3zxi

Structural highlights

Disease

SYYM_HUMAN Defects in YARS2 are the cause of myopathy with lactic acidosis and sideroblastic anemia type 2 (MLASA2) [MIM:613561. MLASA2 is a rare oxidative phosphorylation disorder specific to skeletal muscle and bone marrow. Affected individuals manifest sideroblastic anemia, progressive lethargy, muscle weakness, and exercise intolerance associated with persistent lactic acidemia.^{[1] [2]}

Function

SYYM_HUMAN Catalyzes the attachment of tyrosine to tRNA(Tyr) in a two-step reaction: tyrosine is first activated by ATP to form Tyr-AMP and then transferred to the acceptor end of tRNA(Tyr) (By similarity).^[3]

See Also

• Aminoacyl tRNA synthetase 3D structures

References

1. ↑ Riley LG, Cooper S, Hickey P, Rudinger-Thirion J, McKenzie M, Compton A, Lim SC, Thorburn D, Ryan MT, Giege R, Bahlo M, Christodoulou J. Mutation of the mitochondrial tyrosyl-tRNA synthetase gene, YARS2, causes myopathy, lactic acidosis, and sideroblastic anemia--MLASA syndrome. Am J Hum Genet. 2010 Jul 9;87(1):52-9. doi: 10.1016/j.ajhg.2010.06.001. PMID:20598274 doi:10.1016/j.ajhg.2010.06.001
2. ↑ Sasarman F, Nishimura T, Thiffault I, Shoubridge EA. A novel mutation in YARS2 causes myopathy with lactic acidosis and sideroblastic anemia. Hum Mutat. 2012 Aug;33(8):1201-6. doi: 10.1002/humu.22098. Epub 2012 May 7. PMID:22504945 doi:10.1002/humu.22098
3. ↑ Bonnefond L, Fender A, Rudinger-Thirion J, Giege R, Florentz C, Sissler M. Toward the full set of human mitochondrial aminoacyl-tRNA synthetases: characterization of AspRS and TyrRS. Biochemistry. 2005 Mar 29;44(12):4805-16. PMID:15779907 doi:10.1021/bi047527z