ISDA

Deposition Date 2004-07-02

Release Date 2005-09-20

Last Version Date 2024-11-13

Entry Detail

PDB ID:

1TX7

Keywords:

HYDROLASE

Title:

Bovine Trypsin complexed with p-amidinophenylmethylphosphinic acid (AMPA)

Biological Source:

Source Organism:

Bos taurus (Taxon ID: 9913)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.75 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Trypsinogen
Gene (Uniprot):PRSS1
Chain IDs:A
Chain Length:223
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P00760 Pfam ID:PF00089 EC:3.4.21.4

Ligand Molecules

4CM

Primary Citation

An oxyanion-hole selective serine protease inhibitor in complex with trypsin.

Cui, J, Marankan, F, Fu, W, Crich, D, Mesecar, A, Johnson, M.E.Show

Bioorg.Med.Chem. 10 41 46 (2002)

PMID: 11738605 DOI: 10.1016/S0968-0896(01)00259-0

Abstact

p-amidinophenylmethylphosphinic acid (AMPA) was designed, synthesized and crystallized in complex with trypsin to study interactions with the oxyanion hole at the S1 site. In comparison to benzamidine, AMPA shows improved activity, which the crystal structure demonstrates to result from hydrogen bonds between the negatively charged phosphinic acid group and the catalytic residues at the oxyanion hole.

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Protein

Chemical

Disease

Primary Citation of related structures