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4.2.1.114
malfunction
deletion of the CNAG_02565 gene results in lysine auxotrophy. The lys4 mutant shows increased sensitivity to oxidative stress, agents that challenge cell wall/membrane integrity, and azole antifungal drugs. The phenotype is due in part to impaired mitochondrial function as a result of LYS4 deletion, which disrupts iron homeostasis in the organelle. The lys4 mutant is attenuated virulence in a mouse inhalation model of cryptococcosis. Loss of the enzyme results in organelle dysfunction due to a potential impact on Fe-S levels
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746978
4.2.1.114
physiological function
the enzyme expression is regulated by iron levels and by the iron-related transcription factors Hap3 and HapX. The enzyme is essential for lysine biosynthesis and is required for full virulence. The iron metabolism and homeostasis have a large influence on the virulence of Cryptococcus neoformans
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746978
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