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1.A.69.5.1
Odorant receptor 85b (or85b) of 302 aas and 5 putative TMSs.  Binds the odorant, heptanone, for activation; 2-nananone is a competitive antagonist.  The second half of TMS3 is involved in odorant binding and activation (Nichols and Luetje 2010).

Accession Number:D7F949
Protein Name:Odorant receptor 85b
Length:302
Molecular Weight:35457.00
Species:Drosophila melanogaster (Fruit fly) [7227]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate cations

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	SNVINLSFVG LFESIYVYSA FMDNKFLEAV TALSYIGFVT VGMSKMFFIR WKKTAITELI 
61:	NELKEIYPNG LIREERYNLP MYLGTCSRIS LIYSLLYSVL IWTFNLFCVM EYWVYDKWLN 
121:	IRVVGKQLPY LMYIPWKWQD NWSYYPLLFS QNFAGYTSAA GQISTDVLLC AVATQLVMHF 
181:	DFLSNSMERH ELSGDWKKDS RFLVDIVRYH ERILRLSDAV NDIFGIPLLL NFMVSSFVIC 
241:	FVGVATYNQK WYKADVRYKR ALVIIIARSQ KVTFLKATIF LDITRSTMTD LLQISYKFFA 
301:	LL