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9.A.10.1.1
The SpoIISA oligomeric toxin with 3 N-terminal TMSs and a C-terminal hydrophilic domain.  The oligomeric structure probably forms a pore in the membrane.  The anti-toxin, SpoIISB (56 aas; O34800) forms an A2B2 heterotetramer (Makroczyova J et al, 2014; PMID 25039482).

Accession Number:O34853
Protein Name:Stage II sporulation protein SA
Length:248
Molecular Weight:29061.00
Species:Bacillus subtilis (strain 168) [224308]
Number of TMSs:2
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate

Cross database links:

Structure:
3O6Q     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MVLFFQIMVW CIVAGLGLYV YATWRFEAKV KEKMSAIRKT WYLLFVLGAM VYWTYEPTSL 
61:	FTHWERYLIV AVSFALIDAF IFLSAYVKKL AGSELETDTR EILEENNEML HMYLNRLKTY 
121:	QYLLKNEPIH VYYGSIDAYA EGIDKLLKTY ADKMNLTASL CHYSTQADKD RLTEHMDDPA 
181:	DVQTRLDRKD VYYDQYGKVV LIPFTIETQN YVIKLTSDSI VTEFDYLLFT SLTSIYDLVL 
241:	PIEEEGEG