periplasm


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periplasm

[′per·ə‚plaz·əm]
(cell and molecular biology)
The region between the cytoplasmic and outer membranes of a cell.
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They found that varying the length of the LppA protein varied the width of the periplasm along with the length of the rod.
Based on the origin of plastids from an endosymbiotic cyanobacterium, PpPBP must localize to the intermembrane space where peptidoglycan is present, because PBPs function in the periplasm where new peptidoglycan monomer units join pre-existing peptidoglycans in bacteria.
Development of a simple method for the recovery of recombinant proteins from the Escherichia coli periplasm.
As bdellovibrio enters the prey periplasm, the flagellar motility stops and then it sheds its flagellum.
Expressed proteins can be recovered from the periplasm or released extracellularly.
Furthermore, the substantial synergy of the OA/Ap combination in preventing the growth of non-pathogenic Escherichia colt MC1061 cannot be explained by inhibition of [beta]-lactamase translocation to the periplasm, since this was found to be diminished by only 25%.
This system comprises more than a dozen interacting proteins and serves to export toxin and other proteins such as extracellular enzymes from the periplasm across the outer membrane (25).
The peptidoglycan layer and the rotary-motor flagella, in the characteristic spirochete-specific "n:2n:n" patterned array lie in the periplasm (pe at arrowhead in Fig.
Since periplasmic targeting of antigens has been shown to be effective in delivering heterologous antigens, we investigated whether the expression of chlamydial outer membrane protein, PorB, in the periplasm of VCG would lead to a robust antigen expression.
The PhoA component of this fusion construct shows whether IcsA has been secreted across the cytoplasmic membrane to the periplasm of Shigella since the PhoA is only active in the periplasm.
The TonB protein spans the periplasm and is anchored to the cytoplasmic membrane and interacts with receptors in the outer membrane to facilitate the uptake of several nutrients or growth factors, including iron-siderophore complexes.
As late as the early 1970s science was unaware that the periplasm existed; now we know it is the extracytoplasmic compartment found in gram-negative bacteria figuring in protein transport, folding, cell architecture, cell division, stress responses and other essential functions.