9DC0 | pdb_00009dc0

Crystal Structure of European Robin CRY1

• PDB DOI: https://doi.org/10.2210/pdb9DC0/pdb

• Classification: CIRCADIAN CLOCK PROTEIN
• Organism(s): Erithacus rubecula
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-08-24 Released: 2025-08-27 
• Deposition Author(s): Wickramaratne, A., Chelliah, Y., Green, C.B., Takahashi, J.S., Zoltowski, B.D.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Howard Hughes Medical Institute (HHMI)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.91 Å
• R-Value Free: 
  0.274 (Depositor), 0.275 (DCC) 
• R-Value Work: 
  0.209 (Depositor), 0.210 (DCC) 
• R-Value Observed: 
  0.213 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of European Robin CRY1

Wickramaratne, A., Chelliah, Y., Green, C.B., Takahashi, J.S., Zoltowski, B.D.

To be published.

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 59.09 kDa 
• Atom Count: 4,167 
• Modeled Residue Count: 488 
• Deposited Residue Count: 515 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cryptochrome-1	A	515	Erithacus rubecula	Mutation(s): 0  Gene Names: CRY1b
UniProt
Find proteins for A0A7K7GUF1 (Erithacus rubecula) Explore A0A7K7GUF1  Go to UniProtKB:  A0A7K7GUF1

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.91 Å
• R-Value Free:  0.274 (Depositor), 0.275 (DCC) 
• R-Value Work:  0.209 (Depositor), 0.210 (DCC) 
• R-Value Observed: 0.213 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 44.115	α = 90
b = 79.602	β = 90
c = 127.986	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-27 
Deposition Author(s): Wickramaratne, A., Chelliah, Y., Green, C.B., Takahashi, J.S., Zoltowski, B.D.

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	2R15GM109282
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R35 GM127122
Howard Hughes Medical Institute (HHMI)	United States	Investigator Award

Revision History  

• Version 1.0: 2025-08-27
  Type: Initial release