Results 131 to 140 of about 2,400 (162)

On the substrate‐ and stereospecificity of the plant carotenoid cleavage dioxygenase 7 [PDF]

open access: yesFEBS Letters, 2014
Strigolactones are phytohormones synthesized from carotenoids via a stereospecific pathway involving the carotenoid cleavage dioxygenases 7 (CCD7) and 8. CCD7 cleaves 9‐cis‐β‐carotene to form a supposedly 9‐cis‐configured β‐apo‐10′‐carotenal. CCD8 converts this intermediate through a combination of yet undetermined reactions into the strigolactone‐like
Mark Bruno   +2 more
exaly   +5 more sources

Functional characterization of CmCCD1, a carotenoid cleavage dioxygenase from melon

Phytochemistry, 2006
Carotenoids are nutritionally important tetraterpenoid pigments that upon oxidative cleavage give rise to apocarotenoid (norisoprene) aroma volatiles. beta-Carotene is the predominant pigment in orange-fleshed melon (Cucumis melo L.) varieties, reaching levels of up to 50 microg/gFW.
Mwafaq Ibdah   +2 more
exaly   +3 more sources

Phylogenetic analysis and evolutionary studies of plant carotenoid cleavage dioxygenase gene

Gene, 2014
The oxidative breakdown of carotenoid evidences the formation of apocarotenoids through carotenoid cleavage dioxygenases (CCDs). Numerous CCDs and apocarotenoids have been identified and characterized in plants. Using available sequence data, a study was performed to investigate the phylogenetic relationship among CCD genes and to statistically ...
Ramamoorthy Siva
exaly   +3 more sources

In planta cleavage of carotenoids by Arabidopsis carotenoid cleavage dioxygenase 4 in transgenic rice plants

Plant Biotechnology Reports, 2016
A family of carotenoid cleavage dioxygenases (CCDs) produces diverse apocarotenoid compounds via the oxidative cleavage of carotenoids as substrates. Their types are highly dependent on the action of the CCD family to cleave the double bonds at the specific position on the carotenoids.
Mi-Hee Song   +8 more
openaire   +1 more source

Expression and Characterization of Mammalian Carotenoid Cleavage Dioxygenases

2019
Carotenoid cleavage dioxygenases (CCDs) are nonheme iron enzymes that catalyze double bond processing of carotenoids and their apocarotenoid metabolites. Mammalian genomes encode three members of this protein family, namely BCO1, BCO2, and RPE65. Mutations and genetic polymorphism in the corresponding genes are associated with inherited blinding ...
Linda Dora, Thomas   +2 more
openaire   +2 more sources

Substrate specificity and kinetics for VP14, a carotenoid cleavage dioxygenase in the ABA biosynthetic pathway

open access: yesBiochimica Et Biophysica Acta - General Subjects, 2003
The plant growth regulator, abscisic acid (ABA), is synthesized via the oxidative cleavage of an epoxy-carotenoid. Specifically, a double bond is cleaved by molecular oxygen and an aldehyde is formed at the site of cleavage in both products. The Vp14 gene from maize encodes an oxidative cleavage enzyme for ABA biosynthesis and the recombinant VP14 ...
Steven H Schwartz   +2 more
exaly   +4 more sources

Characteristics of a new carotenoid cleavage dioxygenase NtCCD10 derived from Nicotiana tabacum

Planta, 2022
A new carotenoid cleavage dioxygenase NtCCD10 from tobacco was characterized. There is some difference between NtCCD10 and CCD1 in structure. NtCCD10 can cleave the C5-C6 (C5'-C6') and C9-C10 (C9'-C10') double bonds of carotenoids and has high catalytic activity.
Fan Li   +5 more
openaire   +2 more sources

Enzymology of the carotenoid cleavage dioxygenases: Reaction mechanisms, inhibition and biochemical roles

Archives of Biochemistry and Biophysics, 2014
Carotenoid cleavage dioxygenases (CCDs) are a large family of non-heme iron (II) dependent enzymes. CCDs catalyse the selective oxidative cleavage of carotenoids to produce apocarotenoids. Apocarotenoid derived molecules form important signalling molecules in plants in the form of abscisic acid and strigolactone and in mammals in the form of retinal ...
Peter J, Harrison, Timothy D H, Bugg
openaire   +2 more sources

ZmCCD7/ZpCCD7 encodes a carotenoid cleavage dioxygenase mediating shoot branching

Planta, 2016
ZmCCD7/ZpCCD7 encodes a carotenoid cleavage dioxygenase that may mediate strigolactone biosynthesis highly responsive to phosphorus deficiency and undergoes negative selection over domestication from Zea ssp. parviglumis to Zea mays. Carotenoid cleavage dioxygenase 7 (CCD7) functions to suppress shoot branching by controlling strigolactone biosynthesis.
Xiaoying, Pan   +4 more
openaire   +2 more sources

Carotenoid Cleavage Dioxygenases of Crocus sativus L.

2016
Carotenoid cleavage dioxygenases (CCDs) form a multienzyme family, the members of which are involved in the production of a diversity of apocarotenoids. The apocarotenoid module vital physiological and developmental processes in plants. This chapter deals with the different aspects of plant CCDs in general and C. sativus in particular such as structure
Shoib Ahmad Baba, Nasheeman Ashraf
openaire   +1 more source

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