2hpa

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{{STRUCTURE_2hpa| PDB=2hpa | SCENE= }}
{{STRUCTURE_2hpa| PDB=2hpa | SCENE= }}
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'''STRUCTURAL ORIGINS OF L(+)-TARTRATE INHIBITION OF HUMAN PROSTATIC ACID PHOSPHATASE'''
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===STRUCTURAL ORIGINS OF L(+)-TARTRATE INHIBITION OF HUMAN PROSTATIC ACID PHOSPHATASE===
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==Overview==
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Acid phosphatase activity in the blood serum is usually separated into tartrate-resistant and tartrate-refractory, which is reported as the prostatic acid phosphatase level. Human prostatic acid phosphatase crystals soaked in N-propyl-L-tartramate were used to collect x-ray diffraction data to 2.9 A resolution under cryogenic conditions. Positive difference electron density, corresponding to the inhibitor, was found. The quality of the electron density maps clearly shows the orientation of the carboxylate and N-propyl-substituted amide groups. The hydroxyl group attached to C3 forms two crucial hydrogen bonds with Arg-79 and His-257. Previous crystallographic studies compiled on the tartrate-rat prostatic acid phosphatase binary complex (Lindqvist, Y., Schneider, G., and Vihko, P. (1993) J. Biol. Chem. 268, 20744-20746) erroneously positioned D-tartrate into the active site. Modeling studies have shown that the C3 hydroxyl group on the D(-)-stereoisomer of tartrate, which does not significantly inhibit prostatic acid phosphatase, does not form strong hydrogen bonds with Arg-79 or His-257. The structure of human prostatic acid phosphatase, noncovalently bound in N-propyl-L-tartramate, is used to develop inhibitors with higher specificity and potency than L(+)-tartrate.
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==About this Structure==
==About this Structure==
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[[Category: Acid phosphatase]]
[[Category: Acid phosphatase]]
[[Category: N-propyltartramate]]
[[Category: N-propyltartramate]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 14:58:23 2008''

Revision as of 11:58, 28 July 2008

Image:2hpa.png

Template:STRUCTURE 2hpa

STRUCTURAL ORIGINS OF L(+)-TARTRATE INHIBITION OF HUMAN PROSTATIC ACID PHOSPHATASE

Template:ABSTRACT PUBMED 9804805

About this Structure

2HPA is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural origins of L(+)-tartrate inhibition of human prostatic acid phosphatase., LaCount MW, Handy G, Lebioda L, J Biol Chem. 1998 Nov 13;273(46):30406-9. PMID:9804805

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