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. 1988 Dec;170(12):5963-7.
doi: 10.1128/jb.170.12.5963-5967.1988.

Immunoelectron microscopic localization of small, acid-soluble spore proteins in sporulating cells of Bacillus subtilis

S C Francesconi  1 , T J MacAlister, B Setlow, P Setlow
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Immunoelectron microscopic localization of small, acid-soluble spore proteins in sporulating cells of Bacillus subtilis

S C Francesconi et al. J Bacteriol. 1988 Dec.

Abstract

Small, acid-soluble spore proteins SASP-alpha, SASP-beta, and SASP-gamma as well as a SASP-beta-lacZ gene fusion product were found only within the forespore compartment of sporulating Bacillus subtilis cells by using immunoelectron microscopy. The alpha/beta-type SASP were associated almost exclusively with the forespore nucleoid, while SASP-gamma was somewhat excluded from the nucleoid. These different locations of alpha/beta-type and gamma-type small, acid-soluble spore proteins within the forespore are consistent with the different roles for these two types of proteins in spore resistance to UV light.

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