3IAA

Crystal Structure of CalG2, Calicheamicin Glycosyltransferase, TDP bound form

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Complete set of glycosyltransferase structures in the calicheamicin biosynthetic pathway reveals the origin of regiospecificity.

Chang, A., Singh, S., Helmich, K.E., Goff, R.D., Bingman, C.A., Thorson, J.S., Phillips, G.N.

(2011) Proc Natl Acad Sci U S A 108: 17649-17654

  • DOI: 10.1073/pnas.1108484108
  • Primary Citation of Related Structures:  
    3OTH, 3OTI, 3OTG, 3RSC, 3IAA, 3IA7

  • PubMed Abstract: 

    • Glycosyltransferases are useful synthetic catalysts for generating natural products with sugar moieties. Although several natural product glycosyltransferase structures have been reported, design principles of glycosyltransferase engineering for the gene ...

    Glycosyltransferases are useful synthetic catalysts for generating natural products with sugar moieties. Although several natural product glycosyltransferase structures have been reported, design principles of glycosyltransferase engineering for the generation of glycodiversified natural products has fallen short of its promise, partly due to a lack of understanding of the relationship between structure and function. Here, we report structures of all four calicheamicin glycosyltransferases (CalG1, CalG2, CalG3, and CalG4), whose catalytic functions are clearly regiospecific. Comparison of these four structures reveals a conserved sugar donor binding motif and the principles of acceptor binding region reshaping. Among them, CalG2 possesses a unique catalytic motif for glycosylation of hydroxylamine. Multiple glycosyltransferase structures in a single natural product biosynthetic pathway are a valuable resource for understanding regiospecific reactions and substrate selectivities and will help future glycosyltransferase engineering.

    Organizational Affiliation: 

    Department of Biochemistry, University of Wisconsin, 433 Babcock Drive, Madison, WI 53706, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CalG2 A, B416Micromonospora echinosporaMutation(s): 0 
Gene Names: calG2, Q8KNE0
Find proteins for Q8KNE0 (Micromonospora echinospora)
Explore Q8KNE0 
Go to UniProtKB:  Q8KNE0
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TYD
Query on TYD
Download Ideal Coordinates CCD File 
A, B
THYMIDINE-5'-DIPHOSPHATE
C10 H16 N2 O11 P2
UJLXYODCHAELLY-XLPZGREQSA-N		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		A,BL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.787α = 90
b = 48.539β = 101.79
c = 107.565γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
RESOLVEphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-06-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-11-02
    Changes: Database references
  • Version 1.3: 2017-11-01
    Changes: Refinement description