1plc

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{{STRUCTURE_1plc| PDB=1plc | SCENE= }}
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'''ACCURACY AND PRECISION IN PROTEIN CRYSTAL STRUCTURE ANALYSIS: RESTRAINED LEAST-SQUARES REFINEMENT OF THE CRYSTAL STRUCTURE OF POPLAR PLASTOCYANIN AT 1.33 ANGSTROMS RESOLUTION'''
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===ACCURACY AND PRECISION IN PROTEIN CRYSTAL STRUCTURE ANALYSIS: RESTRAINED LEAST-SQUARES REFINEMENT OF THE CRYSTAL STRUCTURE OF POPLAR PLASTOCYANIN AT 1.33 ANGSTROMS RESOLUTION===
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==Overview==
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The structure of the electron-transfer protein, plastocyanin (99 amino acids, one Cu atom, 10,500 Da) from poplar leaves, has been refined at 1.33 A resolution to a residual R = 0.15. The space group is orthorhombic, P2(1)2(1)2(1), a = 29.60 (1), b = 46.86 (3), c = 57.60 (3) A. The 14,303 reflections used in the refinement were obtained from a data set recorded on a four-circle diffractometer with radiation from a sealed fine-focus tube, combined with a data set measured on oscillation films exposed at the DESY synchrotron. The final model comprises 1442 (738 non-H) protein atoms, one Cu atom and 110 solvent molecules. Nine residues are described as disordered. The root-mean-square deviation from ideal bond lengths is 0.016 A and the root-mean-square difference between the positions of the C alpha atoms in this refined model and in the structure previously refined at 1.6 A resolution is 0.11 A. The effects of manual model adjustment, resolution, choice of standard values for geometrical parameters, inclusion of H atoms and inclusion of anomalous-scattering corrections on the copper-site geometry have been explored. The final values of the Cu-ligand bond lengths are: Cu--N(His37) 1.91, Cu--S(Cys84) 2.07, Cu--N(His87) 2.06, Cu--S(Met92) 2.82 A.
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{{ABSTRACT_PUBMED_1492962}}
==About this Structure==
==About this Structure==
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[[Category: Guss, J M.]]
[[Category: Guss, J M.]]
[[Category: Electron transport]]
[[Category: Electron transport]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 21:57:53 2008''

Revision as of 18:57, 27 July 2008

Image:1plc.png

Template:STRUCTURE 1plc

ACCURACY AND PRECISION IN PROTEIN CRYSTAL STRUCTURE ANALYSIS: RESTRAINED LEAST-SQUARES REFINEMENT OF THE CRYSTAL STRUCTURE OF POPLAR PLASTOCYANIN AT 1.33 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 1492962

About this Structure

1PLC is a Single protein structure of sequence from Populus nigra. This structure supersedes the now removed PDB entry 1pcy. Full crystallographic information is available from OCA.

Reference

Accuracy and precision in protein structure analysis: restrained least-squares refinement of the structure of poplar plastocyanin at 1.33 A resolution., Guss JM, Bartunik HD, Freeman HC, Acta Crystallogr B. 1992 Dec 1;48 ( Pt 6):790-811. PMID:1492962

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