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2d2n

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Revision as of 02:58, 10 September 2015

Structure of an extracellular giant hemoglobin of the gutless beard worm Oligobrachia mashikoi

Structural highlights

2d2n is a 4 chain structure with sequence from Oligobrachia mashikoi. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	2d2m
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[GLBB1_OLIMA] The extracellular giant hemoglobin is able to bind and transport oxygen and sulfide simultaneously and reversibly at two different sites. [GLBA1_OLIMA] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [GLBB2_OLIMA] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [GLBA2_OLIMA] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites.

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

Mouthless and gutless marine animals, pogonophorans and vestimentiferans, obtain their nutrition solely from their symbiotic chemoautotrophic sulfur-oxidizing bacteria. These animals have sulfide-binding 400-kDa and/or 3,500-kDa Hb, which transports oxygen and sulfide simultaneously. The symbiotic bacteria are supplied with sulfide by Hb of the host animal and use it to provide carbon compounds. Here, we report the crystal structure of a 400-kDa Hb from pogonophoran Oligobrachia mashikoi at 2.85-A resolution. The structure is hollow-spherical, composed of a total of 24 globins as a dimer of dodecamer. This dodecameric assemblage would be a fundamental structural unit of both 400-kDa and 3,500-kDa Hbs. The structure of the mercury derivative used for phasing provides insights into the sulfide-binding mechanism. The mercury compounds bound to all free Cys residues that have been expected as sulfide-binding sites. Some of the free Cys residues are surrounded by Phe aromatic rings, and mercury atoms come into contact with these residues in the derivative structure. It is strongly suggested that sulfur atoms bound to these sites could be stabilized by aromatic-electrostatic interactions by the surrounding Phe residues.

Structure of an extracellular giant hemoglobin of the gutless beard worm Oligobrachia mashikoi.,Numoto N, Nakagawa T, Kita A, Sasayama Y, Fukumori Y, Miki K Proc Natl Acad Sci U S A. 2005 Oct 11;102(41):14521-6. Epub 2005 Oct 3. PMID:16204001^[1]

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

References

↑ Numoto N, Nakagawa T, Kita A, Sasayama Y, Fukumori Y, Miki K. Structure of an extracellular giant hemoglobin of the gutless beard worm Oligobrachia mashikoi. Proc Natl Acad Sci U S A. 2005 Oct 11;102(41):14521-6. Epub 2005 Oct 3. PMID:16204001

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2d2n"

@@ Line 5: / Line 5: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MMC:METHYL+MERCURY+ION'>MMC</scene>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2d2m|2d2m]]</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=2d2n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d2n OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2d2n RCSB], [http://www.ebi.ac.uk/pdbsum/2d2n 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=2d2n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d2n OCA], [http://pdbe.org/2d2n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2d2n RCSB], [http://www.ebi.ac.uk/pdbsum/2d2n PDBsum]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/GLBB_OLIMA GLBB_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [[http://www.uniprot.org/uniprot/GLBC_OLIMA GLBC_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [[http://www.uniprot.org/uniprot/GLB5_OLIMA GLB5_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites.
+[[http://www.uniprot.org/uniprot/GLBB1_OLIMA GLBB1_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and sulfide simultaneously and reversibly at two different sites. [[http://www.uniprot.org/uniprot/GLBA1_OLIMA GLBA1_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [[http://www.uniprot.org/uniprot/GLBB2_OLIMA GLBB2_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites. [[http://www.uniprot.org/uniprot/GLBA2_OLIMA GLBA2_OLIMA]] The extracellular giant hemoglobin is able to bind and transport oxygen and hydrosulfide simultaneously and reversibly at two different sites.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 27: / Line 27: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2d2n" style="background-color:#fffaf0;"></div>
 ==See Also==

2d2n

From Proteopedia

Revision as of 02:58, 10 September 2015

Structure of an extracellular giant hemoglobin of the gutless beard worm Oligobrachia mashikoi

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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