1TT9

Structure of the bifunctional and Golgi associated formiminotransferase cyclodeaminase octamer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.42 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the bifunctional and Golgi-associated formiminotransferase cyclodeaminase octamer

Mao, Y.Vyas, N.K.Vyas, M.N.Chen, D.H.Ludtke, S.J.Chiu, W.Quiocho, F.A.

(2004) Embo J. 23: 2963-2971

  • DOI: 10.1038/sj.emboj.7600327
  • Also Cited By: 2PFD

  • PubMed Abstract: 
  • Mammalian formiminotransferase cyclodeaminase (FTCD), a 0.5 million Dalton homo-octameric enzyme, plays important roles in coupling histidine catabolism with folate metabolism and integrating the Golgi complex with the vimentin intermediate filament ...

    Mammalian formiminotransferase cyclodeaminase (FTCD), a 0.5 million Dalton homo-octameric enzyme, plays important roles in coupling histidine catabolism with folate metabolism and integrating the Golgi complex with the vimentin intermediate filament cytoskeleton. It is also linked to two human diseases, autoimmune hepatitis and glutamate formiminotransferase deficiency. Determination of the FTCD structure by X-ray crystallography and electron cryomicroscopy revealed that the eight subunits, each composed of distinct FT and CD domains, are arranged like a square doughnut. A key finding indicates that coupling of three subunits governs the octamer-dependent sequential enzyme activities, including channeling of intermediate and conformational change. The structure further shed light on the molecular nature of two strong antigenic determinants of FTCD recognized by autoantibodies from patients with autoimmune hepatitis and on the binding of thin vimentin filaments to the FTCD octamer.


    Organizational Affiliation

    Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Formimidoyltransferase-cyclodeaminase (Formiminotransferase- cyclodeaminase) (FTCD) (58 kDa microtubule-binding protein)
A, B, C, D
541Rattus norvegicusMutation(s): 0 
Gene Names: Ftcd
Find proteins for O88618 (Rattus norvegicus)
Go to UniProtKB:  O88618
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.42 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.251 
  • Space Group: P 4
Unit Cell:
Length (Å)Angle (°)
a = 134.848α = 90.00
b = 134.848β = 90.00
c = 156.365γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
SnBphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description