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1cc5

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{{STRUCTURE_1cc5| PDB=1cc5 | SCENE= }}
{{STRUCTURE_1cc5| PDB=1cc5 | SCENE= }}
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'''CRYSTAL STRUCTURE OF AZOTOBACTER CYTOCHROME C5 AT 2.5 ANGSTROMS RESOLUTION'''
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===CRYSTAL STRUCTURE OF AZOTOBACTER CYTOCHROME C5 AT 2.5 ANGSTROMS RESOLUTION===
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==Overview==
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The crystal structure of cytochrome c5 from Azotobacter vinelandii has been solved and refined to an R value of 0.29 at 2.5 A resolution. The structure of the oxidized protein was solved using a monoclinic crystal form. The structure was solved by multiple isomorphous replacements, re-fit to a solvent-leveled multiple isomorphous replacement map, and refined by restrained least squares. The structure reveals monomers associated about the crystallographic 2-fold axis by hydrophobic contacts at the "exposed heme edge". The overall conformation for the monomer is similar to that of Pseudomonas aeruginosa cytochrome c551. However, relative to a common heme conformation, c5 and c551 differ by an average of 6.8 A over 82 alpha-carbon positions and the propionates of c5 are much more exposed to solvent. The shortest heme--heme contact at the "dimer" interface is 6.3 A (Fe to Fe 16.4 A). Alignment of c5 and c551 shows that the two cytochromes, in spite of sequence differences, have remarkably similar charge distributions. A disulfide stacks on a tyrosine between the N- and C-terminal helices.
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(as it appears on PubMed at http://www.pubmed.gov), where 2993632 is the PubMed ID number.
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{{ABSTRACT_PUBMED_2993632}}
==About this Structure==
==About this Structure==
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[[Category: Carter, D C.]]
[[Category: Carter, D C.]]
[[Category: Stout, C D.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:34:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:32:26 2008''

Revision as of 17:32, 30 June 2008

Image:1cc5.png

Template:STRUCTURE 1cc5

CRYSTAL STRUCTURE OF AZOTOBACTER CYTOCHROME C5 AT 2.5 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 2993632

About this Structure

1CC5 is a Single protein structure of sequence from Azotobacter vinelandii. Full crystallographic information is available from OCA.

Reference

Crystal structure of Azotobacter cytochrome c5 at 2.5 A resolution., Carter DC, Melis KA, O'Donnell SE, Burgess BK, Furey WR Jr, Wang BC, Stout CD, J Mol Biol. 1985 Jul 20;184(2):279-95. PMID:2993632

Page seeded by OCA on Mon Jun 30 20:32:26 2008

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