1y3h

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[[Image:1y3h.gif|left|200px]]<br /><applet load="1y3h" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1y3h.gif|left|200px]]
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caption="1y3h, resolution 2.80&Aring;" />
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'''Crystal Structure of Inorganic Polyphosphate/ATP-NAD kinase from Mycobacterium tuberculosis'''<br />
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{{Structure
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|PDB= 1y3h |SIZE=350|CAPTION= <scene name='initialview01'>1y3h</scene>, resolution 2.80&Aring;
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|SITE=
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|LIGAND=
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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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|GENE= Ppnk ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 Mycobacterium tuberculosis])
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}}
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'''Crystal Structure of Inorganic Polyphosphate/ATP-NAD kinase from Mycobacterium tuberculosis'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1Y3H is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Active as [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] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y3H OCA].
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1Y3H is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y3H OCA].
==Reference==
==Reference==
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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:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15629142 15629142]
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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:[http://www.ncbi.nlm.nih.gov/pubmed/15629142 15629142]
[[Category: Mycobacterium tuberculosis]]
[[Category: Mycobacterium tuberculosis]]
[[Category: NAD(+) kinase]]
[[Category: NAD(+) kinase]]
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[[Category: polyphosphate]]
[[Category: polyphosphate]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:01:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:18:00 2008''

Revision as of 13:18, 20 March 2008

Image:1y3h.gif


PDB ID 1y3h

Drag the structure with the mouse to rotate
, resolution 2.80Å
Gene: Ppnk (Mycobacterium tuberculosis)
Activity: NAD(+) kinase, with EC number 2.7.1.23
Coordinates: save as pdb, mmCIF, xml



Crystal Structure of Inorganic Polyphosphate/ATP-NAD kinase from Mycobacterium tuberculosis


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

1Y3H 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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