Osteoblast-testicular protein tyrosine phosphatase

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Recombinant dna technique included in method of making a...

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4353201, 4352523, 435325, 536 235, 536 243, C12N 1552

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058210849

ABSTRACT:
A previously undiscovered transmembrane protein tyrosine phosphatase expressed only in bone and testis, osteotesticular protein tyrosine phosphatase (OST-PTP), has been identified, cloned, sequenced, expressed and subjected to enzymatic analysis. Also, a truncated osteoblast specific form (OST) containing the OST-PTP receptor but lacking the catalytic domain was identified and characterized. Based on the unique expression pattern of OST-PTP and OST during osteogenesis, assays can be used to screen for abnormal bone growth patterns and metabolic bone diseases. Moreover, this novel protein provides a specific target for use in conventional and gene therapies directed at treatment of osteoporosis, osteopetrosis and other bone metabolic disorders.

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