WebDec 22, 2024 · Isomerization of prolycopene to red-colored lycopene is carried out by carotene isomerase ( CRTISO ). Lycopene is further metabolized to produce β-carotene, zeaxanthin, violaxanthin, and neoxanthin, which is catalyzed by two classes of lycopene beta cyclases ( LCY-bs, CYC-b ). WebJan 5, 2015 · Lycopene is cyclized by β-LCY and ε-LCY or β-LCY to produce α-carotene or β-carotene. These carotenes are further hydroxylated to produce xanthophylls (e.g. lutein and zeaxanthin). The cleavage of β-carotene branch by CCDs and NCEDs produces various volatiles (e.g. β-citraurin, etc.) and phytohormones (strigolactones and abscisic acid).

kiwifruit lycopene beta-cyclase plays a significant role in …

WebSep 18, 2009 · The conversion of lycopene to β-carotene is catalysed by the β cyclase enzyme ( Cunningham et al., 1994; Hugueney et al., 1995; Pecker et al., 1996 ). The ϵ and β cyclase enzymes are products of related genes, but the ϵ cyclase only adds one ϵ ring to lycopene, whereas the β cyclase can add two β rings. WebJun 24, 2012 · Two enzymes, lycopene ε-cyclase (LCYe) and lycopene β-cyclase (LCYb), which share high similarity in amino acid sequence and likely evolved from the same ancestor, have been confirmed to catalyze the cyclization of lycopene (Sandmann 2002 ). thin utility knife blades

Cloning and characterization of the cDNA for lycopene β-cyclase …

WebSep 18, 2009 · Beta- and α-carotene are redundantly hydroxylated by non-haem (CHY1, CHY2) as well as cytochrome P450 (CYP97A and CYP97C) hydroxylases. Hydroxylation … WebThis enzyme converts lycopene to β-carotene by catalyzing the formation of two β-rings at each end of the linear carotene. The enzyme interacts with half of the carotenoid … WebLycopene is the red-pigmented, prominent β-carotenoid present in tomatoes and human plasma. It is an acyclic isomer of beta-carotene also present in fruits like watermelons, … thin uterus pregnancy