Streptococcus Durans N. SP.

Strain variation within Streptococcus faecium var. durans.

Aryl-L-aminoacylamidase activities in extracts of Streptococcus durans.

Two distinct enzymes with aryl-l-aminoacylamidase activity were found in cellular extracts of Streptococcus durans. One of these enzymes was strictly an arylamidase lacking any observable N-terminal exopeptidase activity. The other enzyme functioned as an aminopeptidase capable of catalyzing the hydrolysis of a variety of l-peptide and arylamide substrates. The arylamidase (molecular weight, 80...

Enteric Streptococcus Durans--an Adhering Streptococcus as a Cause of Diarrhea in Suckling Piglets?

Folate reductase and specific dihydrofolate reductase activities of the amethopterin-sensitive Streptococcus faecium var. durans.

Preliminary evidence is presented that indicates that the dihydrofolate reductase activity of amethopterin-sensitive Streptococcus faecium var. durans ATCC 8043 is separable into two dihydrofolate reductases, one of which also reduces folate.

Evidence of genetic transformation in Streptococcus faecium var. durans (SF-O).

A number of species in the genus Streptococcus have been shown to undergo deoxyribonucleic acid (DNA)-mediated transformation. The first report of transformation in two strains of "viridans" streptococci was by R. M. Bracco et al. (J. Exptl. Med. 106:247, 1957). Following this, R. Pakula and associates (Bull. Acad. Polon. Sci., Ser. Sci. Biol. 6:319, 1958; Schweiz. Z. Allgem. Pathol. Bakteriol....