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: | A9YWR6 |
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| Protein Name: | ABC transporter |
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| Length: | 727 |
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| Molecular Weight: | 81603.00 |
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| Species: | Medicago truncatula (Barrel medic) [3880] |
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| Number of TMSs: | 6 |
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| Substrate |
lipid |
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1: MKTQGLELET VIDIKHKPVS FTGGLEFESL TYTVTKKKKV DGKWSNEDVD LLHDITGYAP
61: KGCITAVMGP SGAGKSTLLD GLAGRIASGS LKGKVSLDGN SVNASLIKRT SAYIMQEDRL
121: FPMLTVYETL MFAADFRLGP LSAVDKRQRV EKLIEQLGLS SSRNTYIGDE GTRGVSGGER
181: RRVSIGVDII HGPSLLFLDE PTSGLDSTSA LSVIEKLHDI ARNGSTVILT IHQPSSRIQL
241: LLDHLIILAR GQLMFQGSLK DVGHHLNRMG RKIPKGENPI ENLIDVIQEY DQCDFVGVEV
301: LAEFARTGMK PPLLSDMEEI ISYTNSIAPS PSPLHRGSKY EEKSQDFSYS SQISRRSLND
361: EFDHSIRSPY NNTPMSWSAS NSAAFLKFTP SRLKNENKVQ KPPSHASPGI YTYSSEILPA
421: TPTPHSSDYV VDENDYLTPT NSSQEHLGPK FANSYIGETW ILMRRNFTNI RRTPELFLSR
481: LMVLTFMGVM MATMFHNPKN TLQGITNRLS FFIFTVCLFF FSSNDAVPAF IQERFIFIRE
541: TSHNAYRASC YTIASLITHM PFLALQALAY AAIVWFALEL RGPFIYFFLV LFISLLSTNS
601: FVVFVSSIVP NYILGYAAVI AFTALFFLFC GYFLSSEDIP LYWRWMNKVS TMTYPYEGLL
661: MNEYQTNETF GSNDGVSITG FDILKSLHIG TEEIKKRNNV LIMLGWAVLY RILFYIILRF
721: ASKNQRS