Chlorophylls c1 and c2

A New Form of Chlorophyll c Involved in Light-Harvesting

“…1 B). Since P. tricornutum is known to possess both Chl c, and Chl c2 (25), it was apparent that the fraction from P. gyrans which had been identified as Chl c2 was in fact a previously undescribed pigment. One potential concern was that this new pigment might be a chromatographic artifact.…”

“…Originally, two forms of Chl c were recognized, both of which have acrylic acid groups at C7 (15). Chl cl has an ethyl group present at position C4 in ring II ofthe Chl macrocycle, whereas Chl c2 has a vinyl group in this position (4,25). This difference is not sufficient to enable separation in most conventional chromatographic systems, such as cellulose TLC or RP2-HPLC.…”

A rapid method for extraction of oxygen‐evolving photosystem 2 preparations from cyanobacteria

“…Chlorophyll a was measured as in [9]. Oxygen evolution was measured in a Rank oxygen electrode attached to an MSE spectroplus, using a 150 W or 1000 W tungsten-iodine lamp for illumination with 2 cm water as heat shield.…”

Algal Pigment Systems

“…These compounds are in fact porphyrin rather than ch10rin derivatives ("hybrid" molecules), with ring IV unsaturated like a porphine (47), but with a cyc10pentanone ring and central magnesium atom like a chlorophyll (52)(53)(54)(55) (Fig. 3A).…”