1c8t: Difference between revisions
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'''HUMAN STROMELYSIN-1 (E202Q) CATALYTIC DOMAIN COMPLEXED WITH RO-26-2812''' | {{Structure | ||
|PDB= 1c8t |SIZE=350|CAPTION= <scene name='initialview01'>1c8t</scene>, resolution 2.60Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> and <scene name='pdbligand=TR1:2-(2-{2-[(BIPHENYL-4-YLMETHYL)-AMINO]-3-MERCAPTO-PENTANOYLAMINO}-ACETYLAMINO)-3-METHYL-BUTYRIC ACID METHYL ESTER'>TR1</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Stromelysin_1 Stromelysin 1], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.24.17 3.4.24.17] | |||
|GENE= | |||
}} | |||
'''HUMAN STROMELYSIN-1 (E202Q) CATALYTIC DOMAIN COMPLEXED WITH RO-26-2812''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1C8T is a [ | 1C8T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C8T OCA]. | ||
==Reference== | ==Reference== | ||
Expression, characterization and structure determination of an active site mutant (Glu202-Gln) of mini-stromelysin-1., Steele DL, El-Kabbani O, Dunten P, Windsor LJ, Kammlott RU, Crowther RL, Michoud C, Engler JA, Birktoft JJ, Protein Eng. 2000 Jun;13(6):397-405. PMID:[http:// | Expression, characterization and structure determination of an active site mutant (Glu202-Gln) of mini-stromelysin-1., Steele DL, El-Kabbani O, Dunten P, Windsor LJ, Kammlott RU, Crowther RL, Michoud C, Engler JA, Birktoft JJ, Protein Eng. 2000 Jun;13(6):397-405. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10877850 10877850] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: protein-inhibitor complex]] | [[Category: protein-inhibitor complex]] | ||
''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 10:21:20 2008'' | ||
Revision as of 11:21, 20 March 2008
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| , resolution 2.60Å | |||||||
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| Ligands: | , and | ||||||
| Activity: | Stromelysin 1, with EC number 3.4.24.17 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
HUMAN STROMELYSIN-1 (E202Q) CATALYTIC DOMAIN COMPLEXED WITH RO-26-2812
OverviewOverview
Human stromelysin-1 is a member of the matrix metalloproteinase (MMP) family of enzymes. The active site glutamic acid of the MMPs is conserved throughout the family and plays a pivotal role in the catalytic mechanism. The structural and functional consequences of a glutamate to glutamine substitution in the active site of stromelysin-1 were investigated in this study. In contrast to the wild-type enzyme, the glutamine-substituted mutant was not active in a zymogram assay where gelatin was the substrate, was not activated by organomercurials and showed no activity against a peptide substrate. The glutamine-substituted mutant did, however, bind to TIMP-1, the tissue inhibitor of metalloproteinases, after cleavage of the propeptide with trypsin. A second construct containing the glutamine substitution but lacking the propeptide was also inactive in the proteolysis assays and capable of TIMP-1 binding. X-ray structures of the wild-type and mutant proteins complexed with the propeptide-based inhibitor Ro-26-2812 were solved and in both structures the inhibitor binds in an orientation the reverse of that of the propeptide in the pro-form of the enzyme. The inhibitor makes no specific interactions with the active site glutamate and a comparison of the wild-type and mutant structures revealed no major structural changes resulting from the glutamate to glutamine substitution.
DiseaseDisease
Known diseases associated with this structure: Coronary heart disease, susceptibility to OMIM:[185250]
About this StructureAbout this Structure
1C8T is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
ReferenceReference
Expression, characterization and structure determination of an active site mutant (Glu202-Gln) of mini-stromelysin-1., Steele DL, El-Kabbani O, Dunten P, Windsor LJ, Kammlott RU, Crowther RL, Michoud C, Engler JA, Birktoft JJ, Protein Eng. 2000 Jun;13(6):397-405. PMID:10877850
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