1dli
From Proteopedia
| Line 4: | Line 4: | ||
|PDB= 1dli |SIZE=350|CAPTION= <scene name='initialview01'>1dli</scene>, resolution 2.31Å | |PDB= 1dli |SIZE=350|CAPTION= <scene name='initialview01'>1dli</scene>, resolution 2.31Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=UDX:URIDINE-5 | + | |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=UDX:URIDINE-5'-DIPHOSPHATE-XYLOPYRANOSE'>UDX</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> |
|ACTIVITY= [http://en.wikipedia.org/wiki/UDP-glucose_6-dehydrogenase UDP-glucose 6-dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.22 1.1.1.22] | |ACTIVITY= [http://en.wikipedia.org/wiki/UDP-glucose_6-dehydrogenase UDP-glucose 6-dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.22 1.1.1.22] | ||
|GENE= | |GENE= | ||
| Line 36: | Line 36: | ||
[[Category: ternary complex]] | [[Category: ternary complex]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 11:31:41 2008'' |
Revision as of 09:31, 23 March 2008
| |||||||
| , resolution 2.31Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , and | ||||||
| Activity: | UDP-glucose 6-dehydrogenase, with EC number 1.1.1.22 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
THE FIRST STRUCTURE OF UDP-GLUCOSE DEHYDROGENASE (UDPGDH) REVEALS THE CATALYTIC RESIDUES NECESSARY FOR THE TWO-FOLD OXIDATION
Overview
Bacterial UDP-glucose dehydrogenase (UDPGlcDH) is essential for formation of the antiphagocytic capsule that protects many virulent bacteria such as Streptococcus pyogenes andStreptococcus pneumoniae type 3 from the host's immune system. We have determined the X-ray structures of both native and Cys260Ser UDPGlcDH from S. pyogenes (74% similarity to S. pneumoniae) in ternary complexes with UDP-xylose/NAD(+) and UDP-glucuronic acid/NAD(H), respectively. The 402 residue homodimeric UDPGlcDH is composed of an N-terminal NAD(+) dinucleotide binding domain and a C-terminal UDP-sugar binding domain connected by a long (48 A) central alpha-helix. The first 290 residues of UDPGlcDH share structural homology with 6-phosphogluconate dehydrogenase, including conservation of an active site lysine and asparagine that are implicated in the enzyme mechanism. Also proposed to participate in the catalytic mechanism are a threonine and a glutamate that hydrogen bond to a conserved active site water molecule suitably positioned for general acid/base catalysis.
About this Structure
1DLI is a Single protein structure of sequence from Streptococcus pyogenes. Full crystallographic information is available from OCA.
Reference
The first structure of UDP-glucose dehydrogenase reveals the catalytic residues necessary for the two-fold oxidation., Campbell RE, Mosimann SC, van De Rijn I, Tanner ME, Strynadka NC, Biochemistry. 2000 Jun 13;39(23):7012-23. PMID:10841783
Page seeded by OCA on Sun Mar 23 11:31:41 2008
