4M6J

Crystal structure of human dihydrofolate reductase (DHFR) bound to NADPH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Divergent evolution of protein conformational dynamics in dihydrofolate reductase.

Bhabha, G.Ekiert, D.C.Jennewein, M.Zmasek, C.M.Tuttle, L.M.Kroon, G.Dyson, H.J.Godzik, A.Wilson, I.A.Wright, P.E.

(2013) Nat Struct Mol Biol 20: 1243-1249

  • DOI: 10.1038/nsmb.2676
  • Primary Citation of Related Structures:  
    4M6J, 4M6K, 4M6L

  • PubMed Abstract: 
  • Molecular evolution is driven by mutations, which may affect the fitness of an organism and are then subject to natural selection or genetic drift. Analysis of primary protein sequences and tertiary structures has yielded valuable insights into the evolution of protein function, but little is known about the evolution of functional mechanisms, protein dynamics and conformational plasticity essential for activity ...

    Molecular evolution is driven by mutations, which may affect the fitness of an organism and are then subject to natural selection or genetic drift. Analysis of primary protein sequences and tertiary structures has yielded valuable insights into the evolution of protein function, but little is known about the evolution of functional mechanisms, protein dynamics and conformational plasticity essential for activity. We characterized the atomic-level motions across divergent members of the dihydrofolate reductase (DHFR) family. Despite structural similarity, Escherichia coli and human DHFRs use different dynamic mechanisms to perform the same function, and human DHFR cannot complement DHFR-deficient E. coli cells. Identification of the primary-sequence determinants of flexibility in DHFRs from several species allowed us to propose a likely scenario for the evolution of functionally important DHFR dynamics following a pattern of divergent evolution that is tuned by cellular environment.


    Organizational Affiliation

    1] Department of Integrative Structural and Computational Biology, Scripps Research Institute, La Jolla, California, USA. [2] Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California, USA. [3].



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dihydrofolate reductaseA187Homo sapiensMutation(s): 0 
Gene Names: DHFR
EC: 1.5.1.3
UniProt & NIH Common Fund Data Resources
Find proteins for P00374 (Homo sapiens)
Explore P00374 
Go to UniProtKB:  P00374
PHAROS:  P00374
GTEx:  ENSG00000228716 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00374
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP
Query on NDP

Download Ideal Coordinates CCD File 
B [auth A]NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.958α = 90
b = 65.525β = 90
c = 152.251γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-25
    Type: Initial release
  • Version 1.1: 2013-10-16
    Changes: Database references
  • Version 1.2: 2013-11-20
    Changes: Database references