1LTH

T AND R STATES IN THE CRYSTALS OF BACTERIAL L-LACTATE DEHYDROGENASE REVEAL THE MECHANISM FOR ALLOSTERIC CONTROL

• PDB DOI: https://doi.org/10.2210/pdb1LTH/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Bifidobacterium longum subsp. longum
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1995-01-04 Released: 1995-03-31 
• Deposition Author(s): Iwata, S., Ohta, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.188 
• R-Value Observed: 0.188 

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Biological Assembly 2  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 70.35 kDa 
• Atom Count: 5,135 
• Modelled Residue Count: 626 
• Deposited Residue Count: 638 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
L-LACTATE DEHYDROGENASE (T- AND R- STATE TETRAMER COMPLEX)	A [auth T], B [auth R]	319	Bifidobacterium longum subsp. longum	Mutation(s): 0  Gene Names: BIFIDOBACTERIUM LONGUM LDH GENE EC: 1.1.1.27
UniProt
Find proteins for E8ME30 (Bifidobacterium longum subsp. longum (strain ATCC 15707 / DSM 20219 / JCM 1217 / NCTC 11818 / E194b)) Explore E8ME30  Go to UniProtKB:  E8ME30

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAD	D [auth T], F [auth R]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C21 H27 N7 O14 P2 BAWFJGJZGIEFAR-NNYOXOHSSA-N
FBP	C [auth T], E [auth R]	1,6-di-O-phosphono-beta-D-fructofuranose C6 H14 O12 P2 RNBGYGVWRKECFJ-ARQDHWQXSA-N
OXM	G [auth R]	OXAMIC ACID C2 H3 N O3 SOWBFZRMHSNYGE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.188 
• R-Value Observed: 0.188 
• Space Group: F 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 148.4	α = 90
b = 295.9	β = 90
c = 71	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-03-31 
Deposition Author(s): Iwata, S., Ohta, T.

Revision History  

• Version 1.0: 1995-03-31
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Database references, Derived calculations, Other, Structure summary
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Structure summary