3LDF

Crystal structure of SMU.776, a putative methyltransferase complexed with SAH

• PDB DOI:  https://doi.org/10.2210/pdb3LDF/pdb

• Classification: TRANSFERASE
• Organism(s): Streptococcus mutans UA159
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-01-13 Released: 2011-01-19 
• Deposition Author(s): Wang, K.-T., Nan, J., Su, X.-D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.23 Å
• R-Value Free: 0.232 
• R-Value Work: 0.173 
• R-Value Observed: 0.176 

Literature

Crystal structure of SMU.776 complexed with SAH

Wang, K.-T., Nan, J., Su, X.-D.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 44.12 kDa 
• Atom Count: 3,284 
• Modelled Residue Count: 380 
• Deposited Residue Count: 385 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative uncharacterized protein SMU.776	A	385	Streptococcus mutans UA159	Mutation(s): 0  Gene Names: SMU_776
UniProt
Find proteins for Q8DUW5 (Streptococcus mutans serotype c (strain ATCC 700610 / UA159)) Explore Q8DUW5  Go to UniProtKB:  Q8DUW5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH	B [auth A]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.23 Å
• R-Value Free: 0.232 
• R-Value Work: 0.173 
• R-Value Observed: 0.176 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 165.684	α = 90
b = 50.828	β = 107.14
c = 59.569	γ = 90

Software Package:

Software Name	Purpose
PROTEUM PLUS	data collection
MOLREP	phasing
REFMAC	refinement
PROTEUM PLUS	data reduction
PROTEUM PLUS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-01-19 
Deposition Author(s): Wang, K.-T., Nan, J., Su, X.-D.

Revision History  

• Version 1.0: 2011-01-19
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description