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Complementary dna sequence of two distinct pituitary proteins homologous to kex2 and furin gene products tissue specific messenger rna encoding candidates for pro hormone processing proteinases



Complementary dna sequence of two distinct pituitary proteins homologous to kex2 and furin gene products tissue specific messenger rna encoding candidates for pro hormone processing proteinases



DNA & Cell Biology 9(6): 415-424



Based on the concept of sequence conservation around the active sites of serine proteinases, polymerase chain reaction applied to mRNA amplification allowed us to obtain a 260-bp probe which was used to screen a mouse pituitary cDNA library. The primers used derived from the cDNA sequence of active sites of Ser* and Asn* of human furin. Two cDNA sequences were obtained from a number of positive clones. These code for two similar but distinct structures (mPC1 and mPC2), each being homologous to yeast Kex2 and human furin. In situ hybridization (mPC1) and Northern blots (mPC1 and mPC2), each being homologous to yeast Kex2 and human furin. In situ hybridization (mPC1) and Northern blots (mPC1 = 3.0 kb and mPC2 = 2.8 and 4.8 kb) demonstrated tissue and cellular specificity of expression, only within endocrine and neuroendocrine cells. These data suggest that mPC1 and mPC2 represent prime candidates for tissue-specific pro-hormone converting proteinases.

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Accession: 007146117

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