Localization of the Gene Encoding Peptidylglycine α-Amidating Monooxygenase (PAM) to Human Chromosome 5q14-5q21

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Ouafik, L'Houcine | Mattei, Marie Geneviève | Giraud, Pierre | Oliver, Charles | Eipper, Betty | Mains, Richard

Edité par CCSD ; Elsevier -

International audience. Peptidylglycine alpha-amidating monooxygenase (PAM; EC 1.14.17.3) is a multifunctional protein containing two enzymes that act sequentially to catalyze the alpha-amidation of neuroendocrine peptides. Southern blot analysis of human placental DNA demonstrated that PAM is encoded by a single gene. The chromosomal localization of the PAM gene was established using in situ hybridization. A 2.2-kb human PAM cDNA hybridized to human metaphase chromosomes revealed a significant clustering of silver grains over chromosome 5 bands q14-q21. The gene encoding another enzyme important in the post-translational processing of neuroendocrine precursors, prohormone convertase 1 (PC1), is localized in the same region (5q15-q21).

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