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1.A.77.3.1
AtpI of 133 aas,  This protein is a part of a two component channel and as such is also listed with TC# 1.A.77.2.8.

Accession Number:P22475
Protein Name:ATP synthase protein I
Length:133
Molecular Weight:15214.00
Species:Bacillus pseudofirmus (strain OF4) [398511]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate cation

Cross database links:

Entrez Gene ID: 8766360   
Pfam: PF03899   
KEGG: bpf:BpOF4_06885    bpf:BpOF4_06885    bpf:BpOF4_06885   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0045263 C:proton-transporting ATP synthase complex, coupling factor F(o)
GO:0015078 F:hydrogen ion transmembrane transporter activity
GO:0015986 P:ATP synthesis coupled proton transport
GO:0015992 P:proton transport

References (3)

[1] “Organization and nucleotide sequence of the atp genes encoding the ATP synthase from alkaliphilic Bacillus firmus OF4.”  Ivey D.M.et.al.   1833620
[2] “Organization and nucleotide sequence of the atp genes encoding the ATP synthase from alkaliphilic Bacillus firmus OF4.”  Ivey D.M.et.al.   1833620
[3] “Organization and nucleotide sequence of the atp genes encoding the ATP synthase from alkaliphilic Bacillus firmus OF4.”  Ivey D.M.et.al.   1833620

External Searches:

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MSKMSSLQGK MRQHTIIVMT LLFLFITGYL LTQLKVQFLS FFAGLSVSFL NLWTTYYLAK 
61:	VVGKVADQKR KHSVLPFILA GFGYLIRIVL ALSVVYWALI NPDTLNVLLV IAGISLIYAI 
121:	IMLDMLFQFM RKR