| streptolysin | A haemolysin produced by streptococci. (05 Mar 2000) |
|---|---|
| streptolysin O | Oxygen labile thiol activated haemolysin (68 kD). Haemolysis is inhibited by cholesterol and only cells with cholesterol in their membranes are susceptible. Toxin aggregates are linked to cholesterol to form a channel 30 nm diameter in the membrane and nonosmotic lysis follows. Markedly inhibits neutrophil movement and stimulates secretion, but has little effect on monocytes. (18 Nov 1997) |
| streptolysin S | Thought to be a peptide of 28 residues: causes zone of _ haemolysis around streptococcal colonies on blood agar. Mechanism of haemolysis unclear. Toxic to leucocytes, platelets and several cell lines. (18 Nov 1997) |
| streptolysins | Exotoxins produced by certain strains of streptococci, particularly those of group a, that lyse red blood cells. (12 Dec 1998) Previous: streptokinase-streptodornase, streptolydigin, streptolysin, streptolysin ONext: streptolysin S, Streptomyces, Streptomyces albusstreptolysin S Thought to be a peptide of 28 residues: causes zone of _ haemolysis around streptococcal colonies on blood agar. Mechanism of haemolysis unclear. Toxic to leucocytes, platelets and several cell lines. (18 Nov 1997) |
| Streptomyces | Genus of gram-positive spore forming bacteria that grow slowly in soil or water as a branching filamentous mycelium similar to that of fungi. Important as the source of many antibiotics, for example streptomycin, tetracycline, chloramphenicol, macrolides. (18 Nov 1997) |
| Streptomyces albus | A species found in dust, soil, grains, and straw; some strains produce actinomycetin; others produce thiolutin or endomycin; it is the type species of the genus Streptomyces. (05 Mar 2000) |
| streptomyces antibioticus | An actinomycete from which the antibiotic oleandomycin is obtained. (12 Dec 1998) |
| streptomyces aureofaciens | An actinomycete from which the antibiotic chlortetracycline is obtained. (12 Dec 1998) |
| Streptomyces gibsonii | A species found in human infections. Synonym: Nocardia gibsonii. (05 Mar 2000) |
| streptomyces griseus | An actinomycete from which the antibiotics streptomycin, grisein, and candicidin are obtained. (12 Dec 1998) |
| Streptomyces griseus neutral proteinase | <enzyme> Component of pronase; included in the group of microbial metalloproteinases EC 3.4.24.4 Chemical name: streptomyces griseus protease 3 Registry number: EC 3.4.24.- (26 Jun 1999) |
| Streptomyces lividans TK24 protease | <enzyme> Mw 22 kD Registry number: EC 3.4.24.- Synonym: prt protein, prt gene product, tk24 protease (26 Jun 1999) |
| Streptomyces somaliensis | A species that causes Bouffardi's white mycetoma. (05 Mar 2000) |
| streptomycetaceae | A family of soil bacteria. It also includes some parasitic forms. (12 Dec 1998) |
| streptomycete | A term used to refer to a member of the genus Streptomyces; it is sometimes improperly used to refer to any member of the family Streptomycetaceae. (05 Mar 2000) |