Abstract:
:Groman, Neal B. (University of Washington, Seattle) and Grace Suzuki. Quantitative study of endolysin synthesis during reproduction of lambda phages. J. Bacteriol. 86:187-194. 1963.-Endolysin is presumed to be a phage-induced enzyme participating in lysis through its destructive action on the host cell wall. A method for assaying endolysin is described, which was utilized in studying endolysin synthesis at 37 and 44 C by induced strains of K-12 (lambda), K-12 (lambdatem), and K-12 (lambda112). In all cases, endolysin was detected prior to the appearance of mature, intracellular phage and was detected earlier at 44 C than at 37 C. It was synthesized at a linear rate, as was phage, and both syntheses terminated at the same time. Surprisingly, endolysin also accumulated under conditions in which induced K-12 (lambda112) exhibited lysis inhibition. Under these conditions, endolysin concentration per induced cell was 2 to 2.5 times that produced by normally lysing K-12 (lambda). Since alterations introduced into the lytic process by temperature, mutation, or both correlate well with the timing and rate of endolysin synthesis, the data tend to support the concept that endolysin determines the kinetics of the process. However, the accumulation of endolysin during lysis inhibition suggests the need for alternative hypotheses. One hypothesis is that although endolysin action is the key to lysis some preliminary steps are required to release the enzyme so that it may contact its substrate in the cell wall. A second hypothesis is that basically the lytic process involves an alteration in the permeability barrier of the cell and that lytic enzymes such as endolysin have evolved as an auxillary but dispensable mechanism to this process.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
GROMAN NB,SUZUKI Gdoi
10.1128/JB.86.2.187-194.1963keywords:
subject
Has Abstractpub_date
1963-08-01 00:00:00pages
187-94eissn
0021-9193issn
1098-5530journal_volume
86pub_type
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journal_title:Journal of bacteriology
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doi:10.1128/jb.170.11.5360-5363.1988
更新日期:1988-11-01 00:00:00
abstract::An increase in the apparent molecular weight of the principal outer membrane protein (POMP) of Neisseria gonorrhoeae is associated with introduction of the penB2 genetic marker, which results in low-level, relatively nonspecific antibiotic resistance. Limited proteolysis of the two forms of POMP showed that they had f...
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doi:10.1128/JB.143.2.847-851.1980
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doi:10.1128/JB.145.1.106-112.1981
更新日期:1981-01-01 00:00:00
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pub_type: 杂志文章
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doi:10.1128/JB.88.6.1700-1704.1964
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journal_title:Journal of bacteriology
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doi:10.1128/JB.145.3.1445-1447.1981
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doi:10.1128/jb.178.21.6352-6356.1996
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pub_type: 杂志文章
doi:10.1128/JB.94.2.283-290.1967
更新日期:1967-08-01 00:00:00
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doi:10.1128/JB.126.3.1271-1277.1976
更新日期:1976-06-01 00:00:00
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更新日期:2003-04-01 00:00:00
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doi:10.1128/jb.170.11.5200-5207.1988
更新日期:1988-11-01 00:00:00
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doi:10.1128/jb.176.6.1570-1577.1994
更新日期:1994-03-01 00:00:00
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更新日期:1998-03-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.100.2.836-845.1969
更新日期:1969-11-01 00:00:00
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journal_title:Journal of bacteriology
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更新日期:1995-11-01 00:00:00
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更新日期:1995-03-01 00:00:00