Comparison of protein patterns of Streptomyces griseus spores from surface and submerged cultures

Protein patterns of conidia produced by a Streptomyces griseus strain in submerged cultures and on solid media were compared. Cell-free extracts (30 000 X g supernatant) were prepared and analyzed on gradient SDS polyacrylamide gels. The protein patterns of both kinds of conidia were found to be practically identical, and they differed from protein patterns of the old vegetative hyphae in a characteristic way.