1u56
From Proteopedia
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|PDB= 1u56 |SIZE=350|CAPTION= <scene name='initialview01'>1u56</scene>, resolution 1.90Å | |PDB= 1u56 |SIZE=350|CAPTION= <scene name='initialview01'>1u56</scene>, resolution 1.90Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> | + | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= Tar4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=119072 Thermoanaerobacter tengcongensis]) | |GENE= Tar4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=119072 Thermoanaerobacter tengcongensis]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1u4h|1U4H]], [[1u55|1U55]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1u56 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1u56 OCA], [http://www.ebi.ac.uk/pdbsum/1u56 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1u56 RCSB]</span> | ||
}} | }} | ||
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[[Category: Marletta, M A.]] | [[Category: Marletta, M A.]] | ||
[[Category: Pellicena, P.]] | [[Category: Pellicena, P.]] | ||
| - | [[Category: CL]] | ||
| - | [[Category: HEM]] | ||
[[Category: chemotaxis]] | [[Category: chemotaxis]] | ||
[[Category: h-nox domain]] | [[Category: h-nox domain]] | ||
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[[Category: signal transduction]] | [[Category: signal transduction]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:05:31 2008'' |
Revision as of 21:05, 30 March 2008
| |||||||
| , resolution 1.90Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | Tar4 (Thermoanaerobacter tengcongensis) | ||||||
| Related: | 1U4H, 1U55
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of an oxygen binding H-NOX domain related to soluble guanylate cyclases (Water-ligated, ferric form)
Overview
Soluble guanylate cyclases are nitric oxide-responsive signaling proteins in which the nitric oxide sensor is a heme-binding domain of unknown structure that we have termed the heme-NO and oxygen binding (H-NOX) domain. H-NOX domains are also found in bacteria, either as isolated domains, or are fused through a membrane-spanning region to methyl-accepting chemotaxis proteins. We have determined the crystal structure of an oxygen-binding H-NOX domain of one such signaling protein from the obligate anaerobe Thermoanaerobacter tengcongensis at 1.77-angstroms resolution, revealing a protein fold unrelated to known structures. Particularly striking is the structure of the protoporphyrin IX group, which is distorted from planarity to an extent not seen before in protein-bound heme groups. Comparison of the structure of the H-NOX domain in two different crystal forms suggests a mechanism whereby alteration in the degree of distortion of the heme group is coupled to changes on the molecular surface of the H-NOX domain and potentially to changes in intermolecular interactions.
About this Structure
1U56 is a Single protein structure of sequence from Thermoanaerobacter tengcongensis. Full crystallographic information is available from OCA.
Reference
Crystal structure of an oxygen-binding heme domain related to soluble guanylate cyclases., Pellicena P, Karow DS, Boon EM, Marletta MA, Kuriyan J, Proc Natl Acad Sci U S A. 2004 Aug 31;101(35):12854-9. Epub 2004 Aug 23. PMID:15326296
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