3GU3

Crystal Structure of the methyltransferase BC_2162 in complex with S-Adenosyl-L-Homocysteine from Bacillus cereus, Northeast Structural Genomics Consortium Target BcR20

• PDB DOI: https://doi.org/10.2210/pdb3GU3/pdb

• Classification: TRANSFERASE
• Organism(s): Bacillus cereus ATCC 14579
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-03-28 Released: 2009-04-07 
• Deposition Author(s): Forouhar, F., Neely, H., Seetharaman, J., Ciano, C., Ma, L., Zhao, L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.212 
• R-Value Work: 0.184 
• R-Value Observed: 0.185 

Literature

Northeast Structural Genomics Consortium Target BcR20

Forouhar, F., Neely, H., Seetharaman, J., Ciano, C., Ma, L., Zhao, L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 66.76 kDa 
• Atom Count: 4,777 
• Modelled Residue Count: 552 
• Deposited Residue Count: 568 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methyltransferase	A, B	284	Bacillus cereus ATCC 14579	Mutation(s): 0  Gene Names: BC_2162 EC: 2.1.1
UniProt
Find proteins for Q81E32 (Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711)) Explore Q81E32  Go to UniProtKB:  Q81E32

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH	D [auth A], F [auth B]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
ACT	C [auth A], E [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.212 
• R-Value Work: 0.184 
• R-Value Observed: 0.185 
• Space Group: P 3₂

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 90.793	α = 90
b = 90.793	β = 90
c = 122.627	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
SnB	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-04-07 
Deposition Author(s): Forouhar, F., Neely, H., Seetharaman, J., Ciano, C., Ma, L., Zhao, L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2009-04-07
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2011-08-24
  Changes: Structure summary
• Version 1.3: 2017-11-01
  Changes: Refinement description
• Version 1.4: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.5: 2024-11-27
  Changes: Data collection, Database references, Derived calculations, Structure summary