Crystal structure of L-Serine Hydroxymethyltransferase in complex with glycine

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 

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This is version 3.1 of the entry. See complete history


Engineered L-Serine Hydroxymethyltransferase from Streptococcus thermophilus for the Synthesis of alpha , alpha-Dialkyl-alpha-Amino Acids.

Hernandez, K.Zelen, I.Petrillo, G.Uson, I.Wandtke, C.M.Bujons, J.Joglar, J.Parella, T.Clapes, P.

(2015) Angew Chem Int Ed Engl 54: 3013-3017

  • DOI: https://doi.org/10.1002/anie.201411484
  • Primary Citation of Related Structures:  
    4WXB, 4WXF, 4WXG

  • PubMed Abstract: 

    α,α-Disubstituted α-amino acids are central to biotechnological and biomedical chemical processes for their own sake and as substructures of biologically active molecules for diverse biomedical applications. Structurally, these compounds contain a quaternary stereocenter, which is particularly challenging for stereoselective synthesis. The pyridoxal-5'-phosphate (PLP)-dependent L-serine hydroxymethyltransferase from Streptococcus thermophilus (SHMT(Sth); EC was engineered to achieve the stereoselective synthesis of a broad structural variety of α,α-dialkyl-α-amino acids. This was accomplished by the formation of quaternary stereocenters through aldol addition of the amino acids D-Ala and D-Ser to a wide acceptor scope catalyzed by the minimalist SHMT(Sth) Y55T variant overcoming the limitation of the native enzyme for Gly. The SHMT(Sth) Y55T variant tolerates aromatic and aliphatic aldehydes as well as hydroxy- and nitrogen-containing aldehydes as acceptors.

  • Organizational Affiliation

    Dept Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona (Spain).

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine hydroxymethyltransferaseA,
B [auth C]
428Streptococcus thermophilus CNRZ1066Mutation(s): 0 
Gene Names: glyAstr0755
Find proteins for Q5M0B4 (Streptococcus thermophilus (strain CNRZ 1066))
Explore Q5M0B4 
Go to UniProtKB:  Q5M0B4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5M0B4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.47α = 90
b = 115.47β = 90
c = 191.72γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Spanish Ministry of Science, Innovation, and UniversitiesSpainBIO2006-14139
Spanish Ministry of Economy and CompetitivenessSpainBFU2012-35367

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-03-04
    Changes: Database references
  • Version 2.0: 2017-09-13
    Changes: Atomic model, Author supporting evidence, Derived calculations
  • Version 3.0: 2019-10-23
    Type: Coordinate replacement
    Reason: Sequence discrepancy
    Changes: Advisory, Atomic model, Author supporting evidence, Data collection, Database references, Derived calculations, Other, Refinement description, Structure summary
  • Version 3.1: 2024-01-10
    Changes: Data collection, Database references, Refinement description