2M3S

Calmodulin, i85l, f92e, h107i, l112r, a128t, m144r mutant

• PDB DOI: https://doi.org/10.2210/pdb2M3S/pdb
• BMRB: 18976

• Classification: METAL BINDING PROTEIN
• Organism(s): Gallus gallus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2013-01-25 Released: 2013-07-24 
• Deposition Author(s): Moroz, Y.S., Wu, Y., Cheng, H., Roder, H., Korendovych, I.V.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry 

Literature

A single mutation in a regulatory protein produces evolvable allosterically regulated catalyst of nonnatural reaction.

Moroz, O.V., Moroz, Y.S., Wu, Y., Olsen, A.B., Cheng, H., Mack, K.L., McLaughlin, J.M., Raymond, E.A., Zhezherya, K., Roder, H., Korendovych, I.V.

(2013) Angew Chem Int Ed Engl 52: 6246-6249

• PubMed: 23630096 
• DOI: https://doi.org/10.1002/anie.201302339
• Primary Citation of Related Structures:  
  2M3S


• PubMed Abstract: 
  

  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 k _cat value higher than that of catalytic antibodies for the same reaction, still preserving allosteric regulation.

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Organizational Affiliation: 

Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.27 kDa 
• Atom Count: 1,195 
• Modelled Residue Count: 151 
• Deposited Residue Count: 151 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Calmodulin	A	151	Gallus gallus	Mutation(s): 6  Gene Names: CALM, CAM, RCJMB04_24e7
UniProt
Find proteins for P62149 (Gallus gallus) Explore P62149  Go to UniProtKB:  P62149

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A], D [auth A], E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-07-24 
Deposition Author(s): Moroz, Y.S., Wu, Y., Cheng, H., Roder, H., Korendovych, I.V.

Revision History  

• Version 1.0: 2013-07-24
  Type: Initial release
  
• Version 1.1: 2023-06-14
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.2: 2024-05-15
  Changes: Data collection, Database references