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3.A.1.204.22
Root heterodimeric half ABCG subfamily lipid  exporter, STR (817 aas)/STR2 (727 aas). Each protein has an ATPase domain followed by a 6 TMS membrane domain.  Exports lipids made from RAM2 (glycerol-3-phosphate acyltransferase)-catalyzed monoacylglycerols, allowing accumulation of extracellular lipids, possibly 2-monopalmitin (Luginbuehl et al. 2017).  Found in the peri-arbuscular membrane and required for colonization by mutualistic mycorrhizal and parasitic fungi (Jiang et al. 2017). Arbuscular mycorrhizal (AM) fungi facilitate plant uptake of mineral nutrients and obtain organic nutrients such as sugars and fatty acids, from the plant, and this ABCG transporter is required to form the symbiosis. Co-overexpressing STR and STR2 led to higher accumulation of extracelular unstaurated lipid polyesters such as cutin monomers (Jiang et al. 2017).

Accession Number:D3GE74
Protein Name:STR
Length:817
Molecular Weight:91885.00
Species:Medicago truncatula (Barrel medic) [3880]
Number of TMSs:5
Substrate unsaturated lipid polyesters, 2-monopalmtin, lipids

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MARLERDGTN KSLESLMDSH KPGGTTTNLN QLRTQKSIPG YGLEFTNLSY SIIKKQKKDG 
61:	VWINKETYLL HDISGQAIKG EIMAIMGPSG AGKSTFLDAL AGRIAKGSLQ GSVRIDGKPV 
121:	TTSYMKMVSS YVMQDDQLFP MLTVFETFMF AAEVRLPPSI SRDEKKKRVH ELLNKLGLQS 
181:	ATHTYIGDEG RRGVSGGERR RVSIGIEIIH KPSLLFLDEP TSGLDSTSAY SVVEKIKDIA 
241:	QGGSIVLMTI HQPSFRIQML LDKITILARG RLIYMGRPDA LHTHLSGFGR PVPDGENNIE 
301:	YLLDVITEYD QATVGLDPLV QYQHDGHKPD PAAMTPVPKP PRTPYRRNTP ASKHMISLRS 
361:	QGFTAGTPQP DSSQFGLDDD DNDDDENFDN SLERRSVQTS RNIVTSGVYP RLASQFYQDF 
421:	SAKDFSVWLY NGVVGTPRRP PSWTPARTPG WTPGKTPLSG PRSFVSNQHS ASYQDPYYIQ 
481:	KTNTVVGQSM DYSATSYAPS YEEFEIEEVL DEPDLGPKYA NPWLREVAVL SWRTVLNVIR 
541:	TPELFASREI VLTVMALVLS TIFKNLGDTT FIDINRLLNF YIFAVCLVFF SSNDAVPSFI 
601:	MERFIFIRET SHNAYRASSY VISSLIVYLP FFAVQGLTFA VITKLMLHLK SNLFNFWMIL 
661:	FASLITTNAY VMLVSALVPS YITGYAVVIA TTALFFLTCG FFLKRTQIPA YWKWLHYISA 
721:	IKYPFEGLLI NEFKNNRGCY SGNKADLSPG PLGDVKPSKH HNASLPLNCL LGEDVLSTMD 
781:	ITMESLWYDI LILLAWGVLY RFFFYLVLRF YSKNERK