4NWS

Crystal structure of PSLssmKate, a photoswitchable LSSmKate variant

• PDB DOI: https://doi.org/10.2210/pdb4NWS/pdb

• Classification: FLUORESCENT PROTEIN
• Organism(s): synthetic construct
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-12-06 Released: 2014-09-17 
• Deposition Author(s): Malashkevich, V.N., Piatkevich, K., Almo, S.C., Verkhusha, V.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.253 
• R-Value Work: 0.179 
• R-Value Observed: 0.182 

Starting Model: experimental

Literature

Crystal structure of PSLssmKate, a photoswitchable LSSmKate variant

Malashkevich, V.N., Piatkevich, K., Almo, S.C., Verkhusha, V.

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)

Macromolecule Content

• Total Structure Weight: 55.25 kDa 
• Atom Count: 3,674 
• Modelled Residue Count: 448 
• Deposited Residue Count: 486 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
fluorescent protein	A, B	243	synthetic construct	Mutation(s): 0
UniProt
Find proteins for D0VX33 (Entacmaea quadricolor) Explore D0VX33  Go to UniProtKB:  D0VX33

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
NRQ	A, B	L-PEPTIDE LINKING	C16 H17 N3 O4 S		MET, TYR, GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.253 
• R-Value Work: 0.179 
• R-Value Observed: 0.182 
• Space Group: I 4

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.032	α = 90
b = 99.032	β = 90
c = 106.614	γ = 90

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-09-17 
Deposition Author(s): Malashkevich, V.N., Piatkevich, K., Almo, S.C., Verkhusha, V.

Revision History  

• Version 1.0: 2014-09-17
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2023-12-06
  Changes: Data collection