2IFA

Crystal Structure of the PUTATIVE NITROREDUCTASE (SMU.260) IN COMPLEX WITH FMN FROM STREPTOCOCCUS MUTANS, NORTHEAST STRUCTURAL GENOMICS TARGET SMR5.

• PDB DOI: https://doi.org/10.2210/pdb2IFA/pdb
• Entry: 2IFA supersedes: 1YW3

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Streptococcus mutans UA159
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2006-09-20 Released: 2006-10-03 
• Deposition Author(s): Forouhar, F., Chen, Y., Xiao, R., Ma, L.C., Byler, T., Acton, T.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: 0.273 
• R-Value Work: 0.218 
• R-Value Observed: 0.218 

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)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

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

Biological assembly 3 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 144.72 kDa 
• Atom Count: 10,188 
• Modelled Residue Count: 1,202 
• Deposited Residue Count: 1,248 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein SMU.260	A, B, C, D, E, F	208	Streptococcus mutans UA159	Mutation(s): 4  Gene Names: SMU.260
UniProt
Find proteins for Q8DW21 (Streptococcus mutans serotype c (strain ATCC 700610 / UA159)) Explore Q8DW21  Go to UniProtKB:  Q8DW21

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FMN	G [auth A], H [auth B], I [auth C], J [auth D], K [auth E], L [auth F]	FLAVIN MONONUCLEOTIDE C17 H21 N4 O9 P FVTCRASFADXXNN-SCRDCRAPSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C, D, E, F	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: 0.273 
• R-Value Work: 0.218 
• R-Value Observed: 0.218 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 109.435	α = 90
b = 60.871	β = 117.83
c = 109.155	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
ADSC	data collection
DENZO	data reduction
SCALEPACK	data scaling
SnB	phasing
SOLVE	phasing
RESOLVE	phasing
XTALVIEW	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-10-03 
Deposition Author(s): Forouhar, F., Chen, Y., Xiao, R., Ma, L.C., Byler, T., Acton, T.B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)
• This entry supersedes: 1YW3

Revision History  

• Version 1.0: 2006-10-03
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description