1S3T: Borate Inhibited Bacillus Pasteurii Urease Crystal Structure

Citation:
Abstract
The structure of the complex of urease, a Ni-containing metalloenzyme, with boric acid was determined at 2.10 A resolution. The complex shows the unprecedented binding mode of the competitive inhibitor to the dinuclear metal center, with the B(OH)3 molecule bridging the Ni ions and leaving in place the bridging hydroxide. Boric acid can be considered a substrate analogue of urea, and the structure supports the proposal that the Ni-bridging hydroxide acts as the nucleophile in the enzymatic process of urea hydrolysis.
PDB ID: 1S3TDownload
MMDB ID: 26994
PDB Deposition Date: 2004/1/14
Updated in MMDB: 2007/10
Experimental Method:
x-ray diffraction
Resolution: 2.1  Å
Source Organism:
Similar Structures:
Biological Unit for 1S3T: nonameric; determined by author and by software (PISA,PQS)
Molecular Components in 1S3T
Label Count Molecule
Proteins (9 molecules)
3
Urease Gamma Subunit
Molecule annotation
3
Urease Beta Subunit
Molecule annotation
3
Urease Alpha Subunit
Molecule annotation
Chemicals (12 molecules)
1
6
2
3
3
3
* Click molecule labels to explore molecular sequence information.

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