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Christa Kietz on Muck Rack

Christa Kietz

As seen in: BioRxiv
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Articles

Evolutionarily conserved temperature dependency leads to loss of protein O-GlcNAc in mammalian hypothermia

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By Divya Upadhyay, Christa Kietz, Nasrin Sultana Verified, Rishi Raj Banerjee
| BioRxiv
Abstract O-N-acetylglucosaminylation (O-GlcNAcylation) is a conserved, non-canonical glycosylation of intracellular proteins suggested to regulate a wide spectrum of fundamental cell processes and stress responses. O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA) add and remove, respectively, O-GlcNAc on protein serines and threonines. O-GlcNAcylation is thought to be primarily regulated by the availability of its substrate, UDP-GlcNAc, produced by the hexosamine biosynthetic pathway (HBP).
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Hepatic mitochondrial respiration is crucial for euthermia in complex III-deficient mice with impaired brown adipose tissue thermogenesis

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By Rishi Raj Banerjee, Divya Upadhyay, Tomáš Zárybnický, Christa Kietz
| BioRxiv
Abstract Liver is the key hub of systemic energy metabolism and growth regulation, yet its roles in mitochondrial disease pathophysiology remain relatively understudied. Bcs1lp.S78G knock-in mice, carrying a patient mutation causing respiratory complex III (CIII)-deficiency, present juvenile-onset liver and kidney disease, growth restriction, lipodystrophy, and early death.
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