Endosymbiotic origin of mitochondria and plastids - PowerPoint PPT Presentation

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Endosymbiotic origin of mitochondria and plastids

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Endosymbiotic origin of mitochondria and plastids Polycistronic mRNAs Prokaryotic like mRNA in plastid Comparison of genome sizes Huge variation in size of ... – PowerPoint PPT presentation

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Title: Endosymbiotic origin of mitochondria and plastids


1
Endosymbiotic origin of mitochondria and plastids
2
Polycistronic mRNAs
3
Prokaryotic like mRNA in plastid
4
Comparison of genome sizes
5
Huge variation in size of mitochondrial genomes
6
Plant mitochondrial genomes exist as subgenomic
circles
A Inverted repeats B Direct repeats
7
Smallest mitochondrial genome most derived
8
Promiscuous DNA
9
Nucleus and plastid encoded gene products in a
single enzyme
10
Coordinate expression of nuclear and chloroplast
genes
11
Accumulation of Rubisco requires stoichiometric
assembly of subunits
12
Thylakoid proteins are synthesized on membrane
bound ribosomes
13
Steps in the synthesis of a protein possible
points of regulation
14
Cofactor requirement for stable protein
accumulation
15
Steps in the synthesis of D1
16
Translational regulation of plastid mRNAs via
nuclear gene products
17
Regulation by products of photosynthesis
Redox
Adenine nucleotides
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