1YIQ

Molecular cloning and structural analysis of quinohemoprotein alcohol dehydrogenase ADHIIG from Pseudomonas putida HK5. Compariison to the other quinohemoprotein alcohol dehydrogenase ADHIIB found in the same microorganism.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular cloning and structural analysis of quinohemoprotein alcohol dehydrogenase ADH-IIG from Pseudomonas putida HK5

Toyama, H.Chen, Z.W.Fukumoto, M.Adachi, O.Matsushita, K.Mathews, F.S.

(2005) J Mol Biol 352: 91-104

  • DOI: 10.1016/j.jmb.2005.06.078
  • Primary Citation of Related Structures:  
    1YIQ

  • PubMed Abstract: 
  • Depending on the alcohols used as growth substrates, Pseudomonas putida HK5 produces two distinct quinohemoprotein alcohol dehydrogenases, ADH-IIB and ADH-IIG, both of which contain pyrroloquinoline quinone (PQQ) and heme c as the prosthetic groups b ...

    Depending on the alcohols used as growth substrates, Pseudomonas putida HK5 produces two distinct quinohemoprotein alcohol dehydrogenases, ADH-IIB and ADH-IIG, both of which contain pyrroloquinoline quinone (PQQ) and heme c as the prosthetic groups but show different substrate specificities, especially for diol substrates. Molecular cloning of the gene of ADH-IIB and its crystal structure are already reported. Here, molecular cloning of the gene, qgdA, and solution of the three-dimensional structure of ADH-IIG are reported. The enzyme consists of 718 amino acid residues including a signal sequence of 29 amino acid residues. The PQQ domain is highly homologous to other quinoproteins, especially to quinohemoproteins. The crystal structure of ADH-IIG, determined at 2.2A resolution, shows that the overall structure and the amino acid residues involved in PQQ binding are quite similar to ADH-IIB and to another quinohemoprotein ADH, qhEDH from Comamonas testosteroni. However, the lengths of the linker regions connecting the PQQ and the cytochrome domains are different from each other, leading to a significant difference in orientation of the cytochrome domain with respect to the PQQ domain. Apart from ADH-IIB and qhEDH, ADH-IIG has an extra 12-residue helix within loop 3 in the PQQ domain and an extra 3(10) helix in the C terminus of the cytochrome domain, and both helices appear parallel and linked by a hydrogen bond. The amino acid residues contacting substrate/product in the crystal structures are also different among them. In the crystal structure of ADH-IIG with 1,2-propanediol, one of the hydroxyl groups of the substrate forms a hydrogen bond with O5 of PQQ and OD1 of Asp300, and the other interacts with a water molecule and with NE2 of Trp386, the corresponding residue of which is not found in ADH-IIB and qhEDH, and might be the residue responsible for making ADH-IIG prefer diol substrates.


    Related Citations: 
    • Structure at 1.9 A Resolution of a Quinohemoprotein Alcohol Dehydrogenase from Pseudomonas putida HK5
      Chen, Z., Matsushita, K., Yamashita, T., Fujii, T., Toyama, H., Adachi, O., Bellamy, H.D., Mathews, F.S.
      (2002) Structure 10: 837

    Organizational Affiliation

    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University, Yamaguchi 753-8515, Japan. hirot@yamaguchi-u.ac.jp



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Quinohemoprotein alcohol dehydrogenaseA689Pseudomonas putidaMutation(s): 0 
Gene Names: qgdA
EC: 1.1.99 (PDB Primary Data), 1.1.9.1 (UniProt)
Find proteins for Q4W6G0 (Pseudomonas putida)
Explore Q4W6G0 
Go to UniProtKB:  Q4W6G0
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
PQQ
Query on PQQ

Download CCD File 
A
PYRROLOQUINOLINE QUINONE
C14 H6 N2 O8
MMXZSJMASHPLLR-UHFFFAOYSA-N
 Ligand Interaction
PGR
Query on PGR

Download CCD File 
A
R-1,2-PROPANEDIOL
C3 H8 O2
DNIAPMSPPWPWGF-GSVOUGTGSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.173 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.476α = 90
b = 75.476β = 90
c = 237.894γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement
HKL-2000data reduction
CCP4phasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-16
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance