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

Table 3 Compared sizes of expanded genes in Oltmannsiellopsis and other UTC algal cpDNAs

Gene	Chlorella		Oltmannsiellopsis		Pseudendoclonium		Chlamydomonas
	Size (bp)	Expansion^a	Size (bp)	Expansion^a	Size (bp)	Expansion^a	Size (bp)	Expansion^a
cemA	801	1.6	1059	2.2	909	1.8	1503	3.0
ftsH	5163	1.9	6879	2.6	7791	2.9	8916	3.3
rpoA	837	0.9	1527	1.6	1734	1.8	2213^b	2.3
rpoB	3906	1.2	4251	1.3	6537	2.0	4967^c	1.5
rpoC1	2511	1.3	3066	1.5	4737	2.4	5739^c	2.9
rpoC2	4689	1.3	5580	1.5	10389	2.8	9363	2.5
ycf1	2460	2.0	2427	2.0	2505	2.0	5988	4.9

^a Size relative to the corresponding gene in Mesostigma. Each value was obtained by dividing the size of the UTC algal gene by the size of the Mesostigma gene.
^b The indicated size is derived from our unpublished sequence data. We found that a portion of the rpoA coding sequences is missing in [GenBank:NC_005353] as a result of a sequencing error introducing a frameshift mutation.
^c The indicated size includes the intergenic spacer separating the ORFs corresponding to the 5' and 3' portions of the gene.

ISSN: 1741-7007