GENETIC CONTROL OF CHLOROPHYLL BIOSYNTHESIS IN CHLAMYDOMONAS
نویسندگان
چکیده
منابع مشابه
Genetic Control of Chlorophyll Biosynthesis in Chlamydomonas
In this report we describe two nonallelic Mendelian protoporphyrin accumulating mutants br(s)-1 and br(c)-1. Results of experiments with these mutants lead us to postulate that porphyrin biosynthesis branches into light and dark steps between protoporphyrin-IX and magnesium protoporphyrin. We hypothesize that the br(c) locus controls a dark step while the br(s) locus either controls a step in t...
متن کاملGENETIC CONTROL OF CHLOROPHYLL BIOSYNTHESIS IN CHLAMYDOMONAS Analysis of Mutants at Two Loci Mediating the Conversion of Protoporphyrin-IX to Magnesium Protoporphyrin
In this report we describe two nonallelic Mendelian protoporphyrin accumulating mutants brs-I and bre-1. Results of experiments with these mutants lead us to postulate that porphyrin biosynthesis branches into light and dark steps between protoporphyrin-IX and magnesium protoporphyrin. We hypothesize that the br e locus controls a dark step while the br s locus either controls a step in the mai...
متن کاملGenome-based examination of chlorophyll and carotenoid biosynthesis in Chlamydomonas reinhardtii.
The unicellular green alga Chlamydomonas reinhardtii is a particularly important model organism for the study of photosynthesis since this alga can grow heterotrophically, and mutants in photosynthesis are therefore conditional rather than lethal. The recently developed tools for genomic analyses of this organism have allowed us to identify most of the genes required for chlorophyll and caroten...
متن کاملIdentification and molecular characterization of a novel Chlamydomonas reinhardtii mutant defective in chlorophyll biosynthesis
The green micro-alga Chlamydomonas reinhardtii is an elegant model organism to study all aspects of oxygenic photosynthesis. Chlorophyll (Chl) and heme are major tetrapyrroles that play an essential role in energy metabolism in photosynthetic organisms and are synthesized via a common branched tetrapyrrole biosynthetic pathway. One of the enzymes in the pathway is Mg chelatase (MgChel) which in...
متن کاملChlorophyll biosynthesis in Chlamydomonas starts with the formation of glutamyl-tRNA.
An RNA moiety has been shown to be involved in the conversion of Glu to delta-aminolevulinic acid (ALA), the first committed intermediate of the chlorophyll pathway. We now have evidence suggesting that in Chlamydomonas, the first reaction for converting Glu to ALA is the aminoacylation of Glu to a Glu-specific tRNA. The Glu-tRNA thus formed could be the substrate for Glu-1-semialdehyde synthes...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1974
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.63.3.806