1aan

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Revision as of 10:31, 15 November 2017

CRYSTAL STRUCTURE ANALYSIS OF AMICYANIN AND APOAMICYANIN FROM PARACOCCUS DENITRIFICANS AT 2.0 ANGSTROMS AND 1.8 ANGSTROMS RESOLUTION

Structural highlights

1aan is a 1 chain structure with sequence from Atcc 17741. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[AMCY_PARDE] Primary acceptor of electrons from methylamine dehydrogenase. Passes those electrons on either a soluble cytochrome c or to pseudoazurin.

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 amicyanin, a cupredoxin isolated from Paracoccus denitrificans, has been determined by molecular replacement. The structure has been refined at 2.0 A resolution using energy-restrained least-squares procedures to a crystallographic residual of 15.7%. The copper-free protein, apoamicyanin, has also been refined to 1.8 A resolution with residual 15.5%. The protein is found to have a beta-sandwich topology with nine beta-strands forming two mixed beta-sheets. The secondary structure is very similar to that observed in the other classes of cupredoxins, such as plastocyanin and azurin. Amicyanin has approximately 20 residues at the N-terminus that have no equivalents in the other proteins; a portion of these residues forms the first beta-strand of the structure. The copper atom is located in a pocket between the beta-sheets and is found to have four coordinating ligands: two histidine nitrogens, one cysteine sulfur, and, at a longer distance, one methionine sulfur. The geometry of the copper coordination is very similar to that in the plant plastocyanins. Three of the four copper ligands are located in the loop between beta-strands eight and nine. This loop is shorter than that in the other cupredoxins, having only two residues each between the cysteine and histidine and the histidine and methionine ligands. The amicyanin and apoamicyanin structures are very similar; in particular, there is little difference in the positions of the coordinating ligands with or without copper. One of the copper ligands, a histidine, lies close to the protein surface and is surrounded on that surface by seven hydrophobic residues. This hydrophobic patch is thought to be important as an electron transfer site.

Crystal structure analysis of amicyanin and apoamicyanin from Paracoccus denitrificans at 2.0 A and 1.8 A resolution.,Durley R, Chen L, Lim LW, Mathews FS, Davidson VL Protein Sci. 1993 May;2(5):739-52. PMID:8495197^[1]

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

References

↑ Durley R, Chen L, Lim LW, Mathews FS, Davidson VL. Crystal structure analysis of amicyanin and apoamicyanin from Paracoccus denitrificans at 2.0 A and 1.8 A resolution. Protein Sci. 1993 May;2(5):739-52. PMID:8495197 doi:http://dx.doi.org/10.1002/pro.5560020506

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/1aan"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE ANALYSIS OF AMICYANIN AND APOAMICYANIN FROM PARACOCCUS DENITRIFICANS AT 2.0 ANGSTROMS AND 1.8 ANGSTROMS RESOLUTION==
 <StructureSection load='1aan' size='340' side='right' caption='[[1aan]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1aan]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_17741 Atcc 17741]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AAN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1AAN FirstGlance]. <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 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=1aan FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aan OCA], [http://pdbe.org/1aan PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1aan RCSB], [http://www.ebi.ac.uk/pdbsum/1aan 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=1aan FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aan OCA], [http://pdbe.org/1aan PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1aan RCSB], [http://www.ebi.ac.uk/pdbsum/1aan PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1aan ProSAT]</span></td></tr>
 </table>
 == Function ==

1aan

From Proteopedia

Revision as of 10:31, 15 November 2017

CRYSTAL STRUCTURE ANALYSIS OF AMICYANIN AND APOAMICYANIN FROM PARACOCCUS DENITRIFICANS AT 2.0 ANGSTROMS AND 1.8 ANGSTROMS RESOLUTION

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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