1may

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
[[Image:1may.gif|left|200px]]
[[Image:1may.gif|left|200px]]
-
{{Structure
+
<!--
-
|PDB= 1may |SIZE=350|CAPTION= <scene name='initialview01'>1may</scene>, resolution 1.8&Aring;
+
The line below this paragraph, containing "STRUCTURE_1may", creates the "Structure Box" on the page.
-
|SITE=
+
You may change the PDB parameter (which sets the PDB file loaded into the applet)
-
|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=ZAP:[N-(BENZYLOXYCARBONYL)AMINO](4-AMIDINOPHENYL)METHANE-PHOSPHONATE'>ZAP</scene>
+
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-
|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Trypsin Trypsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.4 3.4.21.4] </span>
+
or leave the SCENE parameter empty for the default display.
-
|GENE=
+
-->
-
|DOMAIN=
+
{{STRUCTURE_1may| PDB=1may | SCENE= }}
-
|RELATEDENTRY=
+
-
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1may FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1may OCA], [http://www.ebi.ac.uk/pdbsum/1may PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1may RCSB]</span>
+
-
}}
+
'''BETA-TRYPSIN PHOSPHONATE INHIBITED'''
'''BETA-TRYPSIN PHOSPHONATE INHIBITED'''
Line 35: Line 32:
[[Category: Suddath, F.]]
[[Category: Suddath, F.]]
[[Category: Williams, L.]]
[[Category: Williams, L.]]
-
[[Category: digestion]]
+
[[Category: Digestion]]
-
[[Category: hydrolase]]
+
[[Category: Hydrolase]]
-
[[Category: pancrea]]
+
[[Category: Pancrea]]
-
[[Category: serine protease]]
+
[[Category: Serine protease]]
-
[[Category: zymogen]]
+
[[Category: Zymogen]]
-
 
+
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:50:25 2008''
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:13:46 2008''
+

Revision as of 21:50, 2 May 2008

Image:1may.gif

Template:STRUCTURE 1may

BETA-TRYPSIN PHOSPHONATE INHIBITED


Overview

X-ray structures of trypsin from bovine pancreas inactivated by diphenyl [N-(benzyloxycarbonyl)amino](4-amidinophenyl)methanephosphonate [Z-(4-AmPhGly)P(OPh)2] were determined at 113 and 293 K to 1.8 angstrom resolution and refined to R factors of 0.211 (113 K) and 0. 178 (293 K). The structures reveal a tetrahedral phosphorus covalently bonded to the O gamma of the active site serine. Covalent bond formation is accompanied by the loss of both phenoxy groups. The D-stereoisomer of Z-(4-AmPhGly)P-(OPh)2 is not observed in the complex. The L-stereoisomer of the inhibitor forms contacts with several residues in the trypsin active site. One of the phosphonate oxygens is inserted into the oxyanion hole and forms hydrogen bonds to the amides of Gly193, Asp194, and Ser195. The second phosphonate oxygen forms hydrogen bonds to N epsilon 2 of His 57. The p-amidinophenylglycine moiety binds into the trypsin primary specificity pocket, interacting with Asp189. The amide forms a hydrogen bond to the carbonyl oxygen atom of Ser214. The inhibitor moiety, from the 113 K structure of trypsin inactivated by the reaction product of Z-(4-AmPhGly)P(OPh)2, was docked into human thrombin [Bode, W., Mayr, I., Baumann, U., Huber, R., Stone, S. R., & Hofsteenge, J. (1989) EMBO J. 8, 3467-3475] and energy minimized. The inhibitor fits well into the thrombin active site, forming favorable contacts similar to those in the trypsin complex with no bad contacts.

About this Structure

1MAY is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Inhibition of trypsin and thrombin by amino(4-amidinophenyl)methanephosphonate diphenyl ester derivatives: X-ray structures and molecular models., Bertrand JA, Oleksyszyn J, Kam CM, Boduszek B, Presnell S, Plaskon RR, Suddath FL, Powers JC, Williams LD, Biochemistry. 1996 Mar 12;35(10):3147-55. PMID:8605148 Page seeded by OCA on Sat May 3 00:50:25 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1may"
Personal tools