6DAU

Crystal structure of E33Q and E41Q mutant forms of the spermidine/spermine N-acetyltransferase SpeG from Vibrio cholerae

• PDB DOI: https://doi.org/10.2210/pdb6DAU/pdb

• Classification: TRANSFERASE
• Organism(s): Vibrio cholerae O1 biovar El Tor
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2018-05-02 Released: 2018-07-04 
• Deposition Author(s): Filippova, E.V., Minasov, G., Beahan, A., Kulyavtsev, P., Tan, L., Tran, D., Kuhn, M.L., Anderson, W.F., Satchell, K.J.F., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.26 Å
• R-Value Free: 0.216 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 

Starting Model: experimental

Literature

Crystal structure of E33Q and E41Q mutant forms of the spermidine/spermine N-acetyltransferase SpeG from Vibrio cholerae.

Filippova, E.V., Minasov, G., Beahan, A., Kulyavtsev, P., Anderson, W.F., Satchell, K.J.F., Joachimiak, A.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D6  (Explore in 3D)
Global Stoichiometry: Homo 12-mer - A12 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 124.48 kDa 
• Atom Count: 8,878 
• Modelled Residue Count: 1,014 
• Deposited Residue Count: 1,038 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Spermidine N1-acetyltransferase	A, B, C, D, E, F	173	Vibrio cholerae O1 biovar El Tor	Mutation(s): 2  Gene Names: C4E16_17415 EC: 2.3.1.57
UniProt
Find proteins for Q9KL03 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KL03  Go to UniProtKB:  Q9KL03

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	G [auth A], H [auth C], I [auth D]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.26 Å
• R-Value Free: 0.216 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 
• Space Group: C 1 2 1
• Diffraction Data: https://doi.org/10.18430/m36dau

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 160.235	α = 90
b = 133.016	β = 113.39
c = 77.711	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
BLU-MAX	data collection
HKL-3000	data reduction
HKL-3000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-07-04 
Deposition Author(s): Filippova, E.V., Minasov, G., Beahan, A., Kulyavtsev, P., Tan, L., Tran, D., Kuhn, M.L., Anderson, W.F., Satchell, K.J.F., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	--

Revision History  

• Version 1.0: 2018-07-04
  Type: Initial release
  
• Version 1.1: 2019-12-18
  Changes: Author supporting evidence
• Version 1.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description