1gbe: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:1gbe.jpg|left|200px]] | [[Image:1gbe.jpg|left|200px]] | ||
'''ALPHA-LYTIC PROTEASE WITH MET 190 REPLACED BY ALA AND GLY 216 REPLACED BY LEU''' | {{Structure | ||
|PDB= 1gbe |SIZE=350|CAPTION= <scene name='initialview01'>1gbe</scene>, resolution 2.30Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Alpha-lytic_endopeptidase Alpha-lytic endopeptidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.12 3.4.21.12] | |||
|GENE= ALPHA-LYTIC PROTEASE PREPROENZ ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=69 Lysobacter enzymogenes]) | |||
}} | |||
'''ALPHA-LYTIC PROTEASE WITH MET 190 REPLACED BY ALA AND GLY 216 REPLACED BY LEU''' | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
1GBE is a [ | 1GBE is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Lysobacter_enzymogenes Lysobacter enzymogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GBE OCA]. | ||
==Reference== | ==Reference== | ||
Kinetic and structural characterization of mutations of glycine 216 in alpha-lytic protease: a new target for engineering substrate specificity., Mace JE, Agard DA, J Mol Biol. 1995 Dec 8;254(4):720-36. PMID:[http:// | Kinetic and structural characterization of mutations of glycine 216 in alpha-lytic protease: a new target for engineering substrate specificity., Mace JE, Agard DA, J Mol Biol. 1995 Dec 8;254(4):720-36. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7500345 7500345] | ||
[[Category: Alpha-lytic endopeptidase]] | [[Category: Alpha-lytic endopeptidase]] | ||
[[Category: Lysobacter enzymogenes]] | [[Category: Lysobacter enzymogenes]] | ||
| Line 19: | Line 28: | ||
[[Category: active-site mutation]] | [[Category: active-site mutation]] | ||
''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 11:20:52 2008'' | ||
Revision as of 12:20, 20 March 2008
| |||||||
| , resolution 2.30Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | ALPHA-LYTIC PROTEASE PREPROENZ (Lysobacter enzymogenes) | ||||||
| Activity: | Alpha-lytic endopeptidase, with EC number 3.4.21.12 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
ALPHA-LYTIC PROTEASE WITH MET 190 REPLACED BY ALA AND GLY 216 REPLACED BY LEU
OverviewOverview
Gly216 in the active site of the broadly specific MA190 mutant of alpha-lytic protease has been found to be remarkably tolerant of amino acid substitutions. Side-chains as large as Trp can be accommodated within the substrate-binding pocket without abolishing catalysis, and have major effects upon the substrate specificity of the enzyme. Kinetic characterization of eleven enzymatically active mutants against a panel of eight substrates clearly revealed the functional consequences of the substitutions at position 216. To understand better the structural basis for their altered specificity, the GA216 + MA190 and GL216 + MA190 mutants have been crystallized both with and without a representative series of peptide boronic acid transition-state analog inhibitors. An empirical description and non-parametric statistical analysis of structural variation among these enzyme: inhibitor complexes is presented. The roles of active site plasticity and dynamics in alpha-lytic protease function and substrate preference are also addressed. The results strongly suggest that substrate specificity determination in alpha-lytic protease is a distributed property of the active site and substrate molecule.
About this StructureAbout this Structure
1GBE is a Single protein structure of sequence from Lysobacter enzymogenes. Full crystallographic information is available from OCA.
ReferenceReference
Kinetic and structural characterization of mutations of glycine 216 in alpha-lytic protease: a new target for engineering substrate specificity., Mace JE, Agard DA, J Mol Biol. 1995 Dec 8;254(4):720-36. PMID:7500345
Page seeded by OCA on Thu Mar 20 11:20:52 2008