7XG7 | pdb_00007xg7

Crystal structure of PstS protein from cyanophage Syn19

• PDB DOI: https://doi.org/10.2210/pdb7XG7/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Synechococcus phage Syn19
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2022-04-03 Released: 2023-02-08 
• Deposition Author(s): Cai, K., Jiang, Y.L.
• Funding Organization(s): Not funded

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 
  0.183 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.164 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.165 (Depositor) 

Starting Model: experimental

Literature

Biochemical and structural characterization of the cyanophage-encoded phosphate-binding protein: implications for enhanced phosphate uptake of infected cyanobacteria

Zhao, F., Lin, X., Cai, K., Jiang, Y., Ni, T., Chen, Y., Feng, J., Dang, S., Zhou, C.Z., Zeng, Q.

(2022) Environ Microbiol 24: 3037-3050

• DOI: https://doi.org/10.1111/1462-2920.16043

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 68.89 kDa 
• Atom Count: 4,829 
• Modeled Residue Count: 598 
• Deposited Residue Count: 652 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phosphate transporter subunit	A, B	326	Synechococcus phage Syn19	Mutation(s): 0  Gene Names: pstS, Syn19_159
UniProt
Find proteins for E3SQC4 (Synechococcus phage Syn19) Explore E3SQC4  Go to UniProtKB:  E3SQC4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4 (Subject of Investigation/LOI)	C [auth A], G [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
GOL	D [auth A], E [auth A], F [auth A], H [auth B], I [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free:  0.183 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.164 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.165 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 115.278	α = 90
b = 76.78	β = 122.09
c = 97.644	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-02-08 
Deposition Author(s): Cai, K., Jiang, Y.L.

---

Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-02-08
  Type: Initial release
  
• Version 1.1: 2023-11-29
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-06
  Changes: Structure summary