7f9b

Structural highlights

Function

SYEP_HUMAN Catalyzes the attachment of the cognate amino acid to the corresponding tRNA in a two-step reaction: the amino acid is first activated by ATP to form a covalent intermediate with AMP and is then transferred to the acceptor end of the cognate tRNA. Component of the GAIT (gamma interferon-activated inhibitor of translation) complex which mediates interferon-gamma-induced transcript-selective translation inhibition in inflammation processes. Upon interferon-gamma activation and subsequent phosphorylation dissociates from the multisynthetase complex and assembles into the GAIT complex which binds to stem loop-containing GAIT elements in the 3'-UTR of diverse inflammatory mRNAs (such as ceruplasmin) and suppresses their translation.^{[1] [2] [3]}

References

1. ↑ Cerini C, Kerjan P, Astier M, Gratecos D, Mirande M, Semeriva M. A component of the multisynthetase complex is a multifunctional aminoacyl-tRNA synthetase. EMBO J. 1991 Dec;10(13):4267-77. PMID:1756734
2. ↑ Sampath P, Mazumder B, Seshadri V, Gerber CA, Chavatte L, Kinter M, Ting SM, Dignam JD, Kim S, Driscoll DM, Fox PL. Noncanonical function of glutamyl-prolyl-tRNA synthetase: gene-specific silencing of translation. Cell. 2004 Oct 15;119(2):195-208. PMID:15479637 doi:http://dx.doi.org/10.1016/j.cell.2004.09.030
3. ↑ Arif A, Chatterjee P, Moodt RA, Fox PL. Heterotrimeric GAIT complex drives transcript-selective translation inhibition in murine macrophages. Mol Cell Biol. 2012 Dec;32(24):5046-55. doi: 10.1128/MCB.01168-12. Epub 2012 Oct , 15. PMID:23071094 doi:10.1128/MCB.01168-12