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The Journal of General Physiology, Vol 41, 77-90, Copyright © 1957 by The Rockefeller University Press

ARTICLE

PROPERTIES OF PHYCOBILINS FROM PORPHYRA NAIADUM

R. L. Airth 1 and L. R. Blinks 1

1 From the Hopkins Marine Station of Stanford University, Pacific Grove

The phycobilin pigments were freshly extracted from Porphyra naiadum in the cold.

At least two types of phycoerythrin (I and II) can be distinguished by electrophoresis, chromatography, and spectral characteristics.

At pH 5.0 phycoerythrin II has a relatively large negative charge, while phycoerythrin I is nearly iso-electric. At pH 7.0, however, phycoerythrin I has the larger negative charge. Mobilities have been calculated by visual measurement of electrophoresis.

Phycoerythrin II can be converted to phycoerythrin I by storing at pH 7.0.

Chromatography indicates at least two types of phycocyanin as well.

Submitted on March 28, 1957


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