4IL3

Crystal Structure of S. mikatae Ste24p


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.271 

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
  • Primary Citation of Related Structures:  
    4IL3

  • 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 aliphatic residue and X is any residue) ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ste24pA, B461Saccharomyces mikataeMutation(s): 0 
EC: 3.4.24.84
Membrane Entity: Yes 
UniProt
Find proteins for M4GGS2 (Saccharomyces mikatae)
Explore M4GGS2 
Go to UniProtKB:  M4GGS2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.271 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 143.53α = 90
b = 143.53β = 90
c = 197.024γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
RESOLVEphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
MAR345data collection
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History 

Revision History  (Full details and data files)

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