{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T10:48:20Z","timestamp":1785840500301,"version":"3.56.0"},"reference-count":75,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T00:00:00Z","timestamp":1785801600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Curr. Issues Mol. Biol.","CIMB"],"abstract":"<jats:p>Traditional bioenergetic paradigms historically relied on classical equilibrium thermodynamics to calculate mitochondrial kinetics, often overlooking the non-equilibrium processes dictated by complex structural architecture. Recent discoveries fundamentally challenge these outdated views by demonstrating that the inner mitochondrial membrane is strictly segregated into distinct functional domains, where individual cristae operate as autonomous, ultra-confined nanocompartments, where the transport of metabolites and protons is tightly controlled by ultrastructure-assisted electric and entropic effects. Compartmentalization prevents proton dissipation, allows for the rapid generation of a localized proton motive force optimized for efficient ATP synthesis and provides robust functional redundancy against localized membrane damage. Furthermore, recognizing cristae as isolated microspaces resolves the long-standing paradox of mitochondrial nicotinamide adenine dinucleotide transhydrogenase (TH). We describe a multi-stage transport pipeline\u2014the TH\u2013isocitrate dehydrogenase axis\u2014wherein matrix-generated reducing equivalents are exported into the cytoplasm via an irreversible isocitrate\/\u03b1-ketoglutarate loop. This universal pipeline continuously supplies uncommitted NADPH for biosynthesis, systemic antioxidant defense and detoxification. We also highlight the role of compartmentalization in ATP transport and utilization processes. Consequently, disruptions to cristae compartmentalization emerge as primary pathogenic drivers in ischemic, neurodegenerative, and cardiovascular diseases.<\/jats:p>","DOI":"10.3390\/cimb48080792","type":"journal-article","created":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T09:15:22Z","timestamp":1785834922000},"page":"792","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mitochondrial Cristae as Separate Compartments: Linking Organization and Function"],"prefix":"10.3390","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8198-7780","authenticated-orcid":false,"given":"Alexander V.","family":"Panov","sequence":"first","affiliation":[{"name":"Department of Biomedical Sciences, School of Medicine, Mercer University, Macon, GA 31201, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4215-9963","authenticated-orcid":false,"given":"Semen V.","family":"Nesterov","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies, Kulakova Str. 20, 123592 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lev S.","family":"Yaguzhinsky","sequence":"additional","affiliation":[{"name":"Belozersky Research Institute for Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1016\/0022-2828(92)93381-S","article-title":"Ultrastructural Quantitation of Mitochondria and Myofilaments in Cardiac Muscle from 10 Different Animal Species Including Man","volume":"24","author":"Barth","year":"1992","journal-title":"J. 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