"*Mixed Function Oxygenases"

The role of ascorbic acid in the biosynthesis of the neuroendocrine peptides alpha-MSH and TRH.

Ascorbate transport by AtT20 mouse pituitary corticotropic tumor cells: uptake and secretion studies.

Ascorbate is an important cofactor in the biosynthesis of alpha-amidated endocrine and neural peptides. Peptidylglycine alpha-amidating monooxygenase (PAM) is the enzyme responsible for the generation of mature COOH-terminal alpha-amidated peptides …

The characterization of the ascorbic acid-mediated alpha-amidation of alpha-melanotropin in cultured intermediate pituitary lobe cells.

Previous studies have shown that cultured rat intermediate pituitary lobe cells lose the ability to form ACTH-(1-13)NH2-related molecules (alpha MSH) and instead produce ACTH-(1-14)-related peptides. In vitro studies have shown that peptidylglycine …

Further characterization of the peptidyl alpha-amidating enzyme in rat anterior pituitary secretory granules.

In previous studies we have demonstrated a secretory granule-associated peptide alpha-amidation activity in rat anterior, intermediate, and posterior pituitary. This activity is capable of converting 125I-labeled synthetic D-Tyr-Val-Gly to labeled …

Bovine intermediate pituitary alpha-amidation enzyme: preliminary characterization.

A secretory granule-associated enzymatic activity that converts mono-[125I]-D-Tyr-Val-Gly into mono-[125I]-D-Tyr-Val-NH2 has been studied. The activity is primarily soluble and shows optimal activity at pH 7 to pH 8. Amidation activity was stimulated …