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The region between the cytoplasmic membrane and the outer cell membrane in gram-negative bacteria and some archaea.

per′i·plas′mic adj.


(Biology) biology the region between the outer wall and the inner cytoplasmic membrane of a biological (esp bacterial) cell
References in periodicals archive ?
Analyses showed that 9 proteins have potential to be localized in cytoplasm, 7 in outer membrane, 4 in inner membrane and 1 will be in periplasm (Fig.
Between the two membranes is a space containing a cell wall called the periplasm.
In the bacterial peptidoglycan biosynthetic pathway, GlcNAc-MurNAc-pentapeptide monomer units synthesized in the cytoplasm are transferred to the periplasm and cross-linked to pre-existing peptidoglycans by penicillin-binding proteins (PBPs).
Several secretory systems involved in protein translocation from the cytoplasm to periplasm or external milieu were identified in this genome as in other enterics.
Can artificial metalloenzymes become as catalytically efficient as naturally-evolved metalloenzymes, even in complex biological mixtures Herein, we outline our efforts to address this challenge by localizing and evolving AMs within the periplasm of Escherichia coli.
The antimicrobial impact of cinnamaldehyde (a non-phenolic phenylpropene and main active compound of cinnamon) in suggested to arise through its carbonyl group interaction with proteins in the periplasm and inactivation microbial enzymes (Burt, 2004).
They saw that the mechanism consists of two separate complexes, one in the outer membrane of the cell, and the other in the inner membrane, which are connected by a stalk-like structure that crosses the periplasm - the space between the two membranes.
The Sec pathway transports proteins from the cytoplasm to the periplasm in an unfolded state; consequently, proteins that require a cytoplasmic environment and/or cytoplasmic components for folding, or reach their native state before they interact with the Sec proteins, are not compatible with the Sec pathway.
It penetrates the host periplasm, multiply in their cytoplasm and finally burst their cell envelopes to start once again.
The well-characterized lipoprotein Lpp from Escherichia coli is present in two different orientations within the bacterial outer membrane: either exposed to the periplasm or the bacterial surface (1).
coli (Wacher Biotech): ESETEC secretes recombinant protein products into the culture broth, which obviates isolation from the periplasm.