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Updated: May 16, 2026
07:35
Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
Published on: June 1, 2022
Mitochondrial heme: an exit strategy at last
1Department of Pathology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA. mark.fleming@childrens.harvard.edu
The Journal of Clinical Investigation
|November 29, 2012
Summary
Researchers identified a protein, feline leukemia virus subgroup C receptor (FLVCR1), that transports heme out of mitochondria. This discovery is crucial for understanding iron absorption and red blood cell formation.
Area of Science:
- Biochemistry
- Cell Biology
- Hematology
Background:
- Heme transport across cellular membranes is essential for vital biological processes.
- The specific proteins responsible for heme transport have remained largely unidentified.
- Heme is critical for iron absorption, hemoglobin synthesis, and macrophage iron recycling.
Purpose of the Study:
- To identify the protein responsible for heme export from mitochondria.
- To elucidate the role of this protein in erythroid differentiation.
Main Methods:
- The study utilized molecular biology techniques to investigate protein function.
- Researchers focused on identifying heme export mechanisms within mitochondria.
Main Results:
- Chiabrando et al. identified an isoform of the feline leukemia virus subgroup C receptor (FLVCR1) as a heme exporter.
- FLVCR1 was shown to export heme from the mitochondria.
- This FLVCR1 isoform is critical for the process of erythroid differentiation.
Conclusions:
- The feline leukemia virus subgroup C receptor (FLVCR1) is a key mitochondrial heme exporter.
- FLVCR1 plays a critical role in erythroid differentiation, impacting red blood cell development.
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