows a 67 aa substitution for aa 345-421, and a third shows a 34 aa substitution for aa 346-423. All these variants involve the second and third albumin-like domains. Mature mouse VDBP (aa 17-476) is 77% and 90% aa identical to human and rat VDBP, respectively.
Applications
Suitable for use in Direct ELISA and Western Blot. Other applications not tested.
Recommended Dilutions
Western Blot: 0.5ug/ml in lysates of mouse liver Optimal dilutions to be determined by the researcher.
Storage and Stability
Lyophilized and reconstituted products are stable for 12 months after receipt at -20°C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Immunogen
Recombinant protein corresponding to Leu17-Ser476 from mouse Vitamin D Binding Protein, expressed in NS0 cells. Uniprot/Swiss Accession: P21614
Form
Supplied as a lyophilized powder from PBS, 5% trehalose. Reconstitute with 500ul sterile PBS.
Purity
Purified by immunoaffinity chromatography.
Specificity
Recognizes mouse Vitamin D BP. In direct ELISAs, approximately 15% cross-reactivity with recombinant human Vitamin D BP
