Assertion: chloroplast's protein | /r/AtLocation | online resource
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text: As already known, most chloroplast-encoded proteins have a deep origin within the cyanobacterial clade: namely, chloroplast proteins diverged early after the diversification of some basal groups (Yellowstone strains of Synechococcus, and Pseudanabaena) as shown in Online Resource 4, although the exact branch point is different in different studies (Ponce-Toledo et al. 2017; Shih et al. 2013).