6YSO

Crystal structure of the (SR) Ca2+-ATPase solved by vanadium SAD phasing


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.13 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Experimental phasing with vanadium and application to nucleotide-binding membrane proteins.

El Omari, K.Mohamad, N.Bountra, K.Duman, R.Romano, M.Schlegel, K.Kwong, H.S.Mykhaylyk, V.Olesen, C.Moller, J.V.Bublitz, M.Beis, K.Wagner, A.

(2020) IUCrJ 7: 1092-1101

  • DOI: https://doi.org/10.1107/S2052252520012312
  • Primary Citation of Related Structures:  
    6YO1, 6YSO

  • PubMed Abstract: 

    The structure determination of soluble and membrane proteins can be hindered by the crystallographic phase problem, especially in the absence of a suitable homologous structure. Experimental phasing is the method of choice for novel structures; however, it often requires heavy-atom derivatization, which can be difficult and time-consuming. Here, a novel and rapid method to obtain experimental phases for protein structure determination by vanadium phasing is reported. Vanadate is a transition-state mimic of phosphoryl-transfer reactions and it has the advantage of binding specifically to the active site of numerous enzymes catalyzing this reaction. The applicability of vanadium phasing has been validated by determining the structures of three different protein-vanadium complexes, two of which are integral membrane proteins: the rabbit sarcoplasmic reticulum Ca 2+ -ATPase, the antibacterial peptide ATP-binding cassette transporter McjD from Escherichia coli and the soluble enzyme RNAse A from Bos taurus . Vanadium phasing was successful even at low resolution and despite severe anisotropy in the data. This method is principally applicable to a large number of proteins, representing six of the seven Enzyme Commission classes. It relies exclusively on the specific chemistry of the protein and it does not require any modifications, making it a very powerful addition to the phasing toolkit. In addition to the phasing power of this technique, the protein-vanadium complexes also provide detailed insights into the reaction mechanisms of the studied proteins.


  • Organizational Affiliation

    Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sarcoplasmic/endoplasmic reticulum calcium ATPase 1
A, B
994Oryctolagus cuniculusMutation(s): 0 
EC: 7.2.2.10
Membrane Entity: Yes 
UniProt
Find proteins for P04191 (Oryctolagus cuniculus)
Explore P04191 
Go to UniProtKB:  P04191
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04191
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
128
Query on 128

Download Ideal Coordinates CCD File 
C [auth A],
J [auth B]
SPIRO(2,4,6-TRINITROBENZENE[1,2A]-2O',3O'-METHYLENE-ADENINE-TRIPHOSPHATE
C16 H17 N8 O19 P3
XFMMHXLUHKBKQE-UHEGPQQHSA-N
TG1
Query on TG1

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B]
OCTANOIC ACID [3S-[3ALPHA, 3ABETA, 4ALPHA, 6BETA, 6ABETA, 7BETA, 8ALPHA(Z), 9BALPHA]]-6-(ACETYLOXY)-2,3,-3A,4,5,6,6A,7,8,9B-DECAHYDRO-3,3A-DIHYDROXY-3,6,9-TRIMETHYL-8-[(2-METHYL-1-OXO-2-BUTENYL)OX Y]-2-OXO-4-(1-OXOBUTOXY)-AZULENO[4,5-B]FURAN-7-YL ESTER
C34 H50 O12
IXFPJGBNCFXKPI-FSIHEZPISA-N
VN4 (Subject of Investigation/LOI)
Query on VN4

Download Ideal Coordinates CCD File 
E [auth A],
L [auth B]
oxido(dioxo)vanadium
O3 V
ALTWGIIQPLQAAM-UHFFFAOYSA-N
K
Query on K

Download Ideal Coordinates CCD File 
I [auth A],
P [auth B]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
H [auth A],
O [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
M [auth B],
N [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.13 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 131.14α = 90
b = 94.39β = 107.05
c = 135.11γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
CRANK2phasing

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-04
    Type: Initial release
  • Version 1.1: 2020-12-02
    Changes: Database references
  • Version 1.2: 2024-05-15
    Changes: Data collection, Database references