Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 37.25 kDa 
• Atom Count: 3024 
• Modelled Residue Count: 320 
• Deposited Residue Count: 320 
• Unique protein chains: 1

1CBK

7,8-DIHYDRO-6-HYDROXYMETHYLPTERIN-PYROPHOSPHOKINASE FROM HAEMOPHILUS INFLUENZAE

• DOI: 10.2210/pdb1CBK/pdb

• Classification: TRANSFERASE
• Organism(s): Haemophilus influenzae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-02-26 Released: 2000-03-01 
• Deposition Author(s): Hennig, M., D'Arcy, A., Dale, G., Oefner, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free: 0.213 
• R-Value Work: 0.162 

Literature

The structure and function of the 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase from Haemophilus influenzae.

Hennig, M., Dale, G.E., D'arcy, A., Danel, F., Fischer, S., Gray, C.P., Jolidon, S., Muller, F., Page, M.G., Pattison, P., Oefner, C.

(1999) J Mol Biol 287: 211-219

• PubMed: 10080886 
• DOI: 10.1006/jmbi.1999.2623
• Primary Citation of Related Structures:  
  1CBK


• PubMed Abstract: 
  

The gene encoding the 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase of Haemophilus influenzae has been cloned and expressed in Escherichia coli. A complex of the purified protein with a substrate analog has been crystallized and its structure solved by multiple anomalous dispersion using phase information obtained from a single crystal of selenomethione-labeled protein. The enzyme folds into a four-stranded antiparallel beta-sheet flanked on one side by two alpha-helices and on the other by three consecutive alpha-helices, giving a novel beta1alpha1beta2beta3alpha2beta4alpha3alpha4alpha5 polypeptide topology. The three-dimensional structure of a binary complex has been refined at 2.1 A resolution. The location of the substrate analog and a sulfate ion gives important insight into the molecular mechanism of the enzyme.

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Organizational Affiliation: 

F. Hoffmann-La Roche Ltd, Pharma Preclinical Research, Basel, CH-4070, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (7,8-DIHYDRO-6-HYDROXYMETHYLPTERIN-PYROPHOSPHOKINASE)	A, B	160	Haemophilus influenzae	Mutation(s): 0  EC: 2.7.6.3
Find proteins for P43777 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P43777  Go to UniProtKB:  P43777

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ROI	D [auth A], F [auth B]	7,8-DIHYDRO-7,7-DIMETHYL-6-HYDROXYPTERIN C8 H11 N5 O2 JMLQSLXEUWNWFI-UHFFFAOYSA-N
SO4	C [auth A], E [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free: 0.213 
• R-Value Work: 0.162 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.775	α = 90
b = 50.791	β = 101.73
c = 70.893	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement
DENZO	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-02-26 
• Released Date: 2000-03-01 
Deposition Author(s): Hennig, M., D'Arcy, A., Dale, G., Oefner, C.

Revision History  

• Version 1.0: 2000-03-01
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance