1s6a

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[[Image:1s6a.jpg|left|200px]]<br /><applet load="1s6a" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1s6a.jpg|left|200px]]
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caption="1s6a, resolution 1.69&Aring;" />
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'''The X-ray structure of the cyanobacteria Synechocystis hemoglobin "cyanoglobin" with azide ligand'''<br />
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{{Structure
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|PDB= 1s6a |SIZE=350|CAPTION= <scene name='initialview01'>1s6a</scene>, resolution 1.69&Aring;
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|SITE=
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|LIGAND= <scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene>, <scene name='pdbligand=AZI:AZIDE+ION'>AZI</scene> and <scene name='pdbligand=HEM:PROTOPORPHYRIN IX CONTAINING FE'>HEM</scene>
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|ACTIVITY=
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|GENE= GLBN, SLR2097 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1143 Synechocystis sp.])
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}}
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'''The X-ray structure of the cyanobacteria Synechocystis hemoglobin "cyanoglobin" with azide ligand'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1S6A is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.] with <scene name='pdbligand=FLC:'>FLC</scene>, <scene name='pdbligand=AZI:'>AZI</scene> and <scene name='pdbligand=HEM:'>HEM</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S6A OCA].
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1S6A is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S6A OCA].
==Reference==
==Reference==
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Crystallographic analysis of synechocystis cyanoglobin reveals the structural changes accompanying ligand binding in a hexacoordinate hemoglobin., Trent JT 3rd, Kundu S, Hoy JA, Hargrove MS, J Mol Biol. 2004 Aug 20;341(4):1097-108. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15289104 15289104]
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Crystallographic analysis of synechocystis cyanoglobin reveals the structural changes accompanying ligand binding in a hexacoordinate hemoglobin., Trent JT 3rd, Kundu S, Hoy JA, Hargrove MS, J Mol Biol. 2004 Aug 20;341(4):1097-108. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15289104 15289104]
[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Synechocystis sp.]]
[[Category: Synechocystis sp.]]
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[[Category: truncated]]
[[Category: truncated]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:58:27 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:01:04 2008''

Revision as of 12:01, 20 March 2008

Image:1s6a.jpg


PDB ID 1s6a

Drag the structure with the mouse to rotate
, resolution 1.69Å
Ligands: , and
Gene: GLBN, SLR2097 (Synechocystis sp.)
Coordinates: save as pdb, mmCIF, xml



The X-ray structure of the cyanobacteria Synechocystis hemoglobin "cyanoglobin" with azide ligand


Overview

The crystal structures of cyanide and azide-bound forms of the truncated hemoglobin from Synechocystis are presented at 1.8 angstroms resolution. A comparison with the structure of the endogenously liganded protein reveals a conformational shift unprecedented in hemoglobins, and provides the first picture of a hexacoordinate hemoglobin in both the bis-histidyl and the exogenously coordinated states. The structural changes between the different conformations are confined to two regions of the protein; the B helix, and the E helix, including the EF loop. A molecular "hinge" controlling movement of the E helix is observed in the EF loop, which is composed of three principal structural elements: Arg64, the heme-d-propionate, and a three-residue extension of the F helix. Additional features of the structural transition between the two protein conformations are discussed as they relate to the complex ligand-binding behavior observed in hexacoordinate hemoglobins, and the potential physiological function of this class of proteins.

About this Structure

1S6A is a Single protein structure of sequence from Synechocystis sp.. Full crystallographic information is available from OCA.

Reference

Crystallographic analysis of synechocystis cyanoglobin reveals the structural changes accompanying ligand binding in a hexacoordinate hemoglobin., Trent JT 3rd, Kundu S, Hoy JA, Hargrove MS, J Mol Biol. 2004 Aug 20;341(4):1097-108. PMID:15289104

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