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9.A.78.1.2
Protein retinal degeneration B, RdgB, of 1259 aas, possibly with a central 8 TMSs unit in a 4 + 4  TMS arrangement. It catalyzes the transfer of phosphatidylinositol (PI) and phosphatidic acid (PA) between membranes (Garner et al. 2012).  It may control the phosphatidylinositol concentration in transport vesicles from the subrhabdomeric cisternae (SRC) to the rhabdomere as well as functioning as a calcium transporter (Vihtelic et al. 1991).

Accession Number:P43125
Protein Name:Protein retinal degeneration B
Length:1259
Molecular Weight:138895.00
Species:Drosophila melanogaster (Fruit fly) [7227]
Number of TMSs:2
Substrate

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MLIKEYRIPL PLTVEEYRIA QLYMIAKKSR EESHGEGSGV EIIINEPYKD GPGGNGQYTK 
61:	KIYHVGNHLP GWIKSLLPKS ALTVEEEAWN AYPYTRTRYT CPFVEKFSLD IETYYYPDNG 
121:	YQDNVFQLSG SDLRNRIVDV IDIVKDQLWG GDYVKEEDPK HFVSDKTGRG PLAEDWLEEY 
181:	WREVKGKKQP TPRNMSLMTA YKICRVEFRY WGMQTKLEKF IHDVALRKMM LRAHRQAWAW 
241:	QDEWFGLTIE DIRELERQTQ LALAKKMGGG EECSDDSVSE PYVSTAATAA STTGSERKKS 
301:	APAVPPIVTQ QPPSAEASSD EEGEEEEDDD EDENDAIGTG VDLSANQGGS AQRSRSQSIQ 
361:	MAQKGKFGSK GALHSPVGSA HSFDLQVANW RMERLEVDSK SNSDEEFFDC LDTNETNSLA 
421:	KWSSLELLGE GDDSPPPHGG PSSAASVGGR GNSRQEDSIF NQDFLMRVAS ERGNKRQLRS 
481:	SASVDRSHDS SPPGSPSTPS CPTTILILVV HAGSVLDAAS ELTAKKSDVT TFRGSFEAVM 
541:	RQHYPSLLTH VTIKMVPCPS ICTDALGILS SLSPYSFDAS PSAADIPNIA DVPIGAIPLL 
601:	SVASPEFHET VNKTVAAANI VYHEFLKSEE GHGFSGQIVM LGDSMGSLLA YEALCRSNGS 
661:	QPGTASGASN SGGDAATNIN THNPLSPRNS RLDDDERFIE ADLDAKRLLV APSPRRRRSS 
721:	SSSDSRATKL DFEVCDFFMF GSPLSVVLAA RKLHDAKAAL PRPNCHQVYN LFHPTDPIAS 
781:	RLEPLLSARF SILAPVNVPR YAKYPLGNGQ PLHLLEVIQS HPQHFNDGNN LLAGRRLSDA 
841:	SMQSTISGLI ENVSLSTIHA LQNKWWGTKR LDYALYCPEG LSNFPAHALP HLFHASYWES 
901:	PDVIAFILRQ IGKFEGIPFV GSNDDKDNAS FHPGQPREKW IKKRTSVKLK NVAANHRAND 
961:	VIVQEGREQR LNARFMYGPL DMITLHGEKV DVHIMKDPPA GEWTFLSTEV TDKNGRISYS 
1021:	IPDQVSLGYG IYPVKMVVRG DHTSVDCYMA VVPPLTECVV FSIDGSFTAS MSVTGRDPKV 
1081:	RAGAVDVCRH WQELGYLLIY ITGRPDMQQQ RVVSWLSQHN FPHGLISFAD GLSTDPLGHK 
1141:	TAYLNNLVQN HGISITAAYG SSKDISVYTN VGMRTDQIFI VGKVGKKLQS NATVLSDGYA 
1201:	AHLAGLQAVG GSRPAKGNAR MVIPRGCFNL PGQTANPRRR RYLERKTVSS CCLMVFQTT