This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


1l8g

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1l8g.jpg|left|200px]]
+
{{Seed}}
 +
[[Image:1l8g.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1l8g| PDB=1l8g | SCENE= }}
{{STRUCTURE_1l8g| PDB=1l8g | SCENE= }}
-
'''Crystal structure of PTP1B complexed with 7-(1,1-Dioxo-1H-benzo[d]isothiazol-3-yloxymethyl)-2-(oxalyl-amino)-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylic acid'''
+
===Crystal structure of PTP1B complexed with 7-(1,1-Dioxo-1H-benzo[d]isothiazol-3-yloxymethyl)-2-(oxalyl-amino)-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylic acid===
-
==Overview==
+
<!--
-
Utilizing structure-based design, we have previously demonstrated that it is possible to obtain selective inhibitors of protein-tyrosine phosphatase 1B (PTP1B). A basic nitrogen was introduced into a general PTP inhibitor to form a salt bridge to Asp48 in PTP1B and simultaneously cause repulsion in PTPs containing an asparagine in the equivalent position [Iversen, L. F., et al. (2000) J. Biol. Chem. 275, 10300-10307]. Further, we have recently demonstrated that Gly259 in PTP1B forms the bottom of a gateway that allows easy access to the active site for a broad range of substrates, while bulky residues in the same position in other PTPs cause steric hindrance and reduced substrate recognition capacity [Peters, G. H., et al. (2000) J. Biol. Chem. 275, 18201-18209]. The current study was undertaken to investigate the feasibility of structure-based design, utilizing these differences in accessibility to the active site among various PTPs. We show that a general, low-molecular weight PTP inhibitor can be developed into a highly selective inhibitor for PTP1B and TC-PTP by introducing a substituent, which is designed to address the region around residues 258 and 259. Detailed enzyme kinetic analysis with a set of wild-type and mutant PTPs, X-ray protein crystallography, and molecular modeling studies confirmed that selectivity for PTP1B and TC-PTP was achieved due to steric hindrance imposed by bulky position 259 residues in other PTPs.
+
The line below this paragraph, {{ABSTRACT_PUBMED_11732900}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 11732900 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_11732900}}
==About this Structure==
==About this Structure==
Line 37: Line 41:
[[Category: Peters, G H.]]
[[Category: Peters, G H.]]
[[Category: Protein-inhibitor]]
[[Category: Protein-inhibitor]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:39:44 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:56:32 2008''

Revision as of 08:56, 2 July 2008

Image:1l8g.png

Template:STRUCTURE 1l8g

Crystal structure of PTP1B complexed with 7-(1,1-Dioxo-1H-benzo[d]isothiazol-3-yloxymethyl)-2-(oxalyl-amino)-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylic acid

Template:ABSTRACT PUBMED 11732900

About this Structure

1L8G is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Steric hindrance as a basis for structure-based design of selective inhibitors of protein-tyrosine phosphatases., Iversen LF, Andersen HS, Moller KB, Olsen OH, Peters GH, Branner S, Mortensen SB, Hansen TK, Lau J, Ge Y, Holsworth DD, Newman MJ, Hundahl Moller NP, Biochemistry. 2001 Dec 11;40(49):14812-20. PMID:11732900

Page seeded by OCA on Wed Jul 2 11:56:32 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1l8g"
Personal tools