β-Lysine discrimination by lysyl-tRNA synthetase.
β-Lysine discrimination by lysyl-tRNA synthetase.
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赖氨酸-TRNA合成酶歧视β-赖氨酸。
DOI:
10.1016/j.febslet.2011.09.008
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发表时间:
2011-10-20
期刊:
影响因子:
3.5
通讯作者:
Ibba M
中科院分区:
文献类型:
--
作者:
Gilreath MS;Roy H;Bullwinkle TJ;Katz A;Navarre WW;Ibba M
Elongation factor P is modified with (R)- -lysine by the lysyl-tRNA synthetase (LysRS) paralog PoxA. PoxA specificity is orthogonal to LysRS, despite their high similarity. To investigate - and -lysine recognition by LysRS and PoxA, amino acid replacements were made in the LysRS active site guided by the PoxA structure. A233S LysRS behaved as wild type with -lysine, while the G469A and A233S/G469A variants decreased stable -lysyl-adenylate formation. A233S LysRS recognized -lysine better than wildtype, suggesting a role for this residue in discriminating - and -amino acids. Both enantiomers of -lysine were substrates for tRNA aminoacylation by LysRS, which, together with the relaxed specificity of the A233S variant, suggest a possible means to develop systems for in vivo co-translational insertion of -amino acids.
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影响因子:
16
作者:
Ling, Jiqiang;So, Byung Ran;Ibba, Michael
通讯作者:
Ibba, Michael
DOI:
10.1073/pnas.0509219103
发表时间:
2006-03-21
影响因子:
11.1
作者:
Hartman, MCT;Josephson, K;Szostak, JW
通讯作者:
Szostak, JW
影响因子:
13.8
作者:
Schimmel, P;De Pouplana, LR
通讯作者:
De Pouplana, LR
影响因子:
14.8
作者:
Vetting, Matthew W.;Hegde, Subray S.;Blanchard, John S.
通讯作者:
Blanchard, John S.
影响因子:
5.2
作者:
Zou, S. Betty;Roy, Herve;Navarre, William Wiley
通讯作者:
Navarre, William Wiley