2HLN: L-asparaginase From Erwinia Carotovora In Complex With Glutamic Acid

Citation:
Abstract
The crystal structures of Erwinia carotovora L-asparaginase complexed with L-aspartate and L-glutamate were determined at 1.9 and 2.2 A, respectively, using the molecular-replacement method and were refined to R factors of about 21% in both cases. The positions of the ligands in the active site were located. A comparison of the new structures with the known structures of Escherichia coli L-asparaginase and Er. chrysanthemi L-asparaginase was performed. It was found that the arrangement of the ligands practically coincides in all three enzymes. The peculiarities of the quaternary structure of the enzyme, the possible role of water molecules in the enzyme action and the conformational changes during the catalyzed reaction are discussed.
PDB ID: 2HLNDownload
MMDB ID: 47393
PDB Deposition Date: 2006/7/8
Updated in MMDB: 2007/10
Experimental Method:
x-ray diffraction
Resolution: 2.2  Å
Source Organism:
Similar Structures:
Biological Unit for 2HLN: tetrameric; determined by author and by software (PISA)
Molecular Components in 2HLN
Label Count Molecule
Proteins (4 molecules)
4
L-asparaginase
Molecule annotation
Chemicals (8 molecules)
1
4
2
4
* Click molecule labels to explore molecular sequence information.

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