PURIFICATION OF A STREPTOCOCCAL BACTERIOCIN (VIRIDIN-B) AND ITS SEPARATION FROM ALPHA-HEMOLYSIN

被引:5
作者
APELGREN, LD [1 ]
DAJANI, AS [1 ]
机构
[1] WAYNE STATE UNIV, SCH MED, DEPT PEDIAT, DETROIT, MI 48201 USA
关键词
D O I
10.1128/AAC.15.3.436
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Viridin B, a bacteriocin produced by Streptococcus mitis, copurified with the alpha-hemolysin after ammonium sulfate precipitation and gel filtration on Sephadex G-200. The bacteriocin and hemolysin were separated in some instances by ion-exchange chromatography on diethylaminoethyl-Sephadex A-50, but the two substances were shown to be distinct after polyacrylamide gel electrophoresis. Attempts at recovery of nonhemolytic or nonbacteriocinogenic mutants were unsuccessful after exposure to mutagenic agents. The molecular weight of viridin B was determined to be approximately 87,000.
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页码:436 / 439
页数:4
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