1VHB

BACTERIAL DIMERIC HEMOGLOBIN FROM VITREOSCILLA STERCORARIA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Unusual structure of the oxygen-binding site in the dimeric bacterial hemoglobin from Vitreoscilla sp.

Tarricone, C.Galizzi, A.Coda, A.Ascenzi, P.Bolognesi, M.

(1997) Structure 5: 497-507

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The first hemoglobin identified in bacteria was isolated from Vitreoscilla stercoraria (VtHb) as a homodimeric species. The wild-type protein has been reported to display medium oxygen affinity and cooperative ligand-binding properties. Moreover, VtH ...

    The first hemoglobin identified in bacteria was isolated from Vitreoscilla stercoraria (VtHb) as a homodimeric species. The wild-type protein has been reported to display medium oxygen affinity and cooperative ligand-binding properties. Moreover, VtHb can support aerobic growth in Escherichia coli with impaired terminal oxidase function. This ability of VtHb to improve the growth properties of E. coli has important applications in fermentation technology, assisting the overexpression of recombinant proteins and antibiotics. Oxygen binding heme domains have been identified in chimeric proteins from bacteria and yeast, where they are covalently linked to FAD- and NAD(P)H-binding domains. We investigate here the fold, the distal heme site structure and the quaternary assembly of a bacterial hemoglobin which does not bear the typical flavohemoglobin domain organization.


    Organizational Affiliation

    Dipartimento di Genetica e Microbiologia, Università di Pavia, Via Abbiategrasso 207, 27100, Pavia, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEMOGLOBIN
A, B
146Vitreoscilla stercorariaMutation(s): 0 
Gene Names: vhb
Find proteins for P04252 (Vitreoscilla stercoraria)
Go to UniProtKB:  P04252
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 63.320α = 90.00
b = 41.420β = 106.17
c = 62.940γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
NCSMASKmodel building
MLPHAREphasing
NCSMASKphasing
TNTrefinement
ROTAVATA)data scaling
SHELX-90phasing
SOLOMONphasing
SCALEITmodel building
SHELX90model building
DMmodel building
GLRFphasing
DMphasing
CCP4data scaling
SCALEITphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-25
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance