Download Advances in Microbial Physiology, Volume 19 by A.H. Rose (Editor), J. Gareth Morris (Editor) PDF

By A.H. Rose (Editor), J. Gareth Morris (Editor)

This quantity in a research-level sequence covers different elements of microbial body structure and biochemistry together with inositol metabolisms in yeasts, bacterial adhesion, natural acids, the bacterial flagellum and the mechanical behaviour of bacterial mobilephone partitions. it really is meant to be of use to microbiologists, biochemists and biotechnologists. different similar works during this sequence are volumes 29, 30 and 31.

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Extra info for Advances in Microbial Physiology, Volume 19

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However, in contrast to streptococcal growth, the septum closes at a relatively early stage in the process. There is again a gradient of thickness in the developing pole, and a good deal of remodelling during and after cell separation. Because the septum closes considerably before pole formation is complete, cell separation and closure appear as much more distinct processes than in streptococci. The poles ofB. subtilis, however, account for only about 15% of the peripheral wall instead of all of it as they do in streptococci.

Scalelines represent 5 p m (Aand C), 100pm (B) and 20pm (D) (from Fein and Rogers, 1976). BIOGENESIS OF THE WALL IN BACTERIAL MORPHOGENESIS 33 as well as an assimilable carbon source in the growth medium (see p. 23), glycosylation of the wall, autolytic activity, flagellation and motility are all partially restored (J. E. Fein, unpublished work). It is therefore tempting to suggest that one function of autolytic enzymes is to aid penetration of the wall, so that the flagellin can polymerize to make organized flagella but, since some form of regulation is involved in all of the mutants, dogmatic conclusions are not justified.

Rod C mapped in a similar but not identical position to rod A. It was only maintained as a rod by high concentrations of salt (glutamate was ineffective) and it had a lower content of wall teichoic acid when growing as a coccus. The other group of mutant strains always grew as cocci and the expression of the phenotype was not conditional. , 1970) but subsequent work (M. McConnell and H. J. Rogers, unpublished work) showed that it was almost certainly a multiple mutant and was not examined further.

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