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1oc1

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[[Image:1oc1.jpg|left|200px]]
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{{Seed}}
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{{STRUCTURE_1oc1| PDB=1oc1 | SCENE= }}
{{STRUCTURE_1oc1| PDB=1oc1 | SCENE= }}
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'''ISOPENICILLIN N SYNTHASE AMINOADIPOYL-CYSTEINYL-AMINOBUTYRATE-FE COMPLEX'''
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===ISOPENICILLIN N SYNTHASE AMINOADIPOYL-CYSTEINYL-AMINOBUTYRATE-FE COMPLEX===
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==Overview==
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Isopenicillin N synthase (IPNS) is a non-haem iron(II) oxidase which catalyses the biosynthesis of isopenicillin N from the tripeptide delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-valine (ACV). Herein we report crystallographic studies to investigate the reaction of IPNS with the truncated substrate analogue delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-alpha-aminobutyrate (ACAb). It has been reported previously that this analogue gives rise to three beta-lactam products when incubated with IPNS: two methyl penams and a cepham. Crystal structures of the IPNS-Fe(II)-ACAb and IPNS-Fe(II)-ACAb-NO complexes have now been solved and are reported herein. These structures and modelling studies based on them shed light on the diminished product selectivity shown by IPNS in its reaction with ACAb and further rationalize the presence of certain key residues at the IPNS active site.
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The line below this paragraph, {{ABSTRACT_PUBMED_12622704}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 12622704 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12622704}}
==About this Structure==
==About this Structure==
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[[Category: Oxygenase]]
[[Category: Oxygenase]]
[[Category: Penicillin biosynthesis]]
[[Category: Penicillin biosynthesis]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 03:39:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 04:22:10 2008''

Revision as of 01:22, 28 July 2008

Image:1oc1.png

Template:STRUCTURE 1oc1

ISOPENICILLIN N SYNTHASE AMINOADIPOYL-CYSTEINYL-AMINOBUTYRATE-FE COMPLEX

Template:ABSTRACT PUBMED 12622704

About this Structure

1OC1 is a Single protein structure of sequence from Emericella nidulans. Full crystallographic information is available from OCA.

Reference

Structural studies on the reaction of isopenicillin N synthase with the substrate analogue delta-(l-alpha-aminoadipoyl)-l-cysteinyl-d-alpha-aminobutyrate., Long AJ, Clifton IJ, Roach PL, Baldwin JE, Schofield CJ, Rutledge PJ, Biochem J. 2003 Jun 15;372(Pt 3):687-93. PMID:12622704

Page seeded by OCA on Mon Jul 28 04:22:10 2008

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