2.A.67.1.7 Oligopeptide transporter 3, Opt3, of 737 aas and 15 - 17 TMSs (Koh et al. 2002). It may be involved in the translocation of tetra- and
pentapeptides across the cellular membrane, but it also acts as a metal transporter as a component capable of transporting Fe2+ and/or Cu2+ (Wintz et al. 2003). It is essential for early embryo development in Arabidopsis (Stacey et al. 2002). OPT3 proteins are involved in ROS regulation, plant stress responses, and basal pathogen resistance. The transport of iron through OPT3s may occur with glutathione (GSH) (Kurt 2021).
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Accession Number: | O23482 |
Protein Name: | Oligopeptide transporter 3 |
Length: | 737 |
Molecular Weight: | 82441.00 |
Species: | Arabidopsis thaliana (Mouse-ear cress) [3702] |
Number of TMSs: | 15 |
Location1 / Topology2 / Orientation3: |
Membrane1 / Multi-pass membrane protein2 |
Substrate |
iron(2+) |
---|
1: MDAEKATDKT NVHLSSDHER CPVEEVALVV PETDDPSLPV MTFRAWFLGL TSCVLLIFLN
61: TFFTYRTQPL TISAILMQIA VLPIGKFMAR TLPTTSHNLL GWSFSLNPGP FNIKEHVIIT
121: IFANCGVAYG GGDAYSIGAI TVMKAYYKQS LSFICGLFIV LTTQILGYGW AGILRRYLVD
181: PVDMWWPSNL AQVSLFRALH EKENKSKGLT RMKFFLVALG ASFIYYALPG YLFPILTFFS
241: WVCWAWPNSI TAQQVGSGYH GLGVGAFTLD WAGISAYHGS PLVAPWSSIL NVGVGFIMFI
301: YIIVPVCYWK FNTFDARKFP IFSNQLFTTS GQKYDTTKIL TPQFDLDIGA YNNYGKLYLS
361: PLFALSIGSG FARFTATLTH VALFNGRDIW KQTWSAVNTT KLDIHGKLMQ SYKKVPEWWF
421: YILLAGSVAM SLLMSFVWKE SVQLPWWGML FAFALAFIVT LPIGVIQATT NQQPGYDIIG
481: QFIIGYILPG KPIANLIFKI YGRISTVHAL SFLADLKLGH YMKIPPRCMY TAQLVGTVVA
541: GVVNLGVAWW MLESIQDICD IEGDHPNSPW TCPKYRVTFD ASVIWGLIGP RRLFGPGGMY
601: RNLVWLFLIG AVLPVPVWAL SKIFPNKKWI PLINIPVISY GFAGMPPATP TNIASWLVTG
661: TIFNYFVFNY HKRWWQKYNY VLSAALDAGT AFMGVLLFFA LQNAGHDLKW WGTEVDHCPL
721: ASCPTAPGIK AKGCPVF