The RidA subfamily of the Rid (YjgF/YER057c/UK114) superfamily of proteins is broadly distributed and found in all domains of life. RidA proteins are enamine/imine deaminases. In the organisms that have been investigated, lack of RidA results in accumulation of the reactive enamine species 2-aminoacrylate (2AA) and/or its derivative imine 2-iminopropanoate (2IP). The accumulated enamine/imine species can damage specific pyridoxal phosphate (PLP)-dependent target enzymes. The metabolic imbalance resulting from the damaged enzymes is organism specific and based on metabolic network configuration. Saccharomyces cerevisiae encodes two RidA homologs, one localized to the cytosol and one to the mitochondria. The mitochondrial RidA homolog, Mmf1p, prevents enamine/imine stress and is important for normal growth and maintenance of mitochondrial DNA. Here, we show that Mmf1p is necessary for optimal heme biosynthesis. Biochemical and/or genetic data herein support a model in which accumulation of 2AA and or 2IP, in the absence of Mmf1p, inactivates Hem1p, a mitochondrially located PLP-dependent enzyme required for heme biosynthesis.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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