1plb

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[[Image:1plb.gif|left|200px]]
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{{STRUCTURE_1plb| PDB=1plb | SCENE= }}
{{STRUCTURE_1plb| PDB=1plb | SCENE= }}
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'''HIGH-RESOLUTION SOLUTION STRUCTURE OF REDUCED PARSLEY PLASTOCYANIN'''
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===HIGH-RESOLUTION SOLUTION STRUCTURE OF REDUCED PARSLEY PLASTOCYANIN===
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==Overview==
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A high-resolution three-dimensional solution structure of parsley plastocyanin has been determined using 1H-NMR-derived data. An ensemble of 30 conformers has been calculated, exhibiting an atomic root mean square distribution about the mean coordinate positions of 0.37 +/- 0.03 A for backbone atoms and 0.75 +/- 0.04 A for all heavy atoms. (These values exclude residues 8-10 which are disordered.) The global fold of parsley plastocyanin is closely similar to those of other plastocyanins which have been structurally characterized by X-ray diffraction and NMR methods. However, deletion of residues at positions 57 and 58 of the consensus plastocyanin sequence causes elimination of a turn found in most higher plant plastocyanins. This turn is located in an acidic patch binding site, which consists of two clusters of acidic residues at positions 42-45 and 59-61. These residues surround the side chain of Tyr 83, which has been shown to be involved in binding of and electron transfer from cytochrome f, one of plastocyanin's physiological partners. The acidic recognition site is further disrupted in parsley plastocyanin by nonconservative substitution of two charged residues at positions 59 and 60. The NMR-derived structures show that E53, E85, and E95 compensate for these substitutions and give parsley plastocyanin an acidic recognition site of similar extent to that of other higher plant plastocyanins.(ABSTRACT TRUNCATED AT 250 WORDS)
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{{ABSTRACT_PUBMED_8204598}}
==About this Structure==
==About this Structure==
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1PLB is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Petroselinum_crispum Petroselinum crispum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PLB OCA].
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1PLB is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Petroselinum_crispum Petroselinum crispum]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PLB OCA].
==Reference==
==Reference==
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[[Category: Hill, H A.O.]]
[[Category: Hill, H A.O.]]
[[Category: Electron transport protein]]
[[Category: Electron transport protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:13:17 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 09:55:36 2008''

Revision as of 06:55, 28 July 2008

Image:1plb.png

Template:STRUCTURE 1plb

HIGH-RESOLUTION SOLUTION STRUCTURE OF REDUCED PARSLEY PLASTOCYANIN

Template:ABSTRACT PUBMED 8204598

About this Structure

1PLB is a Single protein structure of sequence from Petroselinum crispum. Full experimental information is available from OCA.

Reference

High-resolution solution structure of reduced parsley plastocyanin., Bagby S, Driscoll PC, Harvey TS, Hill HA, Biochemistry. 1994 May 31;33(21):6611-22. PMID:8204598

Page seeded by OCA on Mon Jul 28 09:55:36 2008

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