9SR2 | pdb_00009sr2

Catalytically active GH161A phosphorylase refined in C1

• PDB DOI: https://doi.org/10.2210/pdb9SR2/pdb
• EM Map EMD-55127: EMDB EMDataResource

• Classification: HYDROLASE
• Organism(s): gut metagenome
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-09-23 Released: 2025-12-10 
• Deposition Author(s): Cooper, N., Cioci, G., Ladeveze, S., Potocki-Veronese, G., Moulis, C.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.65 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Structural and Functional Dissection of GH161 beta-Glucan Phosphorylases: Molecular Specificities and Dynamics of Catalysis of Dimeric GH-Q Enzymes

Cooper, N.J., Ladeveze, S., Li, A., Shayan, R., Faure, R., Ropartz, D., Terrapon, N., Lombard, V., Henrissat, B., Remaud-Simeon, M., Potocki-Veronese, G., Moulis, C., Cioci, G.

(2025) ACS Catal 15: 19312-19327

• DOI: https://doi.org/10.1021/acscatal.5c05191

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 240.97 kDa 
• Atom Count: 16,765 
• Modeled Residue Count: 2,076 
• Deposited Residue Count: 2,092 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GH161A	A, B	1,046	gut metagenome	Mutation(s): 0

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-3)-beta-D-glucopyranose	C, D	2		N/A

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BGC (Subject of Investigation/LOI)	F [auth A], H [auth B]	beta-D-glucopyranose C6 H12 O6 WQZGKKKJIJFFOK-VFUOTHLCSA-N
PO4 (Subject of Investigation/LOI)	E [auth A], G [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900024	C, D	beta-laminaribiose	Oligosaccharide / Antimicrobial

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.65 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-10 
Deposition Author(s): Cooper, N., Cioci, G., Ladeveze, S., Potocki-Veronese, G., Moulis, C.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-12-10
  Type: Initial release