1SRX

THREE-DIMENSIONAL STRUCTURE OF ESCHERICHIA COLI THIOREDOXIN-S2 TO 2.8 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Three-dimensional structure of Escherichia coli thioredoxin-S2 to 2.8 A resolution.

Holmgren, A.Soderberg, B.O.Eklund, H.Branden, C.I.

(1975) Proc.Natl.Acad.Sci.USA 72: 2305-2309


  • PubMed Abstract: 
  • The three-dimensional structure of the electron transport protein thioredoxin-S2 from E. coli has been determined from a 2.8 A resolution electron density map. The molecule is built up of a central core of three parallel and two antiparallel strands ...

    The three-dimensional structure of the electron transport protein thioredoxin-S2 from E. coli has been determined from a 2.8 A resolution electron density map. The molecule is built up of a central core of three parallel and two antiparallel strands of pleated sheet surrounded by four helices. Thr residues involved in the active center 14-membered disulfide ring of thioredoxin form a protrusion between one of the helices and the middle strand of the pleated sheet. This region of the molecule, comprising two parallel strands joined by the protrusion and a helix, is structurally very similar to corresponding functionally important regions in the nucleotide-binding domains of flavodoxin and the dehydrogenases. The molecule has about 75% of the residues in well-defined secondary structures. The structure indicates that the carboxy-terminal third of the molecule forms an independent folding unit consisting of two strands of antiparallel pleated sheet and a terminal alpha-helix. This agress with the noncovalent reconstitution experiments from thioredoxin peptide fragments. Thioredoxin is an example of a protein with the active center located on a protrusion rather than in a cleft, thus demonstrating the existence of male proteins.


    Related Citations: 
    • Structure of Oxidized Thioredoxin to 4.5 Angstroms Resolution
      Soderberg, B.-O.,Holmgren, A.,Branden, C.-I.
      (1974) J.Mol.Biol. 90: 143



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THIOREDOXIN
A
108Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: trxA (fipA, tsnC)
Find proteins for P0AA25 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA25
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 89.700α = 90.00
b = 51.100β = 113.50
c = 60.300γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1976-05-06 
  • Released Date: 1976-05-19 
  • Deposition Author(s): Soderberg, B.-O.

Revision History 

  • Version 1.0: 1976-05-19
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other