Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29351.89 
• Atom Count: 1792 
• Residue Count: 246 
• Unique protein chains: 1

4AYL

Molecular structure of a metal-independent bacterial glycosyltransferase that catalyzes the synthesis of histo-blood group A antigen

• DOI: 10.2210/pdb4AYL/pdb

• Classification: TRANSFERASE
• Organism(s): Bacteroides ovatus (strain ATCC 8483 / DSM 1896 / JCM 5824 / NCTC 11153)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2012-06-21 Released: 2012-12-19 
• Deposition Author(s): Thiyagarajan, N., Pham, T.T.K., Stinsonb, B., Sundriyala, A., Tumbale, P., Lizotte-Waniewskib, M., Brewb, K., Acharya, K.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.919 Å
• R-Value Free: 0.226 
• R-Value Work: 0.179 

Literature

Structure of a Metal-Independent Bacterial Glycosyltransferase that Catalyzes the Synthesis of Histo-Blood Group a Antigen

Thiyagarajan, N., Pham, T.T.K., Stinson, B., Sundriyal, A., Tumbale, P., Lizotte-Waniewski, M., Brew, K., Acharya, K.R.

(2012) Sci.Rep. 2: 940

• PubMed: 23230506 
• DOI: 10.1038/srep00940
• Primary Citation of Related Structures:  
  4AYJ


• PubMed Abstract: 
  

Histo-blood group antigens (HBGAs) are a source of antigenic variation between individuals that modulates resistance and susceptibility to pathogens and is a barrier to the spread of enveloped viruses. HBGAs are also produced by a few prokaryotes where they are synthesized by glycosyltransferases (GTs) related to human HBGA synthases. Here we report the first structure of a bacterial GT of this family, from an intestinal resident, Bacteroides ovatus. Unlike its mammalian homologues and other GTs with similar folds, this protein lacks a metal-binding Asp-X-Asp motif and is fully active in the absence of divalent metal ions, yet is strikingly similar in structure and in its interactions with substrates to structurally characterized mammalian metal-dependent mammalian homologues. This shows how an apparently major divergence in catalytic properties can be accommodated by minor structural adjustments and illustrates the structural underpinnings of horizontal transfer of a functional gene from prokaryotes to vertebrates.

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Organizational Affiliation: 

Department of Biology and Biochemistry, University of Bath , Claverton Down, Bath BA2 7AY, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
BOGT-METAL-INDEPENDENT GLYCOSYLTRANSFERASE	A	246	Bacteroides ovatus (strain ATCC 8483 / DSM 1896 / JCM 5824 / NCTC 11153)	Mutation(s): 0
Find proteins for A7LVT2 (Bacteroides ovatus (strain ATCC 8483 / DSM 1896 / JCM 5824 / NCTC 11153)) Go to UniProtKB:  A7LVT2

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
EPE	A	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID HEPES C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
CL	A	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
CA	A	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.919 Å
• R-Value Free: 0.226 
• R-Value Work: 0.179 
• Space Group: P 4₃ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 41.227	α = 90.00
b = 41.227	β = 90.00
c = 282.944	γ = 90.00

Software Package:

Software Name	Purpose
MrBUMP	phasing
PHENIX	refinement
HKL-2000	data scaling
HKL-2000	data reduction
CHAINSAW	phasing
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-06-21 
• Released Date: 2012-12-19 
• Deposition Author(s): Thiyagarajan, N., Pham, T.T.K., Stinsonb, B., Sundriyala, A., Tumbale, P., Lizotte-Waniewskib, M., Brewb, K., Acharya, K.R.

Revision History 

• Version 1.0: 2012-12-19
  Type: Initial release
• Version 1.1: 2012-12-26
  Type: Database references
• Version 1.2: 2013-10-09
  Type: Database references
• Version 1.3: 2014-01-29
  Type: Database references
• Version 1.4: 2015-02-25
  Type: Database references