Enzyme

In addition to the desaturation of (2R,3R)-dihydroflavonols to flavonols, the enzyme from Citrus unshiu (satsuma mandarin) also has a non-specific activity that trans-hydroxylates the flavanones (2S)-naringenin and the unnatural (2R)-naringenin at C-3 to kaempferol and (2R,3R)-dihydrokaempferol, respectively [2]. Requires Fe2+.

FLS

Enzyme

Flavonol synthase

Enzyme name

EC:1.14.20.6

Entry

Oxidoreductases;Acting on paired donors, with incorporation or reduction of molecular oxygen;With 2-oxoglutarate as one donor, and the other dehydrogenated

Class

dihydroflavonol,2-oxoglutarate:oxygen oxidoreductase

Sysname

a dihydroflavonol + 2-oxoglutarate + O2 = a flavonol + succinate + CO2 + H2O [RN:R07368]

Reaction

flavonol [CPD:C01495];succinate [CPD:C00042];CO2 [CPD:C00011];H2O [CPD:C00001]

Product

Species information

Scutellaria baicalensis

Species name

Baikal skullcap (Scutellaria baicalensis) is a species of eudicot in the family Lamiaceae (mint family).

Species info

Gene sequence info

Scutellaria_baicalensis.FLS.fa

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>Sb05t11050.mRNA1
MEKAQGVAALSCNEEDGVPPEFIRPENEQPRFTTFRGEAPEVPVVDFGEAETEKLVESVRVASSTWGLFQIVNHGIPSRVIEDLQRVGKQFFELSEDEKKHYLKNPHSKSIQGYGSKLRNGWVDHLFNIVWPSSAIDYRFWPTNPPDYREATEEYAKHLHEVEEKLFSCLSLGLGLAAEDLRAAVGGAELVYNLKINYYPPCPRPDLVLGVPPHTDLCAVTILVPNQLQGLQVFKDDHWYNVSYIPNALIIHIGDQIEILSNGKYKAVRHRSVVNKEGTRMSWPVFMEPPPHLEIGPHPKLVNEENPPKYKTKTFSDYAYCKMNKIPR
>Sb05t11000.mRNA1
MEVGRVQDIASASKHAGSIPSEFIRSEEEQPAKSTVHGVVLEVPVIDVGGGSDEEEMARLMSEASREWGIFQVVNHGIPDQLIAKLQLVGKEFFELPNEEKELVAKTPHSGIQGYGTTLQKEIHGKKVELSLDRKTCIGYS
>Sb05t15090.mRNA1
MEVGRVQDIASASKHAGSIPSEFIRSEEEQPAKSTVHGVVLEVPVIDVGGGSDEEEMARLMSEASREWGIFQVVNHGIPDQVIAKLQLVGKEFFEELPNEEKELVAKTPHSGIQGYGTTLQKEIHGKKGWVDHLFHNIWPPSAINYKFWPNNPPSYREINEEYTKRLREVSDKLMKWLSLGLGLEEHELEEAMGGEETIYLMKINYYPPCPRPDLALGVVPHTDMAGLTILVPNEVQGLQVERDGHWTTVNKECTRMSWPVFLEPPPELEVGPILKLLNEETPPHYKTKKYNDYVYCKLNKLPQ
>Sb05t11030.mRNA1
MEVGRVQDIASASKHAGSIPSEFIRSEEEQPAKSTVHGVVLEVPVIDVGGGSDEEEMARLMSEASREWGIFQVVNHGIPDQVIAKLQLVGKEFFEELPNEEKELVAKTPHSGIQGYGTTLQKEIHGKKGWVDHLFHNIWPPSAINYNFWPNNPPSYREINEEYTKRLREVSDKLMKWLSLGLGLEEHELKEAMGGEETIYLMKINYYPPCPRPDLALGVVPHTDMAGLTILVPNEVQGLQVQRDGDWYDIKYIPNALIIHIGDQIEILSNGQYKTVFHRTTVNKECTRMSWPVFLEPPPELEVGPIPKLLNEETPPHYKTKKYKDYVYCKLNKLPQ
>Sb05t15130.mRNA1
MEVGRVQDIASASKHAGSIPSEFIRSEEEQPAKSTVHGVVLEVPVIDVGGGSDEEEMARLMSEASREWGIFQVVNHGIPDQLIAKLQLVGKEFFELPNEEKELVAKTPHSGMQGYGTTLQKEIHGKKGWVDHLFHNIWPPSAINYNFWPNNPPSYREINEDYTKRLREVSDKLMKWLSLGLGLEEHELEEAMGGEETIYLMKINYYPPCPRPDLALGVVPHTDMAGLTILVPNEVQGLQVQRDGDWYDIKYIPNALIIHIGDQIEVRLSP
>Sb0t04190.mRNA1
MEVGRVQDIASASKHAGSIPSEFIRSEEEQPAKSTVHGVVLEVPVIDVGGGSDEEEMARLMSEASREWGIFQVVNHGIPDQLIAKLQLVGKEFFELPNEEKELVAKTPHSGMQGYGTTLQKEIHGKKGWVDHLFHNIWPPSAINYNFWPNNPPSYREINEDYTKRLREVSDKLMKWLSLGLGLEEHELEEAMGGEETIYLMKINYYPPCPRPDLALGVVPHTDMAGLTILVPNEVQGLQVQRDGDWYDIKYIPNALIIHIGDQIEILSNGQYKAVFHRTTVNKECTRMSWPVFLEPPPELEVGPIPKLLNEETPPHYKTKKYKDYVYCKLNKLPQ

Gene tree

Gene tree

Sheng jun & Dong yang Teams, Yunnan agriculture University