6WEM | pdb_00006wem

Crimson 0.9

• PDB DOI: https://doi.org/10.2210/pdb6WEM/pdb

• Classification: FLUORESCENT PROTEIN
• Organism(s): Entacmaea quadricolor
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2020-04-02 Released: 2021-04-07 
• Deposition Author(s): Ataie, N., Tran Tang, C., Sens, A., Lin, M.Z., Chu, J., Ng, H.L.
• Funding Organization(s): National Science Foundation (NSF, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.04 Å
• R-Value Free: 
  0.235 (Depositor), 0.235 (DCC) 
• R-Value Work: 
  0.191 (Depositor), 0.196 (DCC) 

Starting Model: experimental

Literature

Crimson 0.9

Ataie, N., Tran Tang, C., Sens, A., Lin, M.Z., Chu, J.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Biological Assembly 3  

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

Biological assembly 3 assigned by authors.

Biological Assembly 4  

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

Biological assembly 4 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 102.27 kDa 
• Atom Count: 7,461 
• Modeled Residue Count: 894 
• Deposited Residue Count: 900 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
mCrimson 0.9	A, B, C, D	225	Entacmaea quadricolor	Mutation(s): 0

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.04 Å
• R-Value Free:  0.235 (Depositor), 0.235 (DCC) 
• R-Value Work:  0.191 (Depositor), 0.196 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.546	α = 90
b = 90.046	β = 90
c = 129.518	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2021-04-07 
Deposition Author(s): Ataie, N., Tran Tang, C., Sens, A., Lin, M.Z., Chu, J., Ng, H.L.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, United States)	United States	1833181

Revision History  

• Version 1.0: 2021-04-07
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2023-11-15
  Changes: Data collection
• Version 2.0: 2026-03-18
  Changes: Polymer sequence, Structure summary