Vitamin D Binding Protein (VDBP, VDB, DBP, DBP/GC, Gc Globulin, Group Specific Component, Group-specific Component, GC, hDBP, Vitamin D Binding alpha Globulin, VDBG)

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.\n\nApplications: \nSuitable for use in Direct ELISA and Western Blot. Other applications not tested.\n\nRecommended Dilutions:\nDirect ELISA: 0.5-1.0ug/ml. Detection limit for rmVitamin D BP is ~ 0.3ng/well.\nWestern Blot: 0.1-0.2ug/ml. Detection limit for rmVitamin D BP is ~ 5ng/lane under non-reducing and reducing conditions.\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile 40-50% glycerol, PBS. Aliquot and store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees 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.

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