Enzyme

The enzyme participates in the flavonoid biosynthesis pathway found in plants. It catalyses the double reduction of anthocyanidins, producing (2R,3R)-flavan-3-ol monomers required for the formation of proanthocyanidins. While the enzyme from the legume Medicago truncatula (MtANR) can use both NADPH and NADH as reductant, that from the crucifer Arabidopsis thaliana (AtANR) uses only NADPH. Also, while the substrate preference of MtANR is cyanidin>pelargonidin>delphinidin, the reverse preference is found with AtANR. cf. EC 1.3.1.112, anthocyanidin reductase [(2S)-flavan-3-ol-forming].

ANR

Enzyme

Anthocyanidin reductase

Enzyme name

EC:1.3.1.77

Entry

Oxidoreductases;Acting on the CH-CH group of donors;With NAD+ or NADP+ as acceptor

Class

(2R,3R)-flavan-3-ol:NAD(P)+ 3,4-oxidoreductase

Sysname

a (2R,3R)-flavan-3-ol + 2 NAD(P)+ = an anthocyanidin with a 3-hydroxy group + 2 NAD(P)H + H+ [RN:R07351 R07352]

Reaction

anthocyanidin with a 3-hydroxy group [CPD:C21381];NADH [CPD:C00004];NADPH [CPD:C00005];H+ [CPD:C00080]

Product

Species information

Averrhoa carambola

Species name

Averrhoa carambola is a species of eudicot in the family Oxalidaceae (wood-sorrel family).

Species info

Gene sequence info

Averrhoa_carambola.ANR.fa

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MVVSSFCKVCVTGDDSSKVDLLKSFPGADERLVSFQADIYSPNEFEKAIEGCKFVFHVATPLQHTEGHQFKNIVEAAVTGAKSIESSCVRSGTVKRLIYTGSVVAASPWKDDGTGFKDSMDETCWTLLHLPFAYSTDHLQAYTESKTQTEKELLSDGNKGDGGGLMEVVALNCGLVGGDTLLSYTPLSVAVFVPQLTNNEVNYHSLRYLEELLGKVSIVHIDDVCEAHIFCAENPSTNGRFLCASSYVSSVEIADYYQQNYPEFHVKPEQVYSYILFSL

Gene tree

Gene tree

Sheng jun & Dong yang Teams, Yunnan agriculture University