4Z1M

Bovine F1-ATPase inhibited by three copies of the inhibitor protein IF1 crystallised in the presence of thiophosphate.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

How release of phosphate from mammalian F1-ATPase generates a rotary substep.

Bason, J.V.Montgomery, M.G.Leslie, A.G.Walker, J.E.

(2015) Proc.Natl.Acad.Sci.USA 112: 6009-6014

  • DOI: 10.1073/pnas.1506465112
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The rotation of the central stalk of F1-ATPase is driven by energy derived from the sequential binding of an ATP molecule to its three catalytic sites and the release of the products of hydrolysis. In human F1-ATPase, each 360° rotation consists of t ...

    The rotation of the central stalk of F1-ATPase is driven by energy derived from the sequential binding of an ATP molecule to its three catalytic sites and the release of the products of hydrolysis. In human F1-ATPase, each 360° rotation consists of three 120° steps composed of substeps of about 65°, 25°, and 30°, with intervening ATP binding, phosphate release, and catalytic dwells, respectively. The F1-ATPase inhibitor protein, IF1, halts the rotary cycle at the catalytic dwell. The human and bovine enzymes are essentially identical, and the structure of bovine F1-ATPase inhibited by IF1 represents the catalytic dwell state. Another structure, described here, of bovine F1-ATPase inhibited by an ATP analog and the phosphate analog, thiophosphate, represents the phosphate binding dwell. Thiophosphate is bound to a site in the α(E)β(E)-catalytic interface, whereas in F1-ATPase inhibited with IF1, the equivalent site is changed subtly and the enzyme is incapable of binding thiophosphate. These two structures provide a molecular mechanism of how phosphate release generates a rotary substep as follows. In the active enzyme, phosphate release from the β(E)-subunit is accompanied by a rearrangement of the structure of its binding site that prevents released phosphate from rebinding. The associated extrusion of a loop in the β(E)-subunit disrupts interactions in the α(E)β(E-)catalytic interface and opens it to its fullest extent. Other rearrangements disrupt interactions between the γ-subunit and the C-terminal domain of the α(E)-subunit. To restore most of these interactions, and to make compensatory new ones, the γ-subunit rotates through 25°-30°.


    Organizational Affiliation

    Medical Research Council Mitochondrial Biology Unit, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0XY, United Kingdom; and.,Medical Research Council Mitochondrial Biology Unit, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0XY, United Kingdom; and walker@mrc-mbu.cam.ac.uk.,Medical Research Council Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge CB2 0QH, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP synthase subunit alpha, mitochondrial
A, B, C
510Bos taurusMutation(s): 0 
Gene Names: ATP5F1A (ATP5A1, ATP5A2)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
F-type ATPase
Protein: 
F1-ATPase from bovine heart mitochondria
Find proteins for P19483 (Bos taurus)
Go to UniProtKB:  P19483
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ATP synthase subunit beta, mitochondrial
D, E, F
482Bos taurusMutation(s): 0 
Gene Names: ATP5F1B (ATP5B)
EC: 7.1.2.2
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
F-type ATPase
Protein: 
F1-ATPase from bovine heart mitochondria
Find proteins for P00829 (Bos taurus)
Go to UniProtKB:  P00829
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ATP synthase subunit gamma, mitochondrial
G
273Bos taurusMutation(s): 0 
Gene Names: ATP5F1C (ATP5C, ATP5C1)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
F-type ATPase
Protein: 
F1-ATPase from bovine heart mitochondria
Find proteins for P05631 (Bos taurus)
Go to UniProtKB:  P05631
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
ATPase inhibitor, mitochondrial
H, I, J
66Bos taurusMutation(s): 1 
Gene Names: ATP5IF1 (ATPI, ATPIF1)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
F-type ATPase
Protein: 
F1-ATPase from bovine heart mitochondria
Find proteins for P01096 (Bos taurus)
Go to UniProtKB:  P01096
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A, B, C
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
ADP
Query on ADP

Download SDF File 
Download CCD File 
D, F
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
B, C, E, F, G
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.239 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 108.773α = 90.00
b = 155.286β = 90.00
c = 271.018γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
Aimlessdata scaling
Cootmodel building
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-05-13
    Type: Database references
  • Version 1.2: 2015-05-20
    Type: Database references