Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 109860.38 
• Atom Count: 7702 
• Residue Count: 1058 
• Unique protein chains: 1

1YGY

Crystal Structure of D-3-Phosphoglycerate dehydrogenase From Mycobacterium tuberculosis

• DOI: 10.2210/pdb1YGY/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2005-01-05 Released: 2005-01-25 
• Deposition Author(s): Dey, S., Grant, G.A., Sacchettini, J.C., TB Structural Genomics Consortium (TBSGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.249 
• R-Value Work: 0.205 

Literature

Crystal Structure of Mycobacterium tuberculosis D-3-Phosphoglycerate Dehydrogenase: EXTREME ASYMMETRY IN A TETRAMER OF IDENTICAL SUBUNITS

Dey, S., Grant, G.A., Sacchettini, J.C.

(2005) J.Biol.Chem. 280: 14892-14899

• PubMed: 15668249 
• DOI: 10.1074/jbc.M414489200


• PubMed Abstract: 
  

Phosphoglycerate dehydrogenases exist in at least three different structural motifs. The first D-3-phosphoglycerate dehydrogenase structure to be determined was from Escherichia coli and is a tetramer composed of identical subunits that contain three discernable structural domains. The crystal structure of D-3-phosphoglycerate dehydrogenase from Mycobacterium tuberculosis has been determined at 2.3 A. This enzyme represents a second structural motif of the D-3-phosphoglycerate dehydrogenase family, one that contains an extended C-terminal region. This structure is also a tetramer of identical subunits, and the extended motif of 135 amino acids exists as a fourth structural domain. This intervening domain exerts quite a surprising characteristic to the structure by introducing significant asymmetry in the tetramer. The asymmetric unit is composed of two identical subunits that exist in two different conformations characterized by rotation of approximately 180 degrees around a hinge connecting two of the four domains. This asymmetric arrangement results in the formation of two different and distinct domain interfaces between identical domains in the asymmetric unit. As a result, the surface of the intervening domain that is exposed to solvent in one subunit is turned inward in the other subunit toward the center of the structure where it makes contact with other structural elements. Significant asymmetry is also seen at the subunit level where different conformations exist at the NAD-binding site and the putative serine-binding site in the two unique subunits.

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Related Citations: 

• D-3-Phosphoglycerate Dehydrogenase from Mycobacterium tuberculosis Is a Link between the Escherichia coli and Mammalian Enzymes
  Dey, S.,Hu, Z.,Xu, X.L.,Sacchettini, J.C.,Grant, G.A.
  (2005) J.Biol.Chem. 280: 14884




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Organizational Affiliation: 

Department of Biochemistry & Biophysics, Texas A & M University, College Station, Texas 77843, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
D-3-phosphoglycerate dehydrogenase	A, B	529	Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)	Mutation(s): 0  Gene Names: serA EC: 1.1.1.95
Find proteins for P9WNX3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Go to UniProtKB:  P9WNX3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
TAR	A, B	D(-)-TARTARIC ACID C4 H6 O6 FEWJPZIEWOKRBE-LWMBPPNESA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.249 
• R-Value Work: 0.205 
• Space Group: P 6₅ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 165.513	α = 90.00
b = 165.513	β = 90.00
c = 218.144	γ = 120.00

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-01-05 
• Released Date: 2005-01-25 
• Deposition Author(s): Dey, S., Grant, G.A., Sacchettini, J.C., TB Structural Genomics Consortium (TBSGC)

Revision History 

• Version 1.0: 2005-01-25
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Derived calculations, Version format compliance