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Sphere-Rod Morphogenesis in Arthrobacter crystallopoietes I. Cell Wall Composition and Polysaccharides of the Peptidoglycan¹

^a Departments of Bacteriology and Pharmacology, University of Wisconsin, Madison, Wisconsin 53706

ABSTRACT

Cell walls of Arthrobacter crystallopoietes were prepared from cells grown as spheres and from peptone- and succinate-induced rod stage cells. Undegraded polysaccharide backbones of the peptidoglycans were isolated from myxobacter AL-1 protease digests by ECTEOLA cellulose and Sephadex G-50 chromatography. The polysaccharide backbones of the sphere cell wall peptidoglycan are heterogeneous in their size, and average less than 40 hexosamines per chain. Those of the rod cell walls are homogeneous in size and average 114 to 135 hexosamines per chain.

¹ These studies were conducted in partial fulfillment of the requirements for an M.S. degree in the Department of Bacteriology, University of Wisconsin, Madison, while the senior author was a predoctoral Graduate Fellow of the National Science Foundation.

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