ISDA

Deposition Date 1989-04-24

Release Date 1990-04-15

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1P09

Keywords:

HYDROLASE (SERINE PROTEINASE)

Title:

STRUCTURAL PLASTICITY AS A DETERMINANT OF ENZYME SPECIFICITY. CREATING BROADLY SPECIFIC PROTEASES

Biological Source:

Source Organism:

Lysobacter enzymogenes (Taxon ID: 69)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.20 Å

R-Value Observed:

0.13

Space Group:

P 32 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:ALPHA-LYTIC PROTEASE
Gene (Uniprot):alpha-LP
Chain IDs:A
Chain Length:198
Number of Molecules:1
Biological Source:Lysobacter enzymogenes

UniProt ID:P00778 Pfam ID:PF00089 EC:3.4.21.12

Ligand Molecules

SO4

Primary Citation

Structural plasticity broadens the specificity of an engineered protease.

Bone, R, Silen, J.L, Agard, D.A, Bone, R, Frank, D, Kettner, C, Agard, D.A, Kettner, C.A, Bone, R, Agard, D.A, Bachovchin, W.W, Bone, R, Shenvi, A.B, Kettner, C.A, Agard, D.A, Fujinaga, M, Delbaere, L.T.J, Brayer, G.D, James, M.N.G, Brayer, G.D, Delbaere, L.T.J, James, M.N.G.Show

Nature 339 191 195 (1989)

PMID: 2716847 DOI: 10.1038/339191a0

Abstact

The substrate specificity of alpha-lytic protease has been changed dramatically, with a concomitant increase in activity, by replacing an active-site Met with Ala. The substrate specificity of both this mutant and another similar mutant are extraordinarily broad. X-ray crystallographic analysis shows that structural plasticity, a combination of alternate side-chain conformations and binding-site flexibility, allows both large and small substrates to be well accommodated.

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Protein

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Disease

Primary Citation of related structures