1bxu

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1bxu.gif|left|200px]]
+
{{Seed}}
 +
[[Image:1bxu.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1bxu| PDB=1bxu | SCENE= }}
{{STRUCTURE_1bxu| PDB=1bxu | SCENE= }}
-
'''OXIDIZED PLASTOCYANIN FROM SYNECHOCOCCUS SP.'''
+
===OXIDIZED PLASTOCYANIN FROM SYNECHOCOCCUS SP.===
-
==Overview==
+
<!--
-
The crystal structures of oxidized and reduced plastocyanins from Synechococcus sp. PCC 7942 have been determined at 1.9 and 1.8 A resolution, respectively, at pH 5.0. The protein consists of only 91 amino acid residues, the smallest number known for a plastocyanin, and apparently lacks the mostly conserved acidic patch that is believed to be important for recognition with electron-transfer partners. The protein has two acidic residues, Glu42 and Glu85, around Tyr83, which is thought to be a possible conduit for electrons, but these are neutralized by Arg88 and Lys58. Residue Arg88 interacts with Tyr83 through a pi-pi interaction in which the guanidinium group of the former completely overlaps the aromatic ring of the tyrosine. Reduction of the protein at pH 5.0 causes a lengthening of one Cu-N(His) bond by 0.36 A, despite the small rms deviation of 0.08 A calculated for the backbone atoms. Moreover, significant conformational changes of Arg88 and Lys58, along with the movement of a water molecule adjacent to the OH group of Tyr83, were observed on reduction; the guanidinium group of Arg88 rotates by more than 11 degrees, and the water molecule moves by 0.42 A. The changes around the copper site and the alterations around Tyr83 may be linked to the reduction of the copper.
+
The line below this paragraph, {{ABSTRACT_PUBMED_10320332}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 10320332 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_10320332}}
==About this Structure==
==About this Structure==
Line 31: Line 35:
[[Category: Copper protein]]
[[Category: Copper protein]]
[[Category: Electron transfer]]
[[Category: Electron transfer]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:05:39 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 19:53:28 2008''

Revision as of 16:53, 30 June 2008

Image:1bxu.png

Template:STRUCTURE 1bxu

OXIDIZED PLASTOCYANIN FROM SYNECHOCOCCUS SP.

Template:ABSTRACT PUBMED 10320332

About this Structure

1BXU is a Single protein structure of sequence from Synechococcus sp.. Full crystallographic information is available from OCA.

Reference

Crystal structure determinations of oxidized and reduced plastocyanin from the cyanobacterium Synechococcus sp. PCC 7942., Inoue T, Sugawara H, Hamanaka S, Tsukui H, Suzuki E, Kohzuma T, Kai Y, Biochemistry. 1999 May 11;38(19):6063-9. PMID:10320332

Page seeded by OCA on Mon Jun 30 19:53:28 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1bxu"
Personal tools