1GCB

GAL6, YEAST BLEOMYCIN HYDROLASE DNA-BINDING PROTEASE (THIOL)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a conserved protease that binds DNA: the bleomycin hydrolase, Gal6.

Joshua-Tor, L.Xu, H.E.Johnston, S.A.Rees, D.C.

(1995) Science 269: 945-950


  • PubMed Abstract: 
  • Bleomycin hydrolase is a cysteine protease that hydrolyzes the anticancer drug bleomycin. The homolog in yeast, Gal6, has recently been identified and found to bind DNA and to act as a repressor in the Gal4 regulatory system. The crystal structure of ...

    Bleomycin hydrolase is a cysteine protease that hydrolyzes the anticancer drug bleomycin. The homolog in yeast, Gal6, has recently been identified and found to bind DNA and to act as a repressor in the Gal4 regulatory system. The crystal structure of Gal6 at 2.2 A resolution reveals a hexameric structure with a prominent central channel. The papain-like active sites are situated within the central channel, in a manner resembling the organization of active sites in the proteasome. The Gal6 channel is lined with 60 lysine residues from the six subunits, suggesting a role in DNA binding. The carboxyl-terminal arm of Gal6 extends into the active site cleft and may serve a regulatory function. Rather than each residing in distinct, separable domains, the protease and DNA-binding activities appear structurally intertwined in the hexamer, implying a coupling of these two activities.


    Related Citations: 
    • Yeast Bleomycin Hydrolase is a DNA-Binding Cysteine Protease: Identification, Purification, Biochemical Characterization
      Xu, H.E.,Johnston, S.A.
      (1994) J.Biol.Chem. 269: 21177


    Organizational Affiliation

    Divison of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAL6 HG (EMTS) DERIVATIVE
A
454Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: LAP3 (BLH1, GAL6, YCP1)
EC: 3.4.22.40
Find proteins for Q01532 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: LAP3
Go to UniProtKB:  Q01532
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
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
HG
Query on HG

Download SDF File 
Download CCD File 
A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.209 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 151.150α = 90.00
b = 151.150β = 90.00
c = 89.880γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
MSCdata reduction
X-PLORphasing
X-PLORmodel building
CCP4data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance