Proteins
Curated comments from UniProt
Type | Comment | Proteins |
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U89C1_ARATH | function | Flavonol 7-O-rhamnosyltransferase that catalyzes the transfer of rhamnose from UDP-rhamnose to the 7-OH position of 3-O-glycosylated flavonols, such as kaempferol 3-O-rhamnoside, kaempferol 3-O-glucoside, quercetin 3-O-glucoside, quercetin 3-O-galactoside, quercetin 3-O-rhamnoside and isorhamnetin 3-O-glucoside (PubMed:17314094, PubMed:23549747, PubMed:24251900, PubMed:30893500). Is able to glycosylate the flavonols quercetin and kaempferol to yield quercetin 7-O-rhamnoside and kaempferol 7-O-rhamnoside (PubMed:17314094, PubMed:26513760, PubMed:30893500). Shows a strict specificity for UDP-rhamnose as sugar donor (PubMed:17314094, PubMed:30893500). Does not act on 3-O-glycosylated anthocyanins (PubMed:17314094). The accumulation of kaempferol 3-O-rhamnoside-7-O-rhamnoside inhibits basipetal auxin transport, which influences auxin distribution and plant organ development (PubMed:24251900, PubMed:26742840). |
U89C1_ARATH | pathway | Flavonoid metabolism. |
U89C1_ARATH | similarity | Belongs to the UDP-glycosyltransferase family. |
U89C1_ARATH | tissue specificity | Highly expressed in floral buds (PubMed:17314094). Expressed in stems, leaves and flowers (PubMed:17314094). Expressed at low levels in roots and siliques (PubMed:17314094). Expressed on the adaxial side of cotyledons and emerging leaves, in trichomes, root columella cells, and the late elongation/early differentiation zone of roots (PubMed:26742840). |
Function
Gene Ontology
cellular component | |
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cytosol
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ECO |
extracellular region
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ECO |
molecular function | |
UDP-glycosyltransferase activity
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ECO |
biological process | |
flavonol biosynthetic process
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ECO |
Interactions
Interaction Network
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