7L6P | pdb_00007l6p

Crystal structure of dihydropteroate synthase from Stenotrophomonas maltophilia with active site-bound imidazole

• PDB DOI: https://doi.org/10.2210/pdb7L6P/pdb

• Classification: TRANSFERASE
• Organism(s): Stenotrophomonas maltophilia K279a
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2020-12-23 Released: 2021-02-03 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free: 
  0.253 (Depositor), 0.252 (DCC) 
• R-Value Work: 
  0.198 (Depositor), 0.198 (DCC) 
• R-Value Observed: 
  0.201 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of dihydropteroate synthase from Stenotrophomonas maltophilia with active site-bound imidazole

Bolejack, M.J., Delker, S.L., Lorimer, D.D., Horanyi, P.S., Edwards, T.E.

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)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 65.91 kDa 
• Atom Count: 3,991 
• Modeled Residue Count: 530 
• Deposited Residue Count: 612 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Dihydropteroate synthase	A, B	306	Stenotrophomonas maltophilia K279a	Mutation(s): 0  Gene Names: folP, Smlt1734 EC: 2.5.1.15
UniProt
Find proteins for B2FL24 (Stenotrophomonas maltophilia (strain K279a)) Explore B2FL24  Go to UniProtKB:  B2FL24

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
IMD	C [auth A], D [auth B]	IMIDAZOLE C3 H5 N2 RAXXELZNTBOGNW-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free:  0.253 (Depositor), 0.252 (DCC) 
• R-Value Work:  0.198 (Depositor), 0.198 (DCC) 
• R-Value Observed: 0.201 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.74	α = 90
b = 68.81	β = 90
c = 155.12	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PDB_EXTRACT	data extraction
MR-Rosetta	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-02-03 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2021-02-03
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2025-10-22
  Changes: Structure summary