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metal prints ion channel metal prints protein metal prints channel metal prints plasma membrane metal prints cell membrane metal prints biochemistry metal prints cytology metal prints cell biology metal prints biology metal prints afm metal prints coloured metal prints atomic force microscope metal prints biological metal prints false-coloured metal prints atomic force microscopy metal prints

photographs ion channel photos protein photos channel photos plasma membrane photos cell membrane photos biochemistry photos cytology photos cell biology photos biology photos afm photos coloured photos atomic force microscope photos biological photos false-coloured photos atomic force microscopy photos

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Plasma membrane proteins. Coloured atomic force micrograph (AFM) showing the intracellular surface of a plasma membrane. The membrane consists of a lipid bilayer with many proteins (peaks) attached to it. Some of the proteins span the whole membrane (transmembrane proteins), whilst other sit on the surface (peripheral proteins). The proteins have a number of roles. Transmembrane proteins include channels, which allow ions and molecules to passively pass through them, transporters, which use energy to carry molecules into the cell, and structural proteins. Peripheral proteins include receptors, which allow cellular recognition and enzymes, which trigger cellular biochemical processes.

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