3'end maturation of the Chlamydomonas reinhardtii chloroplast atpB mRNA is a two-step process.
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چکیده
منابع مشابه
A 3' stem/loop structure of the Chlamydomonas chloroplast atpB gene regulates mRNA accumulation in vivo.
The Chlamydomonas reinhardtii chloroplast atpB mRNA contains sequences at its 3' end that can form a complex stem/loop structure. Deletions of part or all of this sequence in transformed C. reinhardtii cells led to decreased atpB mRNA accumulation, whereas transcription rates were unaffected. The reduction of mRNA to 20% to 35% of wild-type levels in transformants without 3' stem/loops was corr...
متن کاملChloroplast DNA replication is regulated by the redox state independently of chloroplast division in Chlamydomonas reinhardtii.
Chloroplasts arose from a cyanobacterial endosymbiont and multiply by division. In algal cells, chloroplast division is regulated by the cell cycle so as to occur only once, in the S phase. Chloroplasts possess multiple copies of their own genome that must be replicated during chloroplast proliferation. In order to examine how chloroplast DNA replication is regulated in the green alga Chlamydom...
متن کاملThe RNA Structure of cis-acting Translational Elements of the Chloroplast psbC mRNA in Chlamydomonas reinhardtii
Photosystem II is the first of two light-driven oxidoreductase complexes in oxygenic photosynthesis. The biogenesis of photosystem II requires the synthesis of polypeptide subunits encoded by the genomes in the chloroplast and the nucleus. In the chloroplast of the green alga Chlamydomonas reinhardtii, the synthesis of each subunit requires interactions between the 5' UTR of the mRNA encoding i...
متن کاملTCA1, a single nuclear-encoded translational activator specific for petA mRNA in Chlamydomonas reinhardtii chloroplast.
We isolated seven allelic nuclear mutants of Chlamydomonas reinhardtii specifically blocked in the translation of cytochrome f, a major chloroplast-encoded subunit of the photosynthetic electron transport chain encoded by the petA gene. We recovered one chloroplast suppressor in which the coding region of petA was now expressed under the control of a duplicated 5' untranslated region from anoth...
متن کاملIdentification of a new chloroplast carbonic anhydrase in Chlamydomonas reinhardtii.
Carbonic anhydrases (CA) are zinc-containing metalloenzymes that catalyze the reversible hydration of CO2. The three evolutionarily unrelated families of CAs are designated alpha-, beta-, and gamma-CA. Aquatic photosynthetic organisms have evolved different forms of CO2 concentrating mechanisms (CCMs) to aid Rubisco in capturing CO2 from the surrounding environment. One aspect of all CCMs is th...
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ژورنال
عنوان ژورنال: Molecular and Cellular Biology
سال: 1993
ISSN: 0270-7306,1098-5549
DOI: 10.1128/mcb.13.4.2277