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
Selenicereus undatus
Species name
Dragon fruit (Selenicereus undatus) is a species of eudicot in the family Cactaceae (cactus family).
Species info

Gene sequence info
Selenicereus_undatus.FLS.fa
Download
>HU01G00644.1
MAKACTKEDMSAEKLLVKRVQDMVLQGEEDQLPSPYICRNKDKYEDDHDDDVHLSPIPIIDLNEAYVDHPEQLQSLKLALCSWGCFQAIGHGISSSILNNVRKVVKEFFEQPMEEKNKYAKKVEEFEGYGGDPPPEEGQPLDWQDRLCLEVYPQHRRNLHFWPQNPPSFREVLEEYMGKIRLMTETVSKAMARCLDSEEECFMNQFGEGAPIQARLNYYSPSRRPDLVMGLKRHADNSGYTLILQDEVQGLQIL
>HU05G00404.1
MREREMGEVGLNLPIIDLSLPDRCFIAESVRQACIDYGFFYIVNHELDKECLSRLFDESKRFFSLPFEEKMKLSKKEVRGYAPLYSDKLDPSSSQTKADSRESFCIGRLDDEACNLNHWPSEELLPNWRLTIESYYRKVMKAGKSLLSLIALALNLDEKYFETVGVLDKPMTFLRIIRYPGDFSDCSEEILGASAHSDYGIITLLATDGVPGLQVCRDKDQQPRVWEDVLHVEGALIINIGDMTERWTNCLFRSAPHRVVSTGQERYSAAFFFDPPEDFLVECLDSCCSESNAPSYETHPNLSPLPQDAKALGKCKEKCDMSKDVTHATEEACEIGKAASLKIIGDENEVLQLIKEIIKGVEER
>HU07G00315.1
MRAERVQMLSCRGISELPAQFIRPPHEQPKNSRALEGLKAPVISLSQPLDQLVLEISKASKEWGFFAIKDHDVPSWLIHRVQEVGQGFFAQPPEEKEKYANDLSKGKYEGYGTKLAKGPDEKIEWIDYFFHIMSPPSRVNYEIWPQNPPNYREVTDEYNRELLRITDEILALLSEGLGLGKNVLKMHLGDGQLELEMKINMYPPCPQPELVLGVEPHTDMSALTILLPNDVPGLQVWKDGNWITVDYIPGALYIHIGDQVEILSNGKYKSILHRSLVNKEQTRMSWAVFCVPPSEMVIGPLGELVDDQNPAKYSTKTYAQYRYHKLNKLPQ
>HU07G00311.1
MSRGLGLVEDAIKGEEIGYVLKINYYPPCPRPDLALGAPAHTDICLLTILVPNNVPGLQVCRDGLWYDVKYIPNALIIHTGDQIEAVLHRTTVNKDRTRMSWPVFIEPPHDHAAGPIAELIDEENPAKYKTKKYGDYKYCKLNKLPQ
>HU07G00314.1
MEVERVQAIASKILDTIPSEFIRSEAEQPAITTAHGSVLEVPTIDLGGGDEDELVRLISKASNEWGLFQVVNHDIPNEVIGNLQRVGKEFFELPQQEKEVYAKPQGHDGDEGYGTKLQREIEGKKAWVDHLFHNIWPPSAINYKFWPTNPPSYREANEEYAKYLRGVAEKLLKYLSRGLGLVEDAIKEGGGGEELGYLLKINYYPPCPRPDLALGVPAHTDMCLLTILVPNDVPGLQVCRDGLWYDVKYIPNALIIHIGDQIEIMSNGKYKAVLHRTTVNKDRTRMSWPVFIEPPHDHAAGPIAELIDEENPAKYKTKKYGDYKYCKLNKLPQ
>HU08G02074.1
METARVQSVASTCTSKEDIPSDFIRPENEQPGITTVGSTDFEIPVIEINESDEERLAKVIAKASSEIGFFQVINHGIPRDVIDNLKRVGKEFFELPPQEKEEYSKLPGSLEGYGTALQKESEGKENIKGWVDHLFHRVWPPHVINHRFWPKNPQSYREATEEYTKYLRGVADKLFRCMSIGLGLEANELKDGAGGENLEYMMKINYYPPCPRPDLALGVPAHTDMSTLTLLVPNEVPGLQICKDGSWYNVDYVPDAIVVHIGDQVEIMSNGKYKAVLHRTTVDKHRTRISWPVFLEPPADFTVGPTPKLINDENPAKYKSKKYRDYAYCKLNKLPQ
>HU10G00088.1
MADDLQHMDSNIIDFSLPSSPSPTMAASELSKLMEYITNWGAFQITNIGLSTEFLDIVLDLSKQFLTLPFEHKKKYLRSPDNPQGFAVDGDPENPSEACNRLFPLISPEREKRPERWPQTPQEFRETMHEFAKPVQKAHDVVMRVMASASGIEEDSFIDGHSEG
>HU0G00229.1
MSEEKLLAKRVQDMVLQGEEDQLPSPYICRNKDKYQDDHDDDVHLAPIPIVDLNQAYVDHPEQPQSLKLALCSWGCFQAIGHGISSSILNNVRKVVKEFFEQPMEEKNKYAKKVEEFEGYGGDPPPEEGQPLDWQDRLCLEVYPQHRRNLHFWPQNPPSFREVLEEYMGKIRLMTETVSKAMARCLDLEEECFVNQFGEGALIQARLNYYSPSRRPDLVMGLKPHADNSGYTLILQDEVQGLQILKDGKWLTVPAYTQAILVLLGDQMEIMTNGAFRSPVHRLLSNAGKVRTSIAVFYTPEPGKEIGPVDGLINEEMNKPRMYKHVKDYADQYWEYYNKGRRAIHIAQL
MAKACTKEDMSAEKLLVKRVQDMVLQGEEDQLPSPYICRNKDKYEDDHDDDVHLSPIPIIDLNEAYVDHPEQLQSLKLALCSWGCFQAIGHGISSSILNNVRKVVKEFFEQPMEEKNKYAKKVEEFEGYGGDPPPEEGQPLDWQDRLCLEVYPQHRRNLHFWPQNPPSFREVLEEYMGKIRLMTETVSKAMARCLDSEEECFMNQFGEGAPIQARLNYYSPSRRPDLVMGLKRHADNSGYTLILQDEVQGLQIL
>HU05G00404.1
MREREMGEVGLNLPIIDLSLPDRCFIAESVRQACIDYGFFYIVNHELDKECLSRLFDESKRFFSLPFEEKMKLSKKEVRGYAPLYSDKLDPSSSQTKADSRESFCIGRLDDEACNLNHWPSEELLPNWRLTIESYYRKVMKAGKSLLSLIALALNLDEKYFETVGVLDKPMTFLRIIRYPGDFSDCSEEILGASAHSDYGIITLLATDGVPGLQVCRDKDQQPRVWEDVLHVEGALIINIGDMTERWTNCLFRSAPHRVVSTGQERYSAAFFFDPPEDFLVECLDSCCSESNAPSYETHPNLSPLPQDAKALGKCKEKCDMSKDVTHATEEACEIGKAASLKIIGDENEVLQLIKEIIKGVEER
>HU07G00315.1
MRAERVQMLSCRGISELPAQFIRPPHEQPKNSRALEGLKAPVISLSQPLDQLVLEISKASKEWGFFAIKDHDVPSWLIHRVQEVGQGFFAQPPEEKEKYANDLSKGKYEGYGTKLAKGPDEKIEWIDYFFHIMSPPSRVNYEIWPQNPPNYREVTDEYNRELLRITDEILALLSEGLGLGKNVLKMHLGDGQLELEMKINMYPPCPQPELVLGVEPHTDMSALTILLPNDVPGLQVWKDGNWITVDYIPGALYIHIGDQVEILSNGKYKSILHRSLVNKEQTRMSWAVFCVPPSEMVIGPLGELVDDQNPAKYSTKTYAQYRYHKLNKLPQ
>HU07G00311.1
MSRGLGLVEDAIKGEEIGYVLKINYYPPCPRPDLALGAPAHTDICLLTILVPNNVPGLQVCRDGLWYDVKYIPNALIIHTGDQIEAVLHRTTVNKDRTRMSWPVFIEPPHDHAAGPIAELIDEENPAKYKTKKYGDYKYCKLNKLPQ
>HU07G00314.1
MEVERVQAIASKILDTIPSEFIRSEAEQPAITTAHGSVLEVPTIDLGGGDEDELVRLISKASNEWGLFQVVNHDIPNEVIGNLQRVGKEFFELPQQEKEVYAKPQGHDGDEGYGTKLQREIEGKKAWVDHLFHNIWPPSAINYKFWPTNPPSYREANEEYAKYLRGVAEKLLKYLSRGLGLVEDAIKEGGGGEELGYLLKINYYPPCPRPDLALGVPAHTDMCLLTILVPNDVPGLQVCRDGLWYDVKYIPNALIIHIGDQIEIMSNGKYKAVLHRTTVNKDRTRMSWPVFIEPPHDHAAGPIAELIDEENPAKYKTKKYGDYKYCKLNKLPQ
>HU08G02074.1
METARVQSVASTCTSKEDIPSDFIRPENEQPGITTVGSTDFEIPVIEINESDEERLAKVIAKASSEIGFFQVINHGIPRDVIDNLKRVGKEFFELPPQEKEEYSKLPGSLEGYGTALQKESEGKENIKGWVDHLFHRVWPPHVINHRFWPKNPQSYREATEEYTKYLRGVADKLFRCMSIGLGLEANELKDGAGGENLEYMMKINYYPPCPRPDLALGVPAHTDMSTLTLLVPNEVPGLQICKDGSWYNVDYVPDAIVVHIGDQVEIMSNGKYKAVLHRTTVDKHRTRISWPVFLEPPADFTVGPTPKLINDENPAKYKSKKYRDYAYCKLNKLPQ
>HU10G00088.1
MADDLQHMDSNIIDFSLPSSPSPTMAASELSKLMEYITNWGAFQITNIGLSTEFLDIVLDLSKQFLTLPFEHKKKYLRSPDNPQGFAVDGDPENPSEACNRLFPLISPEREKRPERWPQTPQEFRETMHEFAKPVQKAHDVVMRVMASASGIEEDSFIDGHSEG
>HU0G00229.1
MSEEKLLAKRVQDMVLQGEEDQLPSPYICRNKDKYQDDHDDDVHLAPIPIVDLNQAYVDHPEQPQSLKLALCSWGCFQAIGHGISSSILNNVRKVVKEFFEQPMEEKNKYAKKVEEFEGYGGDPPPEEGQPLDWQDRLCLEVYPQHRRNLHFWPQNPPSFREVLEEYMGKIRLMTETVSKAMARCLDLEEECFVNQFGEGALIQARLNYYSPSRRPDLVMGLKPHADNSGYTLILQDEVQGLQILKDGKWLTVPAYTQAILVLLGDQMEIMTNGAFRSPVHRLLSNAGKVRTSIAVFYTPEPGKEIGPVDGLINEEMNKPRMYKHVKDYADQYWEYYNKGRRAIHIAQL
Gene tree
Gene tree

Sheng jun & Dong yang Teams, Yunnan agriculture University