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1ux9

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Revision as of 07:38, 28 March 2018

Mapping protein matrix cavities in human cytoglobin through Xe atom binding: a crystallographic investigation

Structural highlights

1ux9 is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	1umo, 1urv, 1ury, 1ut0
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CYGB_HUMAN] May have a protective function during conditions of oxidative stress. May be involved in intracellular oxygen storage or transfer.

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

Cytoglobin is the fourth recognized globin type, almost ubiquitously distributed in human tissues; its function is still poorly understood. Cytoglobin displays a core region of about 150 residues, structurally related to hemoglobin and myoglobin, and two extra segments, about 20 residues each, at the N- and C-termini. The core region hosts a large apolar cavity, held to provide a ligand diffusion pathway to/from the heme, and/or ligand temporary docking sites. Here we report the crystal structure (2.4A resolution, R-factor 19.1%) of a human cytoglobin mutant bearing the CysB2(38) --> Ser and CysE9(83) --> Ser substitutions (CYGB*), treated under pressurized xenon. Three Xe atoms bind to the heme distal site region of CYGB* mapping the protein matrix apolar cavity. Despite the conserved globin fold, the cavity found in CYGB* is structured differently from those recognized to play a functional role in myoglobin, neuroglobin, truncated hemoglobins, and Cerebratulus lacteus mini-hemoglobin.

Mapping protein matrix cavities in human cytoglobin through Xe atom binding.,de Sanctis D, Dewilde S, Pesce A, Moens L, Ascenzi P, Hankeln T, Burmester T, Bolognesi M Biochem Biophys Res Commun. 2004 Apr 16;316(4):1217-21. PMID:15044115^[1]

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

References

↑ de Sanctis D, Dewilde S, Pesce A, Moens L, Ascenzi P, Hankeln T, Burmester T, Bolognesi M. Mapping protein matrix cavities in human cytoglobin through Xe atom binding. Biochem Biophys Res Commun. 2004 Apr 16;316(4):1217-21. PMID:15044115 doi:http://dx.doi.org/10.1016/j.bbrc.2004.03.007

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/1ux9"

@@ Line 1: / Line 1: @@
-==MAPPING PROTEIN MATRIX CAVITIES IN HUMAN CYTOGLOBIN THROUGH XE ATOM BINDING: A CRYSTALLOGRAPHIC INVESTIGATION==
+==Mapping protein matrix cavities in human cytoglobin through Xe atom binding: a crystallographic investigation==
 <StructureSection load='1ux9' size='340' side='right' caption='[[1ux9]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
 == Structural highlights ==
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FC6:HEXACYANOFERRATE(3-)'>FC6</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=XE:XENON'>XE</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1umo|1umo]], [[1urv|1urv]], [[1ury|1ury]], [[1ut0|1ut0]]</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=1ux9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ux9 OCA], [http://pdbe.org/1ux9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ux9 RCSB], [http://www.ebi.ac.uk/pdbsum/1ux9 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=1ux9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ux9 OCA], [http://pdbe.org/1ux9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ux9 RCSB], [http://www.ebi.ac.uk/pdbsum/1ux9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ux9 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ux/1ux9_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ux/1ux9_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 28: / Line 29: @@
 </div>
 <div class="pdbe-citations 1ux9" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Cytoglobin|Cytoglobin]]
 == References ==
 <references/>

1ux9

From Proteopedia

Revision as of 07:38, 28 March 2018

Mapping protein matrix cavities in human cytoglobin through Xe atom binding: a crystallographic investigation

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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