Chlorophyll Biosynthesis in a Cell-free System from Higher Plants 1
AUTOR(ES)
Rebeiz, Constantin A.
RESUMO
A crude homogenate obtained from greening cucumber (Cucumis sativus, L.) cotyledons in tris-sucrose, pH 7.7, containing coenzyme A, glutathione, potassium phosphate, pH 7.7, methyl alcohol, magnesium, nicotinamide adenine dinucleotide, and adenosine triphosphate, is able to incorporate 4-14C-δ-aminolevulinic acid into chlorophyll a and b in the presence of oxygen. If the homogenates are prepared from etiolated cotyledons which have been exposed to light for two and one-half hours, 14C-chlorophyll a is synthesized. However, when the homogenates are prepared from cotyledons illuminated for four and one-half hours, both 14C-chlorophyll a and b are produced.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=365806Documentos Relacionados
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