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2.A.71.1.6
Folate/biopterin/methotrexate transporter, BT1, of 1057 aas and 14 TMSs in the N-terminal half of the protein (residues 1 - 500) with an equally long C-terminal hydrophilic domain.  Uptake of folate across the parasite plasma membrane is rapid, biphasic, temperature dependent, bi-directional, concentration dependent and specific (Massimine et al. 2005).  

Accession Number:V5B8W0
Protein Name:Folate/biopterin transporter subfamily protein
Length:1057
Molecular Weight:115066.00
Species:Toxoplasma gondii (strain ATCC 50861 / VEG) [432359]
Number of TMSs:14
Substrate folic acid, methotrexate, biopterin

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MARMKAVLCA RQWCRRLSPL RLVDFVHSVR RDVGLEFTLM LLSTYVGVKG FLYILATDSL 
61:	LPFMKDLGYD GLVYQRTVTL AYVPWGMKGL IGLLSDALPV GGYHKRFYML AASLSGVASL 
121:	VCLLCLARET ARHAAWLIGL LFFCVHVQIA TVDLMCEGMY SQVMVAKPRV GANLVTFVNA 
181:	CTTVGAFVGR IIVGPVSDRF GARPLFLVAL PVALQSLLPI ALNYLMEERV RPGCTLLTEK 
241:	LRDHKKVFLM AFAVAAGASG VAVLTLVGGR GTTYILPYCG VVSVLLIVLC AVCLPPQLAK 
301:	CNVFFFLDRI LHVSISGALD FFYTASPACV PDGPHFDYTY YSTYTAVAGT LATWLGLVLF 
361:	QLALSSWTYR SIFWLTSAVR ILASLFDYVM TTRLNLRLGI PDKFMYLFGD AIILSVIGTL 
421:	SHMPGVILTS RLCPPRIEST VYAILAGISN FGHSVSTLLG IRAIKAANIT TTATDGHACN 
481:	FENLPALVLI AHCVLPMASI PLALFLLPST PMDESLEHFD SDCMRRESEA GAEAGVSSDE 
541:	ATRDVHRRTV ERRTRGGKVA ETELALMETR GENRTRAREN RTFGACVHHA LSTTDDEDSG 
601:	GYRDEDEFDA TRKPRIFGRE RIYTDGDVDL GNATTFQVLP VLGDDHEGGD LTDAMGVPVF 
661:	FPFSRRGQRG GVAASWKKDG EESGGHEESR EKQPQARNAR VRRGATGQRP RTSYSLCASD 
721:	QLSPTASPRG CFSGQDSELT FAVSSEEDAS EGPNADSVRR ASADEQGVCV VGHHAVAAEH 
781:	MRRPFSPFSS SSLSFEEEEE RAGRRSGRSA VYEEEDRSED GERRSTFASD SGRVDGEAGE 
841:	FGDDEVLFAS EDAETTAALP VEHAEENMGK WRRNTEENVS SDSRSTATPP YTKARLPPPS 
901:	SNLPDRDSPS FLLESETPSA PVSYISTPLS VQSASVSASV SCSSSVRHSP FPSSFTSSSP 
961:	TDLGWGAAAH HGRREGKSPS GPPLAQAARR ADADPSSLGM HAVFSDTFGP RRTFVEETRP 
1021:	QLDLDAEEGS QRSTLGDETA STEDKDLYLF HQTEEER