[Structure and function of DNA--membrane contact in cells].

A model of DNA-membrane contact based on the postulate about the determining role of membrane RNA (mbRNA) in providing its specifitity, stability and functional activity is proposed. Proceeding from the DNA-membrane contact structure, unity and interconditionality of reduplication and transcription processes are shown, and basic peculiarities of reduplication are discussed. It follows from the analysis of lysozyme-detergent treatment that two different DNA-membrane complex preparations can be obtained: one of these upon the spheroplast - "turned inside out spheroplast" transition, the other, containing specific DNA-membrane contact only - in the course of further detergent treatment. The parameters of the spheroplast - "turned inside out spheroplast" transition can be used to characterize the native DNA-membrane complex. It is concluded that RNA that stabilizes and makes the compact form of bacterial nucletide (f-DNA) is none other than the postulated mbRNA of the cellular DNA-membrane contact.