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Fig. 5. Accumulation of His-tagged GFP (AtpC4-His) in the central region of the
plastid in P. tricornutum. (A) Top, GFP fluorescence; bottom,
superimposed GFP and chlorophyll fluorescence (the red chlorophyll
fluorescence marks the two lobes of the plastids, P). The fusion protein
appears to accumulate between the two plastid lobes. (B) Electron micrograph
of a P. tricornutum cell immuno-decorated with antisera against GFP.
GFP accumulates in the central region of the plastid (arrow), where two
plastid lobes are connected. Py, pyrenoid; M, mitochondrium; N, nucleus; V,
vacuole. Bars, 5 µm (A); 0.2 µm (B).