Intracellular protein trafficking defects in human disease.
Secretory proteins and integral membrane proteins travel through the secretory pathway to a variety of destinations. Their targets are often specified by signals in the amino acid sequence or signals added post-translationally. The KDEL sequence that retains soluble proteins in the endoplasmic reticulum and the mannose 6-phosphate group of lysosomal enzymes are well-characterized examples of targeting signals; other signals are less well understood. Given the complexity and importance of the intracellular trafficking pathways, it is perhaps not surprising that mutations that affect the trafficking of proteins are associated with some human genetic diseases.[1]References
- Intracellular protein trafficking defects in human disease. Amara, J.F., Cheng, S.H., Smith, A.E. Trends Cell Biol. (1992) [Pubmed]
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