4EOC

Crystal structure of h74q Synechocystis sp. PCYA

• PDB DOI: https://doi.org/10.2210/pdb4EOC/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Synechocystis sp. PCC 6803 substr. Kazusa
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2012-04-13 Released: 2012-08-29 
• Deposition Author(s): Kabasakal, B.V., Fisher, A.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.207 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 

Literature

Crystal structure of h74q Synechocystis sp. PCYA

Kabasakal, B.V., Gae, D.D., Fisher, A.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)

Macromolecule Content

• Total Structure Weight: 27.86 kDa 
• Atom Count: 2,356 
• Modelled Residue Count: 239 
• Deposited Residue Count: 239 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phycocyanobilin:ferredoxin oxidoreductase	A	239	Synechocystis sp. PCC 6803 substr. Kazusa	Mutation(s): 1  Gene Names: pcyA, slr0116 EC: 1.3.7.5
UniProt
Find proteins for Q55891 (Synechocystis sp. (strain ATCC 27184 / PCC 6803 / Kazusa)) Explore Q55891  Go to UniProtKB:  Q55891

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BLA	B [auth A]	BILIVERDINE IX ALPHA C33 H34 N4 O6 GWZYPXHJIZCRAJ-SRVCBVSDSA-N
CL	C [auth A], D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSO	A	L-PEPTIDE LINKING	C3 H7 N O3 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.207 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.4	α = 90
b = 94.88	β = 90
c = 42.57	γ = 90

Software Package:

Software Name	Purpose
Blu-Ice	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-08-29 
Deposition Author(s): Kabasakal, B.V., Fisher, A.J.

Revision History  

• Version 1.0: 2012-08-29
  Type: Initial release
  
• Version 1.1: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary