کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10594326 | 981826 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Prohormone-substrate peptide sequence recognition by peptidylglycine α-amidating monooxygenase and its reflection in increased glycolate inhibitor potency
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The interactions of nineteen peptide substrates and fifteen analogous peptidomimetic glycolate inhibitors with human peptidylglycine α-amidating monooxygenase (PAM) have been investigated. The substrates and inhibitors are the prohormones of calcitonin and oxytocin and their analogues. PAM both secreted into the medium by and extracted from DMS53 small lung carcinoma cells has been studied. The results show that recognition of the prooxytocin and procalcitonin peptide sequences by the enzyme extends more than four and five amino acid residues, respectively, from their C-termini. This substrate sequence recognition is mirrored by increased inhibitor potency with increased peptide length in the glycolate peptidomimetics. Substitution of the C-terminal penultimate glycine and proline residues of prooxytocin and procalcitonin and their analogues with phenylalanine increases the enzyme binding affinity. However, this changes the binding mode from one that depends on peptide sequence recognition to another primarily determined by the phenylalanine moiety, for both the substrates and analogous glycolate inhibitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 22, Issue 23, 1 December 2012, Pages 7015-7018
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 22, Issue 23, 1 December 2012, Pages 7015-7018
نویسندگان
Kelly M. Morris, Feihua Cao, Hideki Onagi, Timothy M. Altamore, Allan B. Gamble, Christopher J. Easton,