8FRE

Designed loop protein RBL4

• PDB DOI: https://doi.org/10.2210/pdb8FRE/pdb

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


• Deposited: 2023-01-06 Released: 2024-04-17 
• Deposition Author(s): Jude, K.M., Jiang, H., Baker, D., Garcia, K.C.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.281 
• R-Value Work: 0.234 
• R-Value Observed: 0.236 

Literature

Designed repeat proteins with buttressed loops

Jiang, H., Jude, K.M., Garcia, K.C., Baker, D.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: SAXS, gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 46.89 kDa 
• Atom Count: 3,216 
• Modelled Residue Count: 410 
• Deposited Residue Count: 432 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RBL4	A, B	216	synthetic construct	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	C [auth A], D [auth A], E [auth A], F [auth A], G [auth B], H [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.281 
• R-Value Work: 0.234 
• R-Value Observed: 0.236 
• Space Group: P 2₁ 2₁ 2
• Diffraction Data: https://doi.org/10.15785/SBGRID/980

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.287	α = 90
b = 215.442	β = 90
c = 28.008	γ = 90

Software Package:

Software Name	Purpose
autoPROC	data reduction
PHENIX	refinement
PHASER	phasing
Aimless	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-04-17 
Deposition Author(s): Jude, K.M., Jiang, H., Baker, D., Garcia, K.C.

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Funding Organization	Location	Grant Number
Howard Hughes Medical Institute (HHMI)	United States	--

Revision History  

• Version 1.0: 2024-04-17
  Type: Initial release