6APL

Crystal Structure of human ST6GALNAC2 in complex with CMP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Expression system for structural and functional studies of human glycosylation enzymes.

Moremen, K.W.Ramiah, A.Stuart, M.Steel, J.Meng, L.Forouhar, F.Moniz, H.A.Gahlay, G.Gao, Z.Chapla, D.Wang, S.Yang, J.Y.Prabhakar, P.K.Johnson, R.Rosa, M.D.Geisler, C.Nairn, A.V.Seetharaman, J.Wu, S.C.Tong, L.Gilbert, H.J.LaBaer, J.Jarvis, D.L.

(2018) Nat. Chem. Biol. 14: 156-162

  • DOI: 10.1038/nchembio.2539
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Vertebrate glycoproteins and glycolipids are synthesized in complex biosynthetic pathways localized predominantly within membrane compartments of the secretory pathway. The enzymes that catalyze these reactions are exquisitely specific, yet few have ...

    Vertebrate glycoproteins and glycolipids are synthesized in complex biosynthetic pathways localized predominantly within membrane compartments of the secretory pathway. The enzymes that catalyze these reactions are exquisitely specific, yet few have been extensively characterized because of challenges associated with their recombinant expression as functional products. We used a modular approach to create an expression vector library encoding all known human glycosyltransferases, glycoside hydrolases, and sulfotransferases, as well as other glycan-modifying enzymes. We then expressed the enzymes as secreted catalytic domain fusion proteins in mammalian and insect cell hosts, purified and characterized a subset of the enzymes, and determined the structure of one enzyme, the sialyltransferase ST6GalNAcII. Many enzymes were produced at high yields and at similar levels in both hosts, but individual protein expression levels varied widely. This expression vector library will be a transformative resource for recombinant enzyme production, broadly enabling structure-function studies and expanding applications of these enzymes in glycochemistry and glycobiology.


    Organizational Affiliation

    Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase 2
A, B, C, D, E, F
374Homo sapiensMutation(s): 0 
Gene Names: ST6GALNAC2 (SIAT7B, SIATL1, STHM)
EC: 2.4.99.3
Find proteins for Q9UJ37 (Homo sapiens)
Go to Gene View: ST6GALNAC2
Go to UniProtKB:  Q9UJ37
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C5P
Query on C5P

Download SDF File 
Download CCD File 
A, B, C, D, E, F
CYTIDINE-5'-MONOPHOSPHATE
C9 H14 N3 O8 P
IERHLVCPSMICTF-XVFCMESISA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D, F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.196 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 71.168α = 103.69
b = 71.125β = 97.26
c = 138.608γ = 103.03
Software Package:
Software NamePurpose
PHENIXrefinement
MOLREPphasing
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2018-01-03
    Type: Database references
  • Version 1.2: 2018-01-24
    Type: Database references