membrane transport

The active movement of proteins from the site of production in the cell to the site of storage or to the cell membrane for eventual release. Membrane transport requires:
(1) Translocation-competent membranes (e.g., endoplasmic reticulum, peroxisomal membrane and the mitochondrial inner membrane); and
(2) Membrane-targeting signals to direct the molecules, often in the form of an NH2-terminal oligopeptide with peroxisomal target proteins.
The transported protein or preprotein has one of two basic structures: either a completely hydrophilic primary sequence or one which is hydrophilic at both the NH2 and COOH ends, separated in the middle by an apolar hydrophobic core.

单词	membrane transport
释义	membrane transport membrane transport n (Biochemistry) the process by which physiologically important substances, such as calcium ions, sugars, etc, are conveyed across a biological membrane EncyclopediaSeemembrane membrane transport membrane transport The active movement of proteins from the site of production in the cell to the site of storage or to the cell membrane for eventual release. Membrane transport requires: (1) Translocation-competent membranes (e.g., endoplasmic reticulum, peroxisomal membrane and the mitochondrial inner membrane); and (2) Membrane-targeting signals to direct the molecules, often in the form of an NH2-terminal oligopeptide with peroxisomal target proteins. The transported protein or preprotein has one of two basic structures: either a completely hydrophilic primary sequence or one which is hydrophilic at both the NH2 and COOH ends, separated in the middle by an apolar hydrophobic core.
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