4IL3

Crystal Structure of S. mikatae Ste24p


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.102 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.270 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the integral membrane protein CAAX protease Ste24p.

Pryor, E.E.Horanyi, P.S.Clark, K.M.Fedoriw, N.Connelly, S.M.Koszelak-Rosenblum, M.Zhu, G.Malkowski, M.G.Wiener, M.C.Dumont, M.E.

(2013) Science 339: 1600-1604

  • DOI: 10.1126/science.1232048

  • PubMed Abstract: 
  • Posttranslational lipidation provides critical modulation of the functions of some proteins. Isoprenoids (i.e., farnesyl or geranylgeranyl groups) are attached to cysteine residues in proteins containing C-terminal CAAX sequence motifs (where A is an ...

    Posttranslational lipidation provides critical modulation of the functions of some proteins. Isoprenoids (i.e., farnesyl or geranylgeranyl groups) are attached to cysteine residues in proteins containing C-terminal CAAX sequence motifs (where A is an aliphatic residue and X is any residue). Isoprenylation is followed by cleavage of the AAX amino acid residues and, in some cases, by additional proteolytic cuts. We determined the crystal structure of the CAAX protease Ste24p, a zinc metalloprotease catalyzing two proteolytic steps in the maturation of yeast mating pheromone a-factor. The Ste24p core structure is a ring of seven transmembrane helices enclosing a voluminous cavity containing the active site and substrate-binding groove. The cavity is accessible to the external milieu by means of gaps between splayed transmembrane helices. We hypothesize that cleavage proceeds by means of a processive mechanism of substrate insertion, translocation, and ejection.


    Organizational Affiliation

    Membrane Protein Structural Biology Consortium, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ste24p
A, B
461Saccharomyces mikataeEC: 3.4.24.84
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Intramembrane Proteases
Protein: 
CAAX protease Ste24p
Find proteins for M4GGS2 (Saccharomyces mikatae)
Go to UniProtKB:  M4GGS2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.102 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.270 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 143.530α = 90.00
b = 143.530β = 90.00
c = 197.024γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MAR345data collection
PDB_EXTRACTdata extraction
PHENIXrefinement
DENZOdata reduction
PHASERphasing
PHENIXphasing
RESOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2013-02-20
    Type: Initial release
  • Version 1.1: 2013-04-03
    Type: Database references
  • Version 1.2: 2013-06-19
    Type: Database references
  • Version 1.3: 2017-11-15
    Type: Refinement description