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- W1998215213 startingPage "2014" @default.
- W1998215213 abstract "Several putative peptide-processing endoproteases have been identified by homology to the yeast Kex2 endoprotease, including furin, PC2, and PC1. However, the question is still open as to which might be involved in peptide posttranslational processing. To enable detailed comparisons of physiological changes in peptide processing with biochemical and molecular biological studies, we cloned rat pituitary cDNAs for PC1 and PC2. The amino acid sequence homologies among rat, human, and mouse PC1, PC2, and furin are consistent with each being a highly conserved but distinct member of a larger family of mammalian subtilisin-like proteases. PC1 and PC2 mRNAs show a restricted distribution among rat tissues and cultured cell lines, consistent with a role in tissue-specific peptide processing; the occurrence of furin mRNA among these tissues and cell lines is much more widespread, being high in many nonneuroendocrine tissues. In the neurointer mediate pituitary, PC1 and PC2 mRNAs are strikingly regulated in response to dopaminergic agents, in parallel with mRNAs for POMC, peptidylglycine α-amidating monooxygenase, and carboxypeptidase H. In AtT-20 cells, PC1 mRNA is coregulated with POMC and peptidylglycine a-amidating monooxy genase mRNAs in response to CRH and glucocorticoids. When the endogenous PC1 mRNA level in AtT-20 cells is significantly and specifically decreased by stable expression of antisense RNA to PC1, biosynthetic labeling of newly synthesized POMC-derived peptides shows a substantial blockade of normal POMC processing. These data are consistent with a role for PC1 protein in endoproteolysis, either as a processing endoprotease or as the activator of the actual processing endoprotease(s)." @default.
- W1998215213 created "2016-06-24" @default.
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- W1998215213 date "1991-12-01" @default.
- W1998215213 modified "2023-10-16" @default.
- W1998215213 title "Prohormone-Converting Enzymes: Regulation and Evaluation of Function Using Antisense RNA" @default.
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- W1998215213 doi "https://doi.org/10.1210/mend-5-12-2014" @default.
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