According to one model the matrix proteins and lipoprotein form an interacting complex which contains diffusion pores of channels (DiRienzo et al., 1978).
Three molecules of matrix protein enclose a diffusion pore with a diameter of 1.5 to 2.0 nm. Each matrix protein molecule is stabilized 01 fixed with a lipoprotein complex consisting of three coiled-coil molecules.
Two of these lipoprotein molecules are in the free form, while the third is in the bound form and s linked to the peptidoglycan layer.
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