Abstract:We have isolated a crude nuclear preparation from the unicellular red alga Porphyridium aerugineum and investigated the structure of Porphyridium chromatin. Electrophoresis of deproteinized DNA fragments produced by micrococcal nuclease digestion of Porphyridium nuclei gives a typical ladder pattern, indicative of a repeating structure. The DNA repeat-length, calculated from plots of multimer length against multimer number, varies somewhat between different digestions, ranging from 160 to 180 base-pairs (avera… Show more
“…of Peridinium balticum (Rizzo, 1982), and the red alga Porphyridium (Barnes et al, 1982). Only for Euglena (Jardine & Leaver, 1978) have these histones been characterized in terms of their vertebrate counterparts.…”
“…of Peridinium balticum (Rizzo, 1982), and the red alga Porphyridium (Barnes et al, 1982). Only for Euglena (Jardine & Leaver, 1978) have these histones been characterized in terms of their vertebrate counterparts.…”
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