The activity of the pneumococcal autolytic system and the fate of the bacterium during ingestion by rabbit polymorphonuclear leukocytes.

Abstract:

:The extent to which autolytic microbial enzymes are involved in the fate of microorganisms ingested by phagocytes has not been determined. It is known, however, that activation of degradative enzymes occurs during certain microbicidal events. We examined the possible role of the pneumococcal autolytic enzyme (an N-acetylmuramyl-L-alanine amidase) in the loss of viability and degradation of pneumococci during phagocytosis by rabbit polymorphonuclear leukocytes. Three bacterial systems were compared: (a) wild type pneumococci with an active autolytic system; (b) wild type bacteria grown under conditions that block the endogenous autolytic activity and (c) a mutant strain defective in the major autolytic enzyme of this bacterium. No differences could be detected between the autolysis-positive and negative bacteria in the rate of killing and in the fate of macromolecular cell constituents during ingestion by rabbit peritoneal polymorphonuclear leukocytes.

journal_name

J Cell Physiol

authors

Tomasz A,Beckerdite S,McDonnell M,Elsbach P

doi

10.1002/jcp.1040920203

subject

Has Abstract

pub_date

1977-08-01 00:00:00

pages

155-60

issue

2

eissn

0021-9541

issn

1097-4652

journal_volume

92

pub_type

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