1y3i

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|PDB= 1y3i |SIZE=350|CAPTION= <scene name='initialview01'>1y3i</scene>, resolution 2.60&Aring;
|PDB= 1y3i |SIZE=350|CAPTION= <scene name='initialview01'>1y3i</scene>, resolution 2.60&Aring;
|SITE=
|SITE=
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|LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
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|LIGAND= <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
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|ACTIVITY= [http://en.wikipedia.org/wiki/NAD(+)_kinase NAD(+) kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.23 2.7.1.23]
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/NAD(+)_kinase NAD(+) kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.23 2.7.1.23] </span>
|GENE= pPnk ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 Mycobacterium tuberculosis])
|GENE= pPnk ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 Mycobacterium tuberculosis])
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|DOMAIN=
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|RELATEDENTRY=[[1y3h|1Y3H]]
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1y3i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y3i OCA], [http://www.ebi.ac.uk/pdbsum/1y3i PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1y3i RCSB]</span>
}}
}}
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[[Category: Murata, K.]]
[[Category: Murata, K.]]
[[Category: Yamasaki, M.]]
[[Category: Yamasaki, M.]]
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[[Category: GOL]]
 
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[[Category: NAD]]
 
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[[Category: SO4]]
 
[[Category: atp]]
[[Category: atp]]
[[Category: mycobacterium tuberculosis]]
[[Category: mycobacterium tuberculosis]]
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[[Category: polyphosphate]]
[[Category: polyphosphate]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:18:02 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:58:18 2008''

Revision as of 21:58, 30 March 2008

Image:1y3i.gif


PDB ID 1y3i

Drag the structure with the mouse to rotate
, resolution 2.60Å
Ligands: , ,
Gene: pPnk (Mycobacterium tuberculosis)
Activity: NAD(+) kinase, with EC number 2.7.1.23
Related: 1Y3H


Resources: FirstGlance, OCA, PDBsum, RCSB
Coordinates: save as pdb, mmCIF, xml



Crystal Structure of Mycobacterium tuberculosis NAD kinase-NAD complex


Overview

NAD kinase is a key enzyme in NADP biosynthesis. We solved the crystal structure of polyphosphate/ATP-NAD kinase from Mycobacterium tuberculosis (Ppnk) complexed with NAD (Ppnk-NAD) at 2.6A resolution using apo-Ppnk structure solved in this work, and revealed the details of the structure and NAD-binding site. Superimposition of tertiary structures of apo-Ppnk and Ppnk-NAD demonstrated a substantial conformational difference in a loop (Ppnk-flexible loop). As a quaternary structure, these Ppnk structures exhibited tetramer as in solution condition. Notably, the Ppnk-flexible loop was involved in the intersubunit contact and probably related to the NAD-binding of the other subunit. Furthermore, the two residues (Asp189, His226) substantially contributed to creating NAD-binding site on the other subunit. The two residues and the residues involved in NAD-binding were conserved. However, residues corresponding to the Ppnk-flexible loop were not conserved, making us to speculate that the Ppnk-flexible loop may be Ppnk-specific.

About this Structure

1Y3I is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

NAD-binding mode and the significance of intersubunit contact revealed by the crystal structure of Mycobacterium tuberculosis NAD kinase-NAD complex., Mori S, Yamasaki M, Maruyama Y, Momma K, Kawai S, Hashimoto W, Mikami B, Murata K, Biochem Biophys Res Commun. 2005 Feb 11;327(2):500-8. PMID:15629142

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