1kku
From Proteopedia
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| - | [[Image:1kku.jpg|left|200px]] | + | [[Image:1kku.jpg|left|200px]] |
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| - | '''Crystal structure of nuclear human nicotinamide mononucleotide adenylyltransferase''' | + | {{Structure |
| + | |PDB= 1kku |SIZE=350|CAPTION= <scene name='initialview01'>1kku</scene>, resolution 2.5Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Nicotinamide-nucleotide_adenylyltransferase Nicotinamide-nucleotide adenylyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.1 2.7.7.1] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Crystal structure of nuclear human nicotinamide mononucleotide adenylyltransferase''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1KKU is a [ | + | 1KKU is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KKU OCA]. |
==Reference== | ==Reference== | ||
| - | Structure of human NMN adenylyltransferase. A key nuclear enzyme for NAD homeostasis., Garavaglia S, D'Angelo I, Emanuelli M, Carnevali F, Pierella F, Magni G, Rizzi M, J Biol Chem. 2002 Mar 8;277(10):8524-30. Epub 2001 Dec 19. PMID:[http:// | + | Structure of human NMN adenylyltransferase. A key nuclear enzyme for NAD homeostasis., Garavaglia S, D'Angelo I, Emanuelli M, Carnevali F, Pierella F, Magni G, Rizzi M, J Biol Chem. 2002 Mar 8;277(10):8524-30. Epub 2001 Dec 19. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11751893 11751893] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Nicotinamide-nucleotide adenylyltransferase]] | [[Category: Nicotinamide-nucleotide adenylyltransferase]] | ||
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[[Category: alpha/beta structure - rossmann fold]] | [[Category: alpha/beta structure - rossmann fold]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:18:47 2008'' |
Revision as of 10:18, 20 March 2008
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| , resolution 2.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Activity: | Nicotinamide-nucleotide adenylyltransferase, with EC number 2.7.7.1 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of nuclear human nicotinamide mononucleotide adenylyltransferase
Overview
Nicotinamide mononucleotide adenylyltransferase (NMNAT), a member of the nucleotidyltransferase alpha/beta-phosphodiesterases superfamily, catalyzes a universal step (NMN + ATP = NAD + PP(i)) in NAD biosynthesis. Localized within the nucleus, the activity of the human enzyme is greatly altered in tumor cells, rendering it a promising target for cancer chemotherapy. By using a combination of single isomorphous replacement and density modification techniques, the human NMNAT structure was solved by x-ray crystallography to a 2.5-A resolution, revealing a hexamer that is composed of alpha/beta-topology subunits. The active site topology of the enzyme, analyzed through homology modeling and structural comparison with other NMNATs, yielded convincing evidence for a substrate-induced conformational change. We also observed remarkable structural conservation in the ATP-recognition motifs GXXXPX(T/H)XXH and SXTXXR, which we take to be the universal signature for NMNATs. Structural comparison of human and prokaryotic NMNATs may also lead to the rational design of highly selective antimicrobial drugs.
About this Structure
1KKU is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of human NMN adenylyltransferase. A key nuclear enzyme for NAD homeostasis., Garavaglia S, D'Angelo I, Emanuelli M, Carnevali F, Pierella F, Magni G, Rizzi M, J Biol Chem. 2002 Mar 8;277(10):8524-30. Epub 2001 Dec 19. PMID:11751893
Page seeded by OCA on Thu Mar 20 12:18:47 2008
