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Table 1 General features of Oltmannsiellopsis and other chlorophyte cpDNAs

From: The complete chloroplast DNA sequence of the green alga Oltmannsiellopsis viridis reveals a distinctive quadripartite architecture in the chloroplast genome of early diverging ulvophytes

Feature Nephroselmis Chlorella Oltmannsiellopsis Pseudendoclonium Chlamydomonas
Size (bp)      
   Total 200,799 150,613 151,933 195,867 203,827
   IR 46,137 --a 18,510 6,039 22,211
   LSC 92,126 --a 33,610 140,914 81,307b
   SSC 16,399 --a 81,303 42,875 78,088b
A+T (%) 57.9 68.4 59.5 68.5 65.5
Coding sequences (%)c 68.7 60.9 59.2 62.3 50.1
Genes (no.)d 128 112 105 105 94
Introns (no.)      
   Group I 0 3 5 27 5
   Group II 0 0 0 0 2
  1. a Because Chlorella cpDNA lacks an IR, only the total size of this genome is given.
  2. b The LSC and SSC regions of Chlamydomonas cpDNA cannot be distinguished unambiguously.
  3. c Conserved genes, unique ORFs and introns were considered as coding sequences.
  4. d Genes present in the IR were counted only once. Unique ORFs and intron ORFs were not taken into account.