8VJM

SpoIVFB(E44Q variant):pro-sigmaK complex

• PDB DOI: https://doi.org/10.2210/pdb8VJM/pdb
• EM Map EMD-43289: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Bacillus subtilis subsp. subtilis str. 168
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTM


• Deposited: 2024-01-07 Released: 2024-10-02 
• Deposition Author(s): Orlando, M.A., Pouillon, H.J.T., Mandal, S., Kroos, L., Orlando, B.J.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Substrate Engagement by the Intramembrane Metalloprotease SpoIVFB

Orlando, M.A., Pouillon, H.J.T., Mandal, S., Kroos, L., Orlando, B.J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A2B2 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 106.86 kDa 
• Atom Count: 6,667 
• Modelled Residue Count: 808 
• Deposited Residue Count: 898 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Stage IV sporulation protein FB	A, C	314	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 1  Gene Names: spoIVFB, bofB, BSU27970 EC: 3.4.24 Membrane Entity: Yes
UniProt
Find proteins for P26937 (Bacillus subtilis (strain 168)) Explore P26937  Go to UniProtKB:  P26937

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
RNA polymerase sigma-K factor	B, D	135	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: sigK, cisB, spoIIIC, spoIVCB, BSU25760/BSU26390
UniProt
Find proteins for P12254 (Bacillus subtilis (strain 168)) Explore P12254  Go to UniProtKB:  P12254

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LMN	E [auth A], G [auth A]	Lauryl Maltose Neopentyl Glycol C47 H88 O22 MADJBYLAYPCCOO-XYPZXBMFSA-N
PEF	F [auth A]	DI-PALMITOYL-3-SN-PHOSPHATIDYLETHANOLAMINE C37 H74 N O8 P SLKDGVPOSSLUAI-PGUFJCEWSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-10-02 
Deposition Author(s): Orlando, M.A., Pouillon, H.J.T., Mandal, S., Kroos, L., Orlando, B.J.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R35GM146721
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01GM043585

Revision History  

• Version 1.0: 2024-10-02
  Type: Initial release