2M3S image
Deposition Date 2013-01-25
Release Date 2013-07-24
Last Version Date 2024-05-15
Entry Detail
PDB ID:
2M3S
Title:
Calmodulin, i85l, f92e, h107i, l112r, a128t, m144r mutant
Biological Source:
Source Organism:
Gallus gallus (Taxon ID: 9031)
Host Organism:
Method Details:
Experimental Method:
Conformers Calculated:
40
Conformers Submitted:
20
Selection Criteria:
structures with acceptable covalent geometry
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Calmodulin
Gene (Uniprot):CALM
Mutations:I85L, F92E, H107I, L107I, A128T, M144R
Chain IDs:A
Chain Length:151
Number of Molecules:1
Biological Source:Gallus gallus
Ligand Molecules
Primary Citation
A single mutation in a regulatory protein produces evolvable allosterically regulated catalyst of nonnatural reaction.
Angew.Chem.Int.Ed.Engl. 52 6246 6249 (2013)
PMID: 23630096 DOI: 10.1002/anie.201302339

Abstact

It only takes one mutation: a strategically placed single mutation in a non-enzymatic protein scaffold produced AlleyCat, a small, allosterically regulated catalyst of Kemp elimination. In only 7 rounds of directed evolution enzymatic efficiency of the original 74 amino acid residue catalyst was improved more than 220-fold to achieve kcat value higher than that of catalytic antibodies for the same reaction, still preserving allosteric regulation.

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Chemical

Disease

Primary Citation of related structures