4N3C

Crystal Structure of human O-GlcNAc Transferase bound to a peptide from HCF-1 pro-repeat2(1-26) and UDP-GlcNAc


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

HCF-1 is cleaved in the active site of O-GlcNAc transferase.

Lazarus, M.B.Jiang, J.Kapuria, V.Bhuiyan, T.Janetzko, J.Zandberg, W.F.Vocadlo, D.J.Herr, W.Walker, S.

(2013) Science 342: 1235-1239

  • DOI: 10.1126/science.1243990
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Host cell factor-1 (HCF-1), a transcriptional co-regulator of human cell-cycle progression, undergoes proteolytic maturation in which any of six repeated sequences is cleaved by the nutrient-responsive glycosyltransferase, O-linked N-acetylglucosamin ...

    Host cell factor-1 (HCF-1), a transcriptional co-regulator of human cell-cycle progression, undergoes proteolytic maturation in which any of six repeated sequences is cleaved by the nutrient-responsive glycosyltransferase, O-linked N-acetylglucosamine (O-GlcNAc) transferase (OGT). We report that the tetratricopeptide-repeat domain of O-GlcNAc transferase binds the carboxyl-terminal portion of an HCF-1 proteolytic repeat such that the cleavage region lies in the glycosyltransferase active site above uridine diphosphate-GlcNAc. The conformation is similar to that of a glycosylation-competent peptide substrate. Cleavage occurs between cysteine and glutamate residues and results in a pyroglutamate product. Conversion of the cleavage site glutamate into serine converts an HCF-1 proteolytic repeat into a glycosylation substrate. Thus, protein glycosylation and HCF-1 cleavage occur in the same active site.


    Organizational Affiliation

    Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110 kDa subunit
A
723Homo sapiensMutation(s): 0 
Gene Names: OGT
EC: 2.4.1.255
Find proteins for O15294 (Homo sapiens)
Go to Gene View: OGT
Go to UniProtKB:  O15294
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Host cell factor 1
B
26Homo sapiensMutation(s): 0 
Gene Names: HCFC1 (HCF1, HFC1)
Find proteins for P51610 (Homo sapiens)
Go to Gene View: HCFC1
Go to UniProtKB:  P51610
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UD1
Query on UD1

Download SDF File 
Download CCD File 
A
URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
C17 H27 N3 O17 P2
LFTYTUAZOPRMMI-CFRASDGPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.184 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 98.880α = 90.00
b = 98.880β = 90.00
c = 365.930γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
PHENIXphasing
SCALAdata scaling
PDB_EXTRACTdata extraction
CBASSdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-01
    Type: Initial release