The periplasmic space in Thermus thermophilus: evidence from a regulation-defective S-layer mutant overexpressing an alkaline phosphatase
The presence of a periplasmic space within the cell envelope of Thermus thermophilus was
analyzed in a mutant (HB8ΔUTR1) defective in the regulation of its S-layer (surface
crystalline layer). This mutant forms round multicellular bodies (MBs) surrounded by a
common envelope as the culture approaches the stationary phase. Confocal microscopy
revealed that the origin of the MBs is the progressive detachment of the external layers
coupled with the accumulation of NH 2-containing material between the external envelopes …
analyzed in a mutant (HB8ΔUTR1) defective in the regulation of its S-layer (surface
crystalline layer). This mutant forms round multicellular bodies (MBs) surrounded by a
common envelope as the culture approaches the stationary phase. Confocal microscopy
revealed that the origin of the MBs is the progressive detachment of the external layers
coupled with the accumulation of NH 2-containing material between the external envelopes …
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