1LDB

STRUCTURE DETERMINATION AND REFINEMENT OF BACILLUS STEAROTHERMOPHILUS LACTATE DEHYDROGENASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure determination and refinement of Bacillus stearothermophilus lactate dehydrogenase.

Piontek, K.Chakrabarti, P.Schar, H.P.Rossmann, M.G.Zuber, H.

(1990) Proteins 7: 74-92

  • DOI: 10.1002/prot.340070108
  • Primary Citation of Related Structures:  2LDB

  • PubMed Abstract: 
  • Structures have been determined of Bacillus stearothermophilus "apo" and holo lactate dehydrogenase. The holo-enzyme had been co-crystallized with the activator fructose 1,6-bisphosphate. The "apo" lactate dehydrogenase structure was solved by use of ...

    Structures have been determined of Bacillus stearothermophilus "apo" and holo lactate dehydrogenase. The holo-enzyme had been co-crystallized with the activator fructose 1,6-bisphosphate. The "apo" lactate dehydrogenase structure was solved by use of the known apo-M4 dogfish lactate dehydrogenase molecule as a starting model. Phases were refined and extended from 4 A to 3 A resolution by means of the noncrystallographic molecular 222 symmetry. The R-factor was reduced to 28.7%, using 2.8 A resolution data, in a restrained least-squares refinement in which the molecular symmetry was imposed as a constraint. A low occupancy of coenzyme was found in each of the four subunits of the "apo"-enzyme. Further refinement proceeded with the isomorphous holo-enzyme from Bacillus stearothermophilus. After removing the noncrystallographic constraints, the R-factor dropped from 30.3% to a final value of 26.0% with a 0.019 A and 1.7 degrees r.m.s. deviation from idealized bond lengths and angles, respectively. Two sulfate ions per subunit were included in the final model of the "apo"-form--one at the substrate binding site and one close to the molecular P-axis near the location of the fructose 1,6-bisphosphate activator. The final model of the holo-enzyme incorporated two sulfate ions per subunit, one at the substrate binding site and another close to the R-axis. One nicotinamide adenine dinucleotide coenzyme molecule per subunit and two fructose 1,6-bisphosphate molecules per tetramer were also included. The phosphate positions of fructose 1,6-bisphosphate are close to the sulfate ion near the P-axis in the "apo" model. This structure represents the first reported refined model of an allosteric activated lactate dehydrogenase. The structure of the activated holo-enzyme showed far greater similarity to the ternary complex of dogfish M4 lactate dehydrogenase with nicotinamide adenine dinucleotide and oxamate than to apo-M4 dogfish lactate dehydrogenase. The conformations of nicotinamide adenine dinucleotide and fructose 1,6-bisphosphate were also analyzed.


    Related Citations: 
    • Crystallization of Lactate Dehydrogenase from Bacillus Stearothermophilus
      Schaer, H.-P.,Zuber, H.,Rossmann, M.G.
      (1982) J.Mol.Biol. 154: 349
    • Nucleotide Sequences of Lactate Dehydrogenase Genes from the Thermophilic Bacteria Bacillus Stearothermophilus, B. Caldolyticus and B. Caldotenax
      Zuelli, F.,Weber, H.,Zuber, H.
      (1987) Hoppe-Seyler's Z.Physiol.Chem. 368: 1167


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APO-L-LACTATE DEHYDROGENASE
A, B, C, D
317Geobacillus stearothermophilusGene Names: ldh (lct)
EC: 1.1.1.27
Find proteins for P00344 (Geobacillus stearothermophilus)
Go to UniProtKB:  P00344
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 86.900α = 90.00
b = 86.900β = 90.00
c = 357.300γ = 120.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1989-07-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance