ISOFORM SORTING AND THE CREATION OF INTRACELLULAR COMPARTMENTS

Author:

Gunning Peter12,Weinberger Ron12,Jeffrey Peter3,Hardeman Edna3

Affiliation:

1. The Oncology Research Unit, The New Children's Hospital, PO Box 3515, Parramatta, NSW 2124,

2. Department of Pediatrics and Child Health, University of Sydney, NSW 2006, Australia;

3. Developmental Neurobiology and *Muscle Development Units, Children's Medical Research Institute, Locked Bag 23, Wentworthville, NSW 2145, Australia

Abstract

▪ Abstract  The generation of isoforms via gene duplication and alternative splicing has been a valuable evolutionary tool for the creation of biological diversity. In addition to the formation of molecules with related but different functional characteristics, it is now apparent that isoforms can be segregated into different intracellular sites within the same cell. Sorting has been observed in a wide range of genes, including those encoding structural molecules, receptors, channels, enzymes, and signaling molecules. This results in the creation of intracellular compartments that (a) can be independently controlled and (b) have different functional properties. The sorting mechanisms are likely to operate at the level of both proteins and mRNAs. Isoform sorting may be an important consequence of the evolution of isoforms and is likely to have contributed to the diversity of functional properties within groups of isoforms.

Publisher

Annual Reviews

Subject

Cell Biology,Developmental Biology

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