1or4

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[[Image:1or4.gif|left|200px]]
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{{STRUCTURE_1or4| PDB=1or4 | SCENE= }}
{{STRUCTURE_1or4| PDB=1or4 | SCENE= }}
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'''Crystal Structure of HemAT sensor domain from B.subtilis in the cyano-liganded form'''
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===Crystal Structure of HemAT sensor domain from B.subtilis in the cyano-liganded form===
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==Overview==
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Much is now known about chemotaxis signaling transduction for Escherichia coli and Salmonella typhimurium. The mechanism of chemotaxis of Bacillus subtilis is, in a sense, reversed. Attractant binding strengthens the activity of histidine kinase in B. subtilis, instead of an inhibition reaction. The HemAT from B. subtilis can detect oxygen and transmit the signal to regulatory proteins that control the direction of flagella rotation. We have determined the crystal structures of the HemAT sensor domain in liganded and unliganded forms at 2.15 A and 2.7 A resolution, respectively. The liganded structure reveals a highly symmetrical organization. Tyrosine70 shows distinct conformational changes on one subunit when ligands are removed. Our study suggests that disruption of the symmetry of HemAT plays an important role in initiating the chemotaxis signaling transduction cascade.
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(as it appears on PubMed at http://www.pubmed.gov), where 12962628 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12962628}}
==About this Structure==
==About this Structure==
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[[Category: Zhang, W.]]
[[Category: Zhang, W.]]
[[Category: Globin fold]]
[[Category: Globin fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 04:10:54 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 06:36:51 2008''

Revision as of 03:36, 29 July 2008

Image:1or4.png

Template:STRUCTURE 1or4

Crystal Structure of HemAT sensor domain from B.subtilis in the cyano-liganded form

Template:ABSTRACT PUBMED 12962628

About this Structure

1OR4 is a Single protein structure of sequence from Bacillus subtilis. Full crystallographic information is available from OCA.

Reference

Structure of the oxygen sensor in Bacillus subtilis: signal transduction of chemotaxis by control of symmetry., Zhang W, Phillips GN Jr, Structure. 2003 Sep;11(9):1097-110. PMID:12962628

Page seeded by OCA on Tue Jul 29 06:36:51 2008

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