3C6G

Crystal structure of CYP2R1 in complex with vitamin D3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

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Literature

Structural analysis of CYP2R1 in complex with vitamin D3.

Strushkevich, N.Usanov, S.A.Plotnikov, A.N.Jones, G.Park, H.W.

(2008) J Mol Biol 380: 95-106

  • DOI: 10.1016/j.jmb.2008.03.065
  • Primary Citation of Related Structures:  
    3C6G

  • PubMed Abstract: 
  • The activation of vitamin D to its hormonal form is mediated by cytochrome P450 enzymes. CYP2R1 catalyzes the initial step converting vitamin D into 25-hydroxyvitamin D. A CYP2R1 gene mutation causes an inherited form of rickets due to 25-hydroxylase ...

    The activation of vitamin D to its hormonal form is mediated by cytochrome P450 enzymes. CYP2R1 catalyzes the initial step converting vitamin D into 25-hydroxyvitamin D. A CYP2R1 gene mutation causes an inherited form of rickets due to 25-hydroxylase deficiency. To understand the narrow substrate specificity of CYP2R1 we obtained the hemeprotein in a highly purified state, confirmed the enzyme as a vitamin D 25-hydroxylase, and solved the crystal structure of CYP2R1 in complex with vitamin D3. The CYP2R1 structure adopts a closed conformation with the substrate access channel being covered by the ordered B'-helix and slightly opened to the surface, which defines the substrate entrance point. The active site is lined by conserved, mostly hydrophobic residues. Vitamin D3 is bound in an elongated conformation with the aliphatic side-chain pointing toward the heme. The structure reveals the secosteroid binding mode in an extended active site and allows rationalization of the molecular basis of the inherited rickets associated with CYP2R1.


    Organizational Affiliation

    Structural Genomics Consortium, University of Toronto, Toronto, Ontario, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cytochrome P450 2R1AB479Homo sapiensMutation(s): 0 
Gene Names: CYP2R1
EC: 1.14.14 (PDB Primary Data), 1.14.14.24 (UniProt)
Find proteins for Q6VVX0 (Homo sapiens)
Explore Q6VVX0 
Go to UniProtKB:  Q6VVX0
NIH Common Fund Data Resources
PHAROS  Q6VVX0
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
Cycloheptakis-(1-4)-(alpha-D-glucopyranose)
C, D
7 N/A Oligosaccharides Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900012
Query on PRD_900012
C, Dbeta-cyclodextrinOligosaccharide /  Drug delivery

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 137.68α = 90
b = 163.051β = 90
c = 152.755γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary