Glutamine-330 is not essential for activity in isopenicillin N synthase from Aspergillus nidulans
2016
Online
unknown
Zugriff:
The non-heme ferrous dependent oxidase isopenicillin N synthase (IPNS) catalyses the biosynthesis of isopenicillin N from a tripeptide substrate. The crystal structure of Aspergillus nidulans IPNS complexed to manganese reveals a six co-ordinate metal ligated by two water molecules and four protein ligands: His-214, His-270, Asp-216 and Gln-330 (the penultimate C-terminal residue). Modification of Gln-330 to Ala or Leu, or deletion of 2 or 6 residues from the C-terminus resulted in lowering of specific activity; no activity was observed after deletion of 8 residues. The results demonstrate that metal ligation by Gln-330 is not required for catalytic activity.© 1997 Federation of European Biochemical Societies.
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Glutamine-330 is not essential for activity in isopenicillin N synthase from Aspergillus nidulans
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Autor/in / Beteiligte Person: | Baldwin, Jack E. ; Christosper J Schofield ; Sami, Malkit ; Roach, Peter L. ; Toby J.N. Brown |
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Veröffentlichung: | 2016 |
Medientyp: | unknown |
DOI: | 10.1016/s0014-5793(97)00176-2 |
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