HYDROLYSIS OF PROTEINS AND NUCLEIC ACIDS BY LANCEFIELD GROUP A AND OTHER STREPTOCOCCI

Author:

Deibel R. H.1

Affiliation:

1. American Meat Institute Foundation, Chicago, Illinois

Abstract

Deibel , R. H. (American Meat Institute Foundation, Chicago, Ill.). Hydrolysis of proteins and nucleic acids by Lancefield group A and other streptococci. J. Bacteriol. 86: 1270–1274. 1963.—Classically, group A streptococci have been considered to be nonproteolytic in spite of the observation that a proteinase is produced in broth cultures. When tested by the plate method, it was observed that 78% of 47 strains were proteolytic when the cultures were incubated anaerobically. Some strains hydrolyzed gelatin aerobically; however, the hydrolysis of casein and pepsin required anaerobic conditions of growth. Other proteins hydrolyzed included wheat gluten and a beef-muscle preparation. The hydrolysis of bovine serum albumin, lactalbumin, sheep plasma, and lysozyme was not detected in plate cultures. The hydrolysis of deoxyribonucleic acid and ribonucleic acid was characteristic of the majority of the strains. Unlike the proteolytic activity, the nucleolytic activity was independent of oxygen tension. Other streptococci were screened for hydrolytic activity; among these strains, only the single strain of Streptococcus sanguis tested possessed proteolytic activity. Deoxyribonuclease activity was observed in “animal” but not “human” group C strains, and in some strains of groups G and L.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference13 articles.

1. A survey of nuclease production by streptococci;BROWN A. L.;J. Bacteriol.,1950

2. BURNETT G. W. M. J. PELCZAR JR. AND H. J. CONN. 1957. Preparation of media p. 37-63. In Society of American Bacteriologists Manual of microbiological methods. McGraw-Hill Book Co. Inc. New York.

3. DUDANI A. J. 1950. Proteolytic and coagulating enzymes of the enterococci. Ph.D. Thesis Iowa State College Ames.

4. A proteolytic enzyme produced by group A streptococci with special reference to its effect on the type-specific M antigen;ELLIOTT S. D.;J. Exptl. Med.,1945

5. The crystallization and serological differentiation of a streptococcal proteinase and its precursor;ELLIOTT S. D.;J. Exptl. Med.,1950

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3