1ayg: Difference between revisions

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[[Image:1ayg.jpg|left|200px]]
{{Seed}}
[[Image:1ayg.png|left|200px]]


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{{STRUCTURE_1ayg|  PDB=1ayg  |  SCENE=  }}  
{{STRUCTURE_1ayg|  PDB=1ayg  |  SCENE=  }}  


'''SOLUTION STRUCTURE OF CYTOCHROME C-552, NMR, 20 STRUCTURES'''
===SOLUTION STRUCTURE OF CYTOCHROME C-552, NMR, 20 STRUCTURES===




==Overview==
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The solution structure of a thermostable cytochrome c-552 from a thermophilic hydrogen oxidizing bacterium Hydrogenobacter thermophilus was determined by proton nuclear magnetic resonance spectroscopy. Twenty structures were calculated by the X-PLOR program on the basis of 902 interproton distances, 21 hydrogen bonds, and 13 torsion angle constraints. The pairwise average root-mean-square deviation for the main chain heavy atoms was 0.91 +/- 0.11 A. The main chain folding of the cytochrome c-552 was almost the same as that of Pseudomonas aeruginosa cytochrome c-551 that has 59% sequence identity to the cytochrome c-552 but is less thermostable. We found several differences in local structures between the cytochromes c-552 and c-551. In the cytochrome c-552, aromatic-amino interactions were uniquely formed between Arg 35 and Tyr 32 and/or Tyr 41, the latter also having hydrophobic contacts with the side chains of Tyr 32, Ala 38, and Leu 42. Small hydrophobic cores were more tightly packed in the cytochrome c-552 because of the occupancies of Ala 5, Met 11, and Ile 76, each substituted by Phe 7, Val 13, and Val 78, respectively, in the cytochrome c-551. Some of these structural differences may contribute to the higher thermostability of the cytochrome c-552.
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{{ABSTRACT_PUBMED_9657676}}


==About this Structure==
==About this Structure==
1AYG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Hydrogenobacter_thermophilus Hydrogenobacter thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AYG OCA].  
1AYG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Hydrogenobacter_thermophilus Hydrogenobacter thermophilus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AYG OCA].  


==Reference==
==Reference==
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[[Category: Ferrous iron]]
[[Category: Ferrous iron]]
[[Category: Porphyrin]]
[[Category: Porphyrin]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 10:50:45 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 17:51:39 2008''

Revision as of 14:51, 30 June 2008

File:1ayg.png

Template:STRUCTURE 1ayg

SOLUTION STRUCTURE OF CYTOCHROME C-552, NMR, 20 STRUCTURES

Template:ABSTRACT PUBMED 9657676

About this Structure

1AYG is a Single protein structure of sequence from Hydrogenobacter thermophilus. Full experimental information is available from OCA.

Reference

Solution structure of thermostable cytochrome c-552 from Hydrogenobacter thermophilus determined by 1H-NMR spectroscopy., Hasegawa J, Yoshida T, Yamazaki T, Sambongi Y, Yu Y, Igarashi Y, Kodama T, Yamazaki K, Kyogoku Y, Kobayashi Y, Biochemistry. 1998 Jul 7;37(27):9641-9. PMID:9657676

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