9FFI | pdb_00009ffi

mScarlet (SG C5) - Directionality of Optical Properties of Fluorescent Proteins

• PDB DOI: https://doi.org/10.2210/pdb9FFI/pdb

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


• Deposited: 2024-05-23 Released: 2025-06-04 
• Deposition Author(s): Myskova, J., Brynda, J., Lazar, J.
• Funding Organization(s): Ministry of Education, Youth and Sports of the Czech Republic, Czech Science Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.224 (Depositor), 0.226 (DCC) 
• R-Value Work: 
  0.190 (Depositor), 0.195 (DCC) 
• R-Value Observed: 
  0.191 (Depositor) 

Starting Model: experimental

Literature

Directionality of Optical Properties of Fluorescent Proteins

Myskova, J., Brynda, J., Khoroshyy, P., Lazar, J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 30.43 kDa 
• Atom Count: 1,919 
• Modeled Residue Count: 223 
• Deposited Residue Count: 265 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
mScarlet	A	265	synthetic construct	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.224 (Depositor), 0.226 (DCC) 
• R-Value Work:  0.190 (Depositor), 0.195 (DCC) 
• R-Value Observed: 0.191 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.892	α = 90
b = 45.098	β = 101.78
c = 58.294	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XSCALE	data scaling
XDS	data reduction
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-06-04 
Deposition Author(s): Myskova, J., Brynda, J., Lazar, J.

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Funding Organization	Location	Grant Number
Ministry of Education, Youth and Sports of the Czech Republic	Czech Republic	CZ.02.1.01/0.0/0.0/16_019/0000729
Czech Science Foundation	Czech Republic	23-05983S

Revision History  

• Version 1.0: 2025-06-04
  Type: Initial release