1s1z

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[[Image:1s1z.jpg|left|200px]]
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{{STRUCTURE_1s1z| PDB=1s1z | SCENE= }}
{{STRUCTURE_1s1z| PDB=1s1z | SCENE= }}
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'''Photoactivated chromophore conformation in Photoactive Yellow Protein (E46Q mutant) from 10 to 500 nanoseconds'''
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===Photoactivated chromophore conformation in Photoactive Yellow Protein (E46Q mutant) from 10 to 500 nanoseconds===
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==Overview==
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We use time-resolved crystallography to observe the structural progression of a bacterial blue light photoreceptor throughout its photocycle. Data were collected from 10 ns to 100 ms after photoactivation of the E46Q mutant of photoactive yellow protein. Refinement of transient chromophore conformations shows that the spectroscopically distinct intermediates are formed via progressive disruption of the hydrogen bond network to the chromophore. Although structural change occurs within a few nanoseconds on and around the chromophore, it takes milliseconds for a distinct pattern of tertiary structural change to fully progress through the entire molecule, thus generating the putative signaling state. Remarkably, the coupling between the chromophore conformation and the tertiary structure of this small protein is not tight: there are leads and lags between changes in the conformation of the chromophore and the protein tertiary structure.
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(as it appears on PubMed at http://www.pubmed.gov), where 15274923 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15274923}}
==About this Structure==
==About this Structure==
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[[Category: Room temperature]]
[[Category: Room temperature]]
[[Category: Time-resolved]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:11:53 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 13:12:11 2008''

Revision as of 10:12, 28 July 2008

Image:1s1z.png

Template:STRUCTURE 1s1z

Photoactivated chromophore conformation in Photoactive Yellow Protein (E46Q mutant) from 10 to 500 nanoseconds

Template:ABSTRACT PUBMED 15274923

About this Structure

1S1Z is a Single protein structure of sequence from Halorhodospira halophila. Full crystallographic information is available from OCA.

Reference

Chromophore conformation and the evolution of tertiary structural changes in photoactive yellow protein., Anderson S, Srajer V, Pahl R, Rajagopal S, Schotte F, Anfinrud P, Wulff M, Moffat K, Structure. 2004 Jun;12(6):1039-45. PMID:15274923

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