1E3T

Solution Structure of the NADP(H) binding Component (dIII) of Proton-Translocating Transhydrogenase from Rhodospirillum rubrum


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: AVERAGE OF 10 LOWEST ENERGY STRUCTURES 

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This is version 1.2 of the entry. See complete history


Literature

Solution Structure of the Nadp(H)-Binding Component (Diii) of Proton-Translocating Transhydrogenase from Rhodospirillum Rubrum

Jeeves, M.Smith, K.J.Quirk, P.G.Cotton, N.P.J.Jackson, J.B.

(2000) Biochim Biophys Acta 1459: 248

  • DOI: 10.1016/s0005-2728(00)00159-6
  • Primary Citation of Related Structures:  
    1E3T

  • PubMed Abstract: 
  • Transhydrogenase is a proton pump found in the membranes of bacteria and animal mitochondria. The solution structure of the expressed, 21.5 kDa, NADP(H)-binding component (dIII) of transhydrogenase from Rhodospirillum rubrum has been solved by NMR me ...

    Transhydrogenase is a proton pump found in the membranes of bacteria and animal mitochondria. The solution structure of the expressed, 21.5 kDa, NADP(H)-binding component (dIII) of transhydrogenase from Rhodospirillum rubrum has been solved by NMR methods. This is the first description of the structure of dIII from a bacterial source. The protein adopts a Rossmann fold: an open, twisted, parallel beta-sheet, flanked by helices. However, the binding of NADP(+) to dIII is profoundly different to that seen in other Rossmann structures, in that its orientation is reversed: the adenosine moiety interacts with the first betaalphabetaalphabeta motif, and the nicotinamide with the second. Features in the structure that might be responsible for changes in nucleotide-binding affinity during catalysis, and for interaction with other components of the enzyme, are identified. The results are compared with the recently determined, high-resolution crystal structures of human and bovine dIII which also show the reversed nucleotide orientation.


    Organizational Affiliation

    School of Biosciences, University of Birmingham, Edgbaston, B15 2TT, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NICOTINAMIDE NUCLEOTIDE TRANSHYDROGENASE (SUBUNIT BETA)A203Rhodospirillum rubrumMutation(s): 0 
Gene Names: pntB
EC: 1.6.1.1 (PDB Primary Data), 7.1.1.1 (UniProt)
Find proteins for Q2RSB4 (Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIB 8255 / S1))
Explore Q2RSB4 
Go to UniProtKB:  Q2RSB4
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download CCD File 
A
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: AVERAGE OF 10 LOWEST ENERGY STRUCTURES 
  • OLDERADO: 1E3T Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-03
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance