4QUR

Crystal Structure of stachydrine demethylase in complex with cyanide, oxygen, and N-methyl proline in a new orientation

• PDB DOI: https://doi.org/10.2210/pdb4QUR/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Sinorhizobium meliloti 1021
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-07-11 Released: 2015-07-15 
• Deposition Author(s): Agarwal, R., Andi, B., Gizzi, A., Bonanno, J.B., Almo, S.C., Orville, A.M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 0.228 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 

Literature

Tracking photoelectron induced in-crystallo enzyme catalysis

Agarwal, R., Andi, B., Gizzi, A., Bonanno, J.B., Almo, S.C., Orville, A.M.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 49.82 kDa 
• Atom Count: 3,561 
• Modelled Residue Count: 415 
• Deposited Residue Count: 435 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
monoxygenase; demethylase	A	435	Sinorhizobium meliloti 1021	Mutation(s): 0  Gene Names: SMa0751 EC: 1
UniProt
Find proteins for Q92ZP9 (Rhizobium meliloti (strain 1021)) Explore Q92ZP9  Go to UniProtKB:  Q92ZP9

Small Molecules

Ligands 7 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FES	B [auth A]	FE2/S2 (INORGANIC) CLUSTER Fe2 S2 NIXDOXVAJZFRNF-UHFFFAOYSA-N
NCO	E [auth A]	COBALT HEXAMMINE(III) Co H18 N6 DYLMFCCYOUSRTK-UHFFFAOYSA-N
3BY	F [auth A]	1-methyl-L-proline C6 H11 N O2 CWLQUGTUXBXTLF-YFKPBYRVSA-N
TRS	D [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
FE	C [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N
OXY	G [auth A]	OXYGEN MOLECULE O2 MYMOFIZGZYHOMD-UHFFFAOYSA-N
CYN	H [auth A]	CYANIDE ION C N XFXPMWWXUTWYJX-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 0.228 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 
• Space Group: P 6₃ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 98.065	α = 90
b = 98.065	β = 90
c = 178.654	γ = 120

Software Package:

Software Name	Purpose
CBASS	data collection
MOLREP	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-07-15 
Deposition Author(s): Agarwal, R., Andi, B., Gizzi, A., Bonanno, J.B., Almo, S.C., Orville, A.M.

Revision History  

• Version 1.0: 2015-07-15
  Type: Initial release
  
• Version 1.1: 2015-10-14
  Changes: Non-polymer description
• Version 1.2: 2016-03-09
  Changes: Structure summary
• Version 1.3: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description