Basic nuclear proteins in the aquatic fungus Achlya ambisexualis.

The complement of basic chromosomal proteins in the aquatic fungus Achlya ambisexualis has been characterized. Achlya nuclei contain proteins with electrophoretic mobilities on acetic acid/urea and dodecyl sulphate polyacrylamide gels which are comparable to rabbit kidney histones H3, H4 and H2A. In contrast, the behavior of putative H2B and H1 proteins from Achlya showed greater analogy on acid/urea gels to higher plant histones. A closely related water fungus Saprolegnia ferax contained basic nuclear proteins which were very similar to those of Achlya.