9GOQ | pdb_00009goq

Structure of the S.aureus MecA protein, in complex with ClpC

• PDB DOI: https://doi.org/10.2210/pdb9GOQ/pdb
• EM Map EMD-51498: EMDB EMDataResource

• Classification: CHAPERONE
• Organism(s): Staphylococcus, Staphylococcus aureus
• Expression System: Escherichia coli B, Escherichia coli
• Mutation(s): No 


• Deposited: 2024-09-06 Released: 2025-08-20 
• Deposition Author(s): Carroni, M., Azinas, S.
• Funding Organization(s): Knut and Alice Wallenberg Foundation, The Swedish Foundation for Strategic Research

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

ClpC and ClpP act as reciprocal allosteric activators to form a highly efficient AAA+ protease

Azinas, S., Wallden, K., Katikaridis, P., Schahl, A., Mogk, A., Carroni, M.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C6  (Explore in 3D)
Global Stoichiometry: Hetero 18-mer - A6B6C6 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 1,264.17 kDa 
• Atom Count: 13,878 
• Modeled Residue Count: 1,704 
• Deposited Residue Count: 11,250 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Adapter protein MecA	A, C [auth B], D [auth C], E [auth D], F [auth E], G [auth F]	239	Staphylococcus	Mutation(s): 0  Gene Names:  mecA, EP54_04625, EQ90_04635, FAF17_07790, GO814_05005, GO942_02320, GQX37_01765, HMPREF3211_01912, NCTC10702_01523, NCTC13131_00648, SAMEA2078260_00478, SAMEA2078588_00142, SAMEA2080344_00168, SAMEA2081063_00168, SAMEA4008575_00168, SAMEA70146418_02921
UniProt
Find proteins for Q2G1U5 (Staphylococcus aureus (strain NCTC 8325 / PS 47)) Explore Q2G1U5  Go to UniProtKB:  Q2G1U5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-dependent Clp protease ATP-binding subunit ClpC	B [auth a], H [auth b], I [auth c], J [auth d], K [auth e], L [auth f], M [auth g], N [auth h], O [auth i], P [auth l], Q [auth m], R [auth n]	818	Staphylococcus aureus	Mutation(s): 0  Gene Names: clpC, BER48_000499, CEJ93_12415, ERS072738_00457, ERS072840_00763, ERS073583_01020, ERS074020_00452, HMPREF3211_01370
UniProt
Find proteins for Q2G0P5 (Staphylococcus aureus (strain NCTC 8325 / PS 47)) Explore Q2G0P5  Go to UniProtKB:  Q2G0P5

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21_5207
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-20 
Deposition Author(s): Carroni, M., Azinas, S.

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Funding Organization	Location	Grant Number
Knut and Alice Wallenberg Foundation	Sweden	KAW 2021.0347
The Swedish Foundation for Strategic Research	Sweden	RIF21-0047

Revision History  

• Version 1.0: 2025-08-20
  Type: Initial release