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3.D.4.9.1
Quinol oxidase (proton gradient generated only by chemical charge separation) (Purschke et al., 1997) [DoxA + DoxD comprise a novel membrane-bound thiosulfate: quinone oxidoreductase, Dox (Müller et al., 2004)]

Accession Number:P97207
Protein Name:DoxD aka Terminal oxidase subunit
Length:184
Molecular Weight:20410.00
Species:Acidianus ambivalens (Desulfurolobus ambivalens) [2283]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate hydron

Cross database links:

Pfam: PF04173   
BioCyc: MetaCyc:MONOMER-12419   

References (1)

[1] “The terminal quinol oxidase of the hyperthermophilic archaeon Acidianus ambivalens exhibits a novel subunit structure and gene organization.”  Purschke W.G.et.al.   9023221

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MSGKQSEEFK RTEKMTRMEY LFPVRFAVGW MFLDGGLRKA VLKPAKLDPN SASFVGGKLV 
61:	NFLPHAGPFK GLLLMTLENR SLDVTFLTVF SYIEIIAGLF IIIGLLTRLA ALGALAMSVG 
121:	FAPAYWLGST CEDEWQIGAL LTAGSVTLML TAAGRVWGLD YFLYKKLGDR PIANVPILKW 
181:	IKLW