MAM: more than just a housekeeper
Open accessAbstract
The physical association between the endoplasmic reticulum (ER) and mitochondria, which is known as the mitochondria-associated ER membrane (MAM), has important roles in various cellular 'housekeeping' functions including the non-vesicular transports of phospholipids. It has recently become clear that the MAM also enables highly efficient transmission of Ca(2+) from the ER to mitochondria to stimulate oxidative metabolism and, conversely, might enable the metabolically energized mitochondria to regulate the ER Ca(2+) homeostasis. Recent studies have shed light on molecular chaperones such as calnexin, calreticulin, ERp44, ERp57, grp75 and the sigma-1 receptor at the MAM, which regulate the association between the two organelles. The MAM thus integrates signal transduction with metabolic pathways to regulate the communication and functional interactions between the ER and mitochondrion.
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Direct interactions between mitochondria and the endoplasmic reticulum, particularly at mitochondria-ER-associated membranes, allow direct calcium exchange between the organelles and facilitate lipid synthesis, exchange, and metabolism.
“direct interactions between mitochondria and the endoplasmic reticulum (ER), particularly at mitochondria–ER-associated membranes (MAM), allow direct calcium exchange between the organelles and facilitate lipid synthesis, exchange, and metabolism [45, 46]”
From Neuronal Apolipoprotein E4 Expression Results in Proteome-Wide Alterations and Compromises Bioenergetic Capacity by Disrupting Mitochondrial Function (2019) · cites this paper as [46]
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Hayashi, T., & Su, T.-P. (2003) · The Journal of Pharmacology and Experimental Therapeutics · doi:10.1124/jpet.103.051284 · Cited by 262 · see citing works
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- Authors
- Hayashi, T., Rizzuto, R., Hajnoczky, G., & Su, T.-P.
- Affiliations
- National Institutes of Health (US)
- University of Ferrara (IT)
- Corresponding author
- Su, Tsung-Ping
- Venue
- Trends in Cell Biology
- Publisher
- Elsevier BV
- Published
- 2009-02
- Volume
- 19
- Issue
- 2
- Pages
- 81-88
- ISSN
- 0962-8924 (ISSN-L)
- PMC
- PMC2750097
- OpenAlex
- W2082315075
- Cited by
- 787
- References
- 1
- Citations by year
- 2026: 19 · 2025: 34 · 2024: 32 · 2023: 41 · 2022: 44 · 2021: 42 · 2020: 56 · 2019: 47 · 2018: 39 · 2017: 39 · 2016: 52 · 2015: 45 · 2014: 52 · 2013: 66 · 2012: 58
- FWCI
- 4.69
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Trends in Cell Biology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Padua Research Archive (University of Padova) (submittedVersion)
- Funders
- National Institutes of Health
- National Institute on Aging (P01AG025532)
- National Institute of Diabetes and Digestive and Kidney Diseases (R01DK051526)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
- Keywords
- mitochondria-associated ER membranes, endoplasmic reticulum, mitochondria, calcium signaling, ER-mitochondria communication, calcium homeostasis, oxidative metabolism, phospholipid transport, molecular chaperones, calnexin, calreticulin, ERp44, ERp57, GRP75, sigma-1 receptor
- MeSH terms
- Animals, Calcium, Endoplasmic Reticulum, Humans, Lipids, Mitochondria, Molecular Chaperones, Calcium Signaling, Membrane Transport Proteins
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