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2.A.31.3.5
Borate exporter of 666 aas and 13 TMSs with 5 cytooplasmic α-helices, Bot1.  Also known as the barley root anion-permeable transporter.  Confers tolerance to boron. It is believed to be trimeric.  Transport is dependent on Na+ (Nagarajan et al. 2016).

Accession Number:M0ULF4
Protein Name:Boron transporter
Length:666
Molecular Weight:74518.00
Species:Hordeum vulgare var. distichum (Domesticated barley) [112509]
Number of TMSs:10
Substrate Borate

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MDLLRNPFKG VVADVKGRAP WYKDDWLAGL RAGFGILAPT MYIFFASALP VIAFGEQLSN 
61:	ETNGILSTVE TLASTAICGI IHAILGGQPM MIVGVAEPTI IMYTYLYSFA KKQPGLGERL 
121:	YLAWAGWVCI WTAIMLFLLA MFNASNVISR FTRVAGELFG MLITVLFLQE AIKGIVGEFS 
181:	MPKDAEIFDR SSPIYQFQWI YVNGLLGVIF SIGLLYSALK TRRARSWLYG IGWLRSFIAD 
241:	YGVPLMVIVW TAFSYALPSG VPSGVPRRLF SPLPWESSSL GHWTVAKDLF SVPPAYIFAA 
301:	IVPALMVAGL YFFDHSVASQ LAQQQEFNLK KPSAYHYDIL VLGFMVLLCG LIGIPPANGV 
361:	LPQSPMHTRS LAVLKGQLMR KRMLRTAKEG MSNRASSLEI YGKMHEVFIE MDNKQDADSV 
421:	DKDLKSLKDA VLREGDEDGK LAGEFDPRKH IEAHLPVRVN EQRLSNLLQS LLVGGCVGAM 
481:	PVIKMIPTSV LWGYFAYMAI DSLPGNQFWE RIQLLFVGAS RRYKVLEGPH ASFVESVSSR 
541:	TIYVFTIFQI VYFLICFGTT WIPIAGILFP LPFFLMILIR QYLLPKFFEP NDLRELDAAE 
601:	YDELEGVQHE HTLEEDGSIS GSCDGRIDAE ILDELTTHRG ELKHRVVSHR EERHLQVHSN 
661:	AVQPSV