Functional Amyloids As Natural Storage of Peptide Hormones in Pituitary Secretory Granules

Author:

Maji Samir K.1,Perrin Marilyn H.2,Sawaya Michael R.3,Jessberger Sebastian4,Vadodaria Krishna4,Rissman Robert A.5,Singru Praful S.6,Nilsson K. Peter R.7,Simon Rozalyn7,Schubert David8,Eisenberg David3,Rivier Jean2,Sawchenko Paul2,Vale Wylie2,Riek Roland19

Affiliation:

1. Laboratory of Physical Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Wolfgang-Paulistrasse 10, CH-8093 Zürich, Switzerland.

2. Clayton Foundation Laboratories for Peptide Biology, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

3. Howard Hughes Medical Institute, UCLA-DOE Institute for Genomics and Proteomics, Box 951570, University of California, Los Angeles, CA 90095, USA.

4. Institute of Cell Biology, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland.

5. Department of Neuroscience, University of California, San Diego, La Jolla, CA 92093, USA.

6. Division of Endocrinology, Diabetes and Metabolism, Tufts Medical Center, Boston, MA 02111, USA.

7. Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden.

8. Cellular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

9. Structural Biology, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

Abstract

Plethora of Secretory Amyloids Protein aggregation and the formation of amyloids are associated with several dozen pathological conditions in humans, including Alzheimer's disease, Parkinson's disease, and type II diabetes. In addition, a few functional amyloid systems are known: the prions of fungi, the bacterial protein curli, the protein of chorion of the eggshell of silkworm, and the amyloid protein Pmel-17 involved in mammalian skin pigmentation. Now Maji et al. (p. 328 , published online 18 June) propose that endocrine hormone peptides and proteins are stored in an amyloid-like state in secretory granules. Thus, the amyloid fold may represent a fundamental, ancient, and evolutionarily conserved protein structural motif that is capable of performing a wide variety of functions contributing to normal cell and tissue physiology.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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