The organism C. caldarium RK1 is a unicellular red alga.
We propose it as a simple model red algal cell. The features of its chloroplast genome seem to resemble a very old stage in plastid development.
For more details read the
abstract of the paper published in J. Mol. Evol. (2000) Oct;51(4):382-90
|size of direct repeat||186 bp|
|av. intergenic spacer size||71 bp|
Gene classes on the C. caldarium plastome
|Amino acid biosynthesis||8|
|Biosynthesis of cofactors, prosthetic groups, and carriers||12|
|Central intermediary metabolism||1|
|Fatty acid, phospholipid, and sterol metabolism||5|
|Photosynthesis and respiration||54|
|DNA replication, restriction, modification, recombination, and repair||1|
|Translport and binding proteins||2|
Comparison with P. purpurea
Since the chloroplast genome sequence of a higher red alga Porphyra purpurea is known
we compared the two genomes.
Fig. 1 Synteny regions as detected via a simplot. The simplot tool (J. April, pers. com.) uses similarity scores to compare two sequences. The blue boxes represent the unique genes in each organism. The grey diagonal area marks the region in which local rearrangments occurred. One region cannot readily be aligned (grey rectangle).
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