Anti-PHEX Antibody Picoband®

Phosphate-regulating neutral endopeptidase, X-linked also known as phosphate-regulating gene with homologies to endopeptidases on the X chromosome or metalloendopeptidase homolog PEX is an enzyme that in humans is encoded by the PHEX gene. It is mapped to Xp22.11. The protein encoded by this gene is a transmembrane endopeptidase that belongs to the type II integral membrane zinc-dependent endopeptidase family. The protein is thought to be involved in bone and dentin mineralization and renal phosphate reabsorption. Mutations in this gene cause X-linked hypophosphatemic rickets. Alternative splicing results in multiple transcript variants.

Phosphate-regulating neutral endopeptidase PHEX; Metalloendopeptidase homolog PEX; Vitamin D-resistant hypophosphatemic rickets protein; X-linked hypophosphatemia protein; HYP; PHEX; PEX

Peptidase that cleaves SIBLING (small integrin-binding ligand, N-linked glycoprotein) -derived ASARM peptides, thus regulating their biological activity. Cleaves ASARM peptides between Ser and Glu or Asp residues. Regulates osteogenic cell differentiation and bone mineralization through the cleavage of the MEPE-derived ASARM peptide. Promotes dentin mineralization and renal phosphate reabsorption by cleaving DMP1- and MEPE-derived ASARM peptides. Inhibits the cleavage of MEPE by CTSB/cathepsin B thus preventing MEPE degradation.

1. Christie, P. T., Harding, B., Nesbit, M. A., Whyte, M. P., Thakker, R. V. X-linked hypophosphatemia attributable to pseudoexons of the PHEX gene. J. Clin. Endocr. Metab. 86: 3840-3844, 2001. 2. Dixon, P. H., Christie, P. T., Wooding, C., Trump, D., Grieff, M., Holm, I., Gertner, J. M., Schmidtke, J., Shah, B., Shaw, N., Smith, C., Tau, C., Schlessinger, D., Whyte, M. P., Thakker, R. V. Mutational analysis of PHEX gene in X-linked hypophosphatemia. J. Clin. Endocr. Metab. 83: 3615-3623, 1998. 3. Econs, M. J., Friedman, N. E., Rowe, P. S. N., Speer, M. C., Francis, F., Strom, T. M., Oudet, C., Smith, J. A., Ninomiya, J. T., Lee, B. E., Bergen, H. A PHEX gene mutation is responsible for adult-onset vitamin D-resistant hypophosphatemic osteomalacia: evidence that the disorder is not a distinct entity from X-linked hypophosphatemic rickets. J. Clin. Endocr. Metab. 83: 3459-3462, 1998.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.