View source for 3d4x


==Crystal structure determination of cat (Felis silvestris catus) hemoglobin at 2.2 angstrom resolution==
<StructureSection load='3d4x' size='340' side='right'caption='[[3d4x]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3d4x]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Felis_silvestris_catus Felis silvestris catus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3D4X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3D4X FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2qu0|2qu0]], [[2ri4|2ri4]], [[3cy5|3cy5]], [[3d1a|3d1a]]</div></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3d4x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d4x OCA], [https://pdbe.org/3d4x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3d4x RCSB], [https://www.ebi.ac.uk/pdbsum/3d4x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3d4x ProSAT]</span></td></tr>
</table>
== Function ==
[[https://www.uniprot.org/uniprot/HBA_FELCA HBA_FELCA]] Involved in oxygen transport from the lung to the various peripheral tissues. [[https://www.uniprot.org/uniprot/HBB_FELCA HBB_FELCA]] Involved in oxygen transport from the lung to the various peripheral tissues. 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d4/3d4x_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3d4x ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Hemoglobin is a tetrameric, iron-containing metalloprotein, which plays a vital role in the transportation of oxygen from lungs to tissues and carbon dioxide back to lungs. Though good amount of work has already been done on hemoglobins, the scarcity of data on three dimensional structures pertaining to low oxygen affinity hemoglobins from mammalian species, motivated our group to work on this problem specifically. Herein, we report the preliminary crystallographic analysis of buffalo hemoglobin, which belongs to low oxygen affinity species. The buffalo blood was collected, purified by anion exchange chromatography and crystallized with PEG 3350 using 50mM phosphate buffer at pH 6.7 as a precipitant by hanging drop vapor diffusion method. Data collection was carried out using mar345dtb image plate detector system. Buffalo hemoglobin crystallizes in orthorhombic space group P2(1)2(1)2(1) with one whole biological molecule (alpha2beta2) in the asymmetric unit with cell dimensions a=63.064A, b=74.677A, c=110.224A.

Preliminary Crystallographic Study of Hemoglobin from Buffalo (Bubalus bubalis): A Low Oxygen Affinity Species.,Balasubramanian M, Moorthy PS, Neelagandan K, Ponnuswamy MN Protein Pept Lett. 2009;16(2):213-5. PMID:19200047<ref>PMID:19200047</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3d4x" style="background-color:#fffaf0;"></div>

==See Also==
*[[Hemoglobin 3D structures|Hemoglobin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Felis silvestris catus]]
[[Category: Large Structures]]
[[Category: Balasubramanian, M]]
[[Category: Moorthy, P Sathya]]
[[Category: Neelagandan, K]]
[[Category: Ponnuswamy, M N]]
[[Category: Allosteric mechanism]]
[[Category: Heme]]
[[Category: Hemoglobin]]
[[Category: Iron]]
[[Category: Low oxygen affinity]]
[[Category: Monoclinic]]
[[Category: Oxygen storage]]
[[Category: Oxygen transport]]
[[Category: Transport]]