2h2a: Difference between revisions
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
|PDB= 2h2a |SIZE=350|CAPTION= <scene name='initialview01'>2h2a</scene>, resolution 2.10Å | |PDB= 2h2a |SIZE=350|CAPTION= <scene name='initialview01'>2h2a</scene>, resolution 2.10Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DND:NICOTINIC+ACID+ADENINE+DINUCLEOTIDE'>DND</scene> | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CSX:S-OXY+CYSTEINE'>CSX</scene>, <scene name='pdbligand=DND:NICOTINIC+ACID+ADENINE+DINUCLEOTIDE'>DND</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/Nicotinate-nucleotide_adenylyltransferase Nicotinate-nucleotide adenylyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.18 2.7.7.18] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Nicotinate-nucleotide_adenylyltransferase Nicotinate-nucleotide adenylyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.18 2.7.7.18] </span> | ||
|GENE= nadD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | |GENE= nadD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | ||
|DOMAIN= | |||
|RELATEDENTRY=[[2h29|2H29]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2h2a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h2a OCA], [http://www.ebi.ac.uk/pdbsum/2h2a PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2h2a RCSB]</span> | |||
}} | }} | ||
| Line 24: | Line 27: | ||
[[Category: Staphylococcus aureus]] | [[Category: Staphylococcus aureus]] | ||
[[Category: Han, S.]] | [[Category: Han, S.]] | ||
[[Category: nadd]] | [[Category: nadd]] | ||
[[Category: namnat]] | [[Category: namnat]] | ||
[[Category: nmnat]] | [[Category: nmnat]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:24:28 2008'' | ||
Revision as of 03:24, 31 March 2008
| |||||||
| , resolution 2.10Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , | ||||||
| Gene: | nadD (Staphylococcus aureus) | ||||||
| Activity: | Nicotinate-nucleotide adenylyltransferase, with EC number 2.7.7.18 | ||||||
| Related: | 2H29
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of Nicotinic acid mononucleotide adenylyltransferase from Staphylococcus aureus: product bound form 2
OverviewOverview
Bacterial nicotinic acid mononucleotide adenylyltransferase (NaMNAT; EC 2.7.7.18) encoded by the nadD gene, is essential for cell survival and is thus an attractive target for developing new antibacterial agents. The NaMNAT catalyzes the transfer of an adenylyl group of ATP to nicotinic acid mononucleotide (NaMN) to form nicotinic acid dinucleotide (NaAD). Two independently derived, high-resolution structures of Staphylococcus aureus NaMNAT-NaAD complexes establish the conserved features of the core dinucleotide-binding fold with other adenylyltransferases from bacteria to human despite a limited sequence conservation. The crystal structures reveal that the nicotinate carboxylates of NaAD are recognized by interaction with the main-chain amides of Thr85 and Tyr117, a positive helix dipole and two bridged-water molecules. Unlike other bacterial adenylyltransferases, where a partially conserved histidine residue interacts with the nicotinate ring, the Leu44 side-chain interacts with the nicotinate ring by van der Waals contact. Importantly, the S. aureus NaMNAT represents a distinct adenylyltransferase subfamily identifiable in part by common features of dimerization and substrate recognition in the loop connecting beta5 to beta6 (residues 132-146) and the additional beta6 strand. The unique beta6 strand helps orient the residues in the loop connecting beta5 to beta6 for substrate/product recognition and allows the beta7 strand structural flexibility to make key dimer interface interactions. Taken together, these structural results provide a molecular basis for understanding the coupled activity and recognition specificity for S. aureus NaMNAT and for rational design of selective inhibitors.
About this StructureAbout this Structure
2H2A is a Single protein structure of sequence from Staphylococcus aureus. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of nicotinic acid mononucleotide adenylyltransferase from Staphyloccocus aureus: structural basis for NaAD interaction in functional dimer., Han S, Forman MD, Loulakis P, Rosner MH, Xie Z, Wang H, Danley DE, Yuan W, Schafer J, Xu Z, J Mol Biol. 2006 Jul 21;360(4):814-25. Epub 2006 Jun 6. PMID:16784754
Page seeded by OCA on Mon Mar 31 03:24:28 2008