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1ger

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[[Image:1ger.gif|left|200px]]
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{{STRUCTURE_1ger| PDB=1ger | SCENE= }}
{{STRUCTURE_1ger| PDB=1ger | SCENE= }}
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'''THE STRUCTURE OF GLUTATHIONE REDUCTASE FROM ESCHERICHIA COLI AT 1.86 ANGSTROMS RESOLUTION: COMPARISON WITH THE ENZYME FROM HUMAN ERYTHROCYTES'''
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===THE STRUCTURE OF GLUTATHIONE REDUCTASE FROM ESCHERICHIA COLI AT 1.86 ANGSTROMS RESOLUTION: COMPARISON WITH THE ENZYME FROM HUMAN ERYTHROCYTES===
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==Overview==
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The crystal structure of the dimeric flavoenzyme glutathione reductase from Escherichia coli was determined and refined to an R-factor of 16.8% at 1.86 A resolution. The molecular 2-fold axis of the dimer is local but very close to a possible crystallographic 2-fold axis; the slight asymmetry could be rationalized from the packing contacts. The 2 crystallographically independent subunits of the dimer are virtually identical, yielding no structural clue on possible cooperativity. The structure was compared with the well-known structure of the homologous enzyme from human erythrocytes with 52% sequence identity. Significant differences were found at the dimer interface, where the human enzyme has a disulfide bridge, whereas the E. coli enzyme has an antiparallel beta-sheet connecting the subunits. The differences at the glutathione binding site and in particular a deformation caused by a Leu-Ile exchange indicate why the E. coli enzyme accepts trypanothione much better than the human enzyme. The reported structure provides a frame for explaining numerous published engineering results in detail and for guiding further ones.
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(as it appears on PubMed at http://www.pubmed.gov), where 8061609 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8061609}}
==About this Structure==
==About this Structure==
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[[Category: Mittl, P R.E.]]
[[Category: Mittl, P R.E.]]
[[Category: Schulz, G E.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:28:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 05:10:47 2008''

Revision as of 02:10, 1 July 2008

Image:1ger.png

Template:STRUCTURE 1ger

THE STRUCTURE OF GLUTATHIONE REDUCTASE FROM ESCHERICHIA COLI AT 1.86 ANGSTROMS RESOLUTION: COMPARISON WITH THE ENZYME FROM HUMAN ERYTHROCYTES

Template:ABSTRACT PUBMED 8061609

About this Structure

1GER is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structure of glutathione reductase from Escherichia coli at 1.86 A resolution: comparison with the enzyme from human erythrocytes., Mittl PR, Schulz GE, Protein Sci. 1994 May;3(5):799-809. PMID:8061609

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