Biological Assembly 1  

Global Symmetry: Cyclic - C4  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 23.28 kDa 
• Atom Count: 1,675 
• Modelled Residue Count: 185 
• Deposited Residue Count: 201 
• Unique protein chains: 1

 1REC

THREE-DIMENSIONAL STRUCTURE OF RECOVERIN, A CALCIUM SENSOR IN VISION

• PDB DOI: 10.2210/pdb1REC/pdb

• Classification: CALCIUM-BINDING PROTEIN
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1993-10-29 Released: 1994-01-31 
• Deposition Author(s): Flaherty, K.M., Zozulya, S., Stryer, L., Mckay, D.B.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.191 
• R-Value Observed: 0.191 

Literature

Three-Dimensional Structure of Recoverin, a Calcium Sensor in Vision

Flaherty, K.M., Zozulya, S., Stryer, L., McKay, D.B.

(1993) Cell 75: 709-716

• PubMed: 8242744 
• DOI: 10.1016/0092-8674(93)90491-8
• Primary Citation of Related Structures:  
  1REC


• PubMed Abstract: 
  

Recoverin, a recently discovered member of the EF hand superfamily, serves as a calcium sensor in vision. We report here the crystal structure of recombinant unmyristoylated recoverin at 1.9 A resolution. The four EF hands of the protein are arranged in a compact array that contrasts with the dumbbell shape of calmodulin and troponin C. A calcium ion is bound to EF hand 3, while EF hand 2 can bind samarium but not calcium in this crystal form. The other two EF hands have novel structural features that prevent or impair calcium binding. A concave hydrophobic surface formed by EF hands 1 and 2 may participate in the read out of calcium signals by recoverin and its homologs.

---

Related Citations: 

• Cloning, Expression, and Crystallization of Recoverin, a Calcium Sensor in Vision
  Ray, S., Zozulya, S., Niemi, G.A., Flaherty, K.M., Brolley, D., Dizhoor, A.M., Mckay, D.B., Hurley, J., Stryer, L.
  (1992) Proc Natl Acad Sci U S A 89: 5705

---

Organizational Affiliation: 

Beckman Laboratories for Structural Biology, Department of Cell Biology, Stanford University School of Medicine, California 94305.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RECOVERIN	A	201	Bos taurus	Mutation(s): 0  Gene Names: RCVRN, RCV1
UniProt
Find proteins for P21457 (Bos taurus) Explore P21457  Go to UniProtKB:  P21457

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.191 
• R-Value Observed: 0.191 
• Space Group: I 4

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.1	α = 90
b = 85.1	β = 90
c = 60	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-01-31 
Deposition Author(s): Flaherty, K.M., Zozulya, S., Stryer, L., Mckay, D.B.

Revision History  

• Version 1.0: 1994-01-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance