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7pcy

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Revision as of 07:27, 25 December 2014

THE CRYSTAL STRUCTURE OF PLASTOCYANIN FROM A GREEN ALGA, ENTEROMORPHA PROLIFERA

Structural highlights

7pcy is a 1 chain structure with sequence from Ulva prolifera. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[PLAS_ENTPR] Participates in electron transfer between P700 and the cytochrome b6-f complex in photosystem I.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The crystal structure of the Cu-containing protein plastocyanin (Mr 10,500) from the green alga Enteromorpha prolifera has been solved by molecular replacement. The structure was refined by constrained-restrained and restrained reciprocal space least-squares techniques. The refined model includes 111 solvent sites. There is evidence for alternate conformers at eight residues. The residual is 0.12 for a data set comprising 74% of all observations accessible at 1.85 A resolution. The beta-sandwich structure of the algal plastocyanin is effectively the same as that of poplar leaf (Populus nigra var. italica) plastocyanin determined at 1.6 A resolution. The sequence homology between the two proteins is 56%. Differences between the contacts in the hydrophobic core create some significant (0.5 to 1.2 A) movements of the polypeptide backbone, resulting in small differences between the orientations and separations of corresponding beta-strands. These differences are most pronounced at the end of the molecule remote from the Cu site. The largest structural differences occur in the single non-beta strand, which includes the sole turn of helix in the molecule: two of the residues in a prominent kink of the poplar plastocyanin backbone are missing from the algal plastocyanin sequence, and there is a significant change in the position of the helical segment in relation to the beta-sandwich. Several other small but significant structural differences can be correlated with intermolecular contacts in the crystals. An intramolecular carboxyl-carboxylate hydrogen bond in the algal plastocyanin may be associated with an unusually high pKa. The dimensions of the Cu site in the two plastocyanins are, within the limits of precision, identical.

Crystal structure of plastocyanin from a green alga, Enteromorpha prolifera.,Collyer CA, Guss JM, Sugimura Y, Yoshizaki F, Freeman HC J Mol Biol. 1990 Feb 5;211(3):617-32. PMID:2308169^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Collyer CA, Guss JM, Sugimura Y, Yoshizaki F, Freeman HC. Crystal structure of plastocyanin from a green alga, Enteromorpha prolifera. J Mol Biol. 1990 Feb 5;211(3):617-32. PMID:2308169

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/7pcy"

Categories: Ulva prolifera | Collyer, C A | Freeman, H C | Guss, J M | Electron transport protein

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[7pcy]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Ulva_prolifera Ulva prolifera]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7PCY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7PCY FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene></td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7pcy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7pcy OCA], [http://www.rcsb.org/pdb/explore.do?structureId=7pcy RCSB], [http://www.ebi.ac.uk/pdbsum/7pcy PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7pcy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7pcy OCA], [http://www.rcsb.org/pdb/explore.do?structureId=7pcy RCSB], [http://www.ebi.ac.uk/pdbsum/7pcy PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/PLAS_ENTPR PLAS_ENTPR]] Participates in electron transfer between P700 and the cytochrome b6-f complex in photosystem I.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 29: / Line 31: @@
 </StructureSection>
 [[Category: Ulva prolifera]]
-[[Category: Collyer, C A.]]
+[[Category: Collyer, C A]]
-[[Category: Freeman, H C.]]
+[[Category: Freeman, H C]]
-[[Category: Guss, J M.]]
+[[Category: Guss, J M]]
 [[Category: Electron transport protein]]

7pcy

From Proteopedia

Revision as of 07:27, 25 December 2014

THE CRYSTAL STRUCTURE OF PLASTOCYANIN FROM A GREEN ALGA, ENTEROMORPHA PROLIFERA

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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