Bacterial microcompartment assembly: The key role of encapsulation peptides
Journal Article
·
· Communicative & Integrative Biology
- Michigan State Univ., East Lansing, MI (United States)
- Univ. of California, Berkeley, CA (United States)
- Michigan State Univ., East Lansing, MI (United States); Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Berkeley Synthetic Biology Inst., Berkeley, CA (United States)
Bacterial microcompartments (BMCs) are proteinaceous organelles used by a broad range of bacteria to segregate and optimize metabolic reactions. Their functions are diverse, and can be divided into anabolic (carboxysome) and catabolic (metabolosomes) processes, depending on their cargo enzymes. The assembly pathway for the β-carboxysome has been characterized, revealing that biogenesis proceeds from the inside out. The enzymes coalesce into a procarboxysome, followed by encapsulation in a protein shell that is recruited to the procarboxysome by a short (~17 amino acids) extension on the C-terminus of one of the encapsulated proteins. A similar extension is also found on the N- or C-termini of a subset of metabolosome core enzymes. These encapsulation peptides (EPs) are characterized by a primary structure predicted to form an amphipathic α-helix that interacts with shell proteins. In this study, we review the features, function and widespread occurrence of EPs among metabolosomes, and propose an expanded role for EPs in the assembly of diverse BMCs.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Laboratory
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- FG02-91ER20021
- OSTI ID:
- 1220568
- Alternate ID(s):
- OSTI ID: 1714351
- Journal Information:
- Communicative & Integrative Biology, Journal Name: Communicative & Integrative Biology Journal Issue: 3 Vol. 8; ISSN 1942-0889
- Country of Publication:
- United States
- Language:
- English
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