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).
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| Accession Number: | D3GE74 |
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| Protein Name: | STR |
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| Length: | 817 |
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| Molecular Weight: | 91885.00 |
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| Species: | Medicago truncatula (Barrel medic) [3880] |
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| Number of TMSs: | 5 |
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| Substrate |
lipid |
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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