1CMX

STRUCTURAL BASIS FOR THE SPECIFICITY OF UBIQUITIN C-TERMINAL HYDROLASES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.248 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for the specificity of ubiquitin C-terminal hydrolases.

Johnston, S.C.Riddle, S.M.Cohen, R.E.Hill, C.P.

(1999) EMBO J 18: 3877-3887

  • DOI: 10.1093/emboj/18.14.3877
  • Primary Citation of Related Structures:  
    1CMX

  • PubMed Abstract: 
  • The release of ubiquitin from attachment to other proteins and adducts is critical for ubiquitin biosynthesis, proteasomal degradation and other cellular processes. De-ubiquitination is accomplished in part by members of the UCH (ubiquitin C-terminal ...

    The release of ubiquitin from attachment to other proteins and adducts is critical for ubiquitin biosynthesis, proteasomal degradation and other cellular processes. De-ubiquitination is accomplished in part by members of the UCH (ubiquitin C-terminal hydrolase) family of enzymes. We have determined the 2.25 A resolution crystal structure of the yeast UCH, Yuh1, in a complex with the inhibitor ubiquitin aldehyde (Ubal). The structure mimics the tetrahedral intermediate in the reaction pathway and explains the very high enzyme specificity. Comparison with a related, unliganded UCH structure indicates that ubiquitin binding is coupled to rearrangements which block the active-site cleft in the absence of authentic substrate. Remarkably, a 21-residue loop that becomes ordered upon binding Ubal lies directly over the active site. Efficiently processed substrates apparently pass through this loop, and constraints on the loop conformation probably function to control UCH specificity.


    Related Citations: 
    • Crystal Structure of a Deubiquitinating Enzyme (Human Uch-L3) at 1.8 A Resolution
      Johnston, S.C., Larsen, C.N., Cook, W.J., Wilkinson, K.D., Hill, C.P.
      (1997) EMBO J 16: 3787

    Organizational Affiliation

    Department of Biochemistry, University of Iowa, Iowa City, IA 52242, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (UBIQUITIN YUH1-UBAL)AC235N/AMutation(s): 0 
EC: 3.1.2.15
Find proteins for P35127 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P35127 
Go to UniProtKB:  P35127
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (UBIQUITIN YUH1-UBAL)BD76N/AMutation(s): 0 
EC: 3.1.2.15
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
NIH Common Fund Data Resources
PHAROS  P0CG48
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
GLZ
Query on GLZ
B,DL-PEPTIDE LINKINGC2 H5 N OGLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.248 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 199.3α = 90
b = 199.3β = 90
c = 36.8γ = 120
Software Package:
Software NamePurpose
CCP4model building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
CCP4phasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-07-27
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance