3F1K

Crystal Structure of yciK from E. coli, an oxidoreductase, complexed with NADP+ at 2.6A resolution

• PDB DOI: https://doi.org/10.2210/pdb3F1K/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-10-28 Released: 2008-11-18 
• Deposition Author(s): Vijayalakshmi, J., Woodard, R.W.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.261 
• R-Value Work: 0.211 
• R-Value Observed: 0.216 

Literature

Structure of an oxidoreductase, yciK from E. coli, in two crystal forms - NADP+ unbound structure at 0.95 A resolution

Vijayalakshmi, J., Meredith, T.C., Woodard, R.W.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29.08 kDa 
• Atom Count: 2,053 
• Modelled Residue Count: 252 
• Deposited Residue Count: 252 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized oxidoreductase yciK	A	252	Escherichia coli K-12	Mutation(s): 0  Gene Names: b1271, JW1263, yciK EC: 1
UniProt
Find proteins for P31808 (Escherichia coli (strain K12)) Explore P31808  Go to UniProtKB:  P31808

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAP	B [auth A]	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H28 N7 O17 P3 XJLXINKUBYWONI-NNYOXOHSSA-N

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.261 
• R-Value Work: 0.211 
• R-Value Observed: 0.216 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 88.509	α = 90
b = 88.509	β = 90
c = 80.419	γ = 120

Software Package:

Software Name	Purpose
d*TREK	data processing
PHENIX	refinement
PDB_EXTRACT	data extraction
d*TREK	data reduction
d*TREK	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-11-18 
Deposition Author(s): Vijayalakshmi, J., Woodard, R.W.

Revision History  

• Version 1.0: 2008-11-18
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-12-27
  Changes: Data collection, Database references, Derived calculations