1ytj
From Proteopedia
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|PDB= 1ytj |SIZE=350|CAPTION= <scene name='initialview01'>1ytj</scene>, resolution 2.5Å | |PDB= 1ytj |SIZE=350|CAPTION= <scene name='initialview01'>1ytj</scene>, resolution 2.5Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= | + | |LIGAND= <scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=PPN:PARA-NITROPHENYLALANINE'>PPN</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/HIV-1_retropepsin HIV-1 retropepsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.16 3.4.23.16] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/HIV-1_retropepsin HIV-1 retropepsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.16 3.4.23.16] </span> |
|GENE= SIV(MAC)239 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | |GENE= SIV(MAC)239 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ytj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ytj OCA], [http://www.ebi.ac.uk/pdbsum/1ytj PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1ytj RCSB]</span> | ||
}} | }} | ||
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[[Category: Rose, R B.]] | [[Category: Rose, R B.]] | ||
[[Category: Stroud, R M.]] | [[Category: Stroud, R M.]] | ||
| - | [[Category: ) aid]] | ||
[[Category: aspartyl protease]] | [[Category: aspartyl protease]] | ||
| - | [[Category: complex (hydrolase/peptide]] | + | [[Category: complex (hydrolase/peptide,) aid]] |
[[Category: endonuclease]] | [[Category: endonuclease]] | ||
[[Category: hydrolase]] | [[Category: hydrolase]] | ||
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[[Category: rna-directed dna polymerase]] | [[Category: rna-directed dna polymerase]] | ||
| - | ''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 01:21:40 2008'' |
Revision as of 22:21, 30 March 2008
| |||||||
| , resolution 2.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | SIV(MAC)239 (Escherichia coli) | ||||||
| Activity: | HIV-1 retropepsin, with EC number 3.4.23.16 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
SIV PROTEASE CRYSTALLIZED WITH PEPTIDE PRODUCT
Overview
Strain is eliminated as a factor in hydrolysis of the scissile peptide bond by human immunodeficiency virus (HIV)-1 and simian immunodeficiency virus (SIV), based on the first eight complexes of products of hydrolysis with the enzymes. The carboxyl group generated at the scissile bond interacts with both catalytic aspartic acids. The structures directly suggest the interactions of the gemdiol intermediate with the active site. Based on the structures, the nucleophilic water is displaced stereospecifically by substrate binding toward one catalytic aspartic acid, while the scissile carbonyl becomes hydrogen bonded to the other catalytic aspartic acid in position for hydrolysis. Crystal structures for two N-terminal (P) products and two C-terminal (Q) products provide unambiguous density for the ligands at 2.2-2.6 A resolution and 17-21% R factors. The N-terminal product, Ac-S-L-N-F/, overlaps closely with the N-terminal sequences of peptidomimetic inhibitors bound to the protease. Comparison of the two C-terminal products, /F-L-E-K and /F(NO2)-E-A-Nle-S, indicates that the P2' residue is highly constrained, while the positioning of the P1' and P3' residues are sequence dependent.
About this Structure
1YTJ is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Three-dimensional structures of HIV-1 and SIV protease product complexes., Rose RB, Craik CS, Douglas NL, Stroud RM, Biochemistry. 1996 Oct 1;35(39):12933-44. PMID:8841139
Page seeded by OCA on Mon Mar 31 01:21:40 2008
