1J0P

Three dimensional Structure of the Y43L mutant of Tetraheme Cytochrome c3 from Desulfovibrio vulgaris Miyazaki F


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.91 Å
  • R-Value Free: 0.136 
  • R-Value Work: 0.099 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Role of the aromatic ring of Tyr43 in tetraheme cytochrome c(3) from Desulfovibrio vulgaris Miyazaki F

Ozawa, K.Takayama, Y.Yasukawa, F.Ohmura, T.Cusanovich, M.A.Tomimoto, Y.Ogata, H.Higuchi, Y.Akutsu, H.

(2003) Biophys.J. 85: 3367-3374

  • DOI: 10.1016/S0006-3495(03)74756-0
  • Primary Citation of Related Structures:  1J0O, 1WR5

  • PubMed Abstract: 
  • Tyrosine 43 is positioned parallel to the fifth heme axial ligand, His34, of heme 1 in the tetraheme cytochrome c(3). The replacement of tyrosine with leucine increased the redox potential of heme 1 by 44 and 35 mV at the first and last reduction ste ...

    Tyrosine 43 is positioned parallel to the fifth heme axial ligand, His34, of heme 1 in the tetraheme cytochrome c(3). The replacement of tyrosine with leucine increased the redox potential of heme 1 by 44 and 35 mV at the first and last reduction steps, respectively; its effects on the other hemes are small. In contrast, the Y43F mutation hardly changed the potentials. It shows that the aromatic ring at this position contributes to lowering the redox potential of heme 1 locally, although this cannot be the major contribution to the extremely low redox potentials of cytochrome c(3). Furthermore, temperature-dependent line-width broadening in partially reduced samples established that the aromatic ring at position 43 participates in the control of the kinetics of intramolecular electron transfer. The rate of reduction of Y43L cytochrome c(3) by 5-deazariboflavin semiquinone under partially reduced conditions was significantly different from that of the wild type in the last stage of the reduction, supporting the involvement of Tyr43 in regulation of reduction kinetics. The mutation of Y43L, however, did not induce a significant change in the crystal structure.


    Organizational Affiliation

    Institute for Protein Research, Osaka University, Suita, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cytochrome c3
A
108Desulfovibrio vulgaris (strain Miyazaki F / DSM 19637)N/A
Find proteins for P00132 (Desulfovibrio vulgaris (strain Miyazaki F / DSM 19637))
Go to UniProtKB:  P00132
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
HEM
Query on HEM

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

Download SDF File 
Download CCD File 
A
ETHANOL
C2 H6 O
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.91 Å
  • R-Value Free: 0.136 
  • R-Value Work: 0.099 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.868α = 90.00
b = 67.309β = 90.00
c = 34.328γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SHELXL-97refinement
SCALAdata scaling
MOSFLMdata reduction
CNSphasing
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance