Protonated Asparaginyl-Alanine Decomposition: a TCID, SORI-CID, and Computational Analysis
Protonated Asparaginyl-Alanine Decomposition: a TCID, SORI-CID, and Computational Analysis
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质子化天冬酰胺酰丙氨酸分解:TCID、SORI-CID 和计算分析
DOI:
10.1007/s13361-018-2052-5
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发表时间:
2018
影响因子:
3.2
通讯作者:
Armentrout, P. B.
中科院分区:
文献类型:
--
作者:
Boles, Georgia C.;Wu, R. R.;Rodgers, M. T.;Armentrout, P. B.
Deamidation of asparagine residues, one of the fastest known post-translational modifications in proteins, plays a significant role in various biological functions and degenerative, aging diseases. Here, we present a full description of deamidation (as well as other key dissociation processes) from protonated asparaginyl-alanine, H+(AsnAla), by studying its kinetic energy-dependent threshold collision-induced dissociation (TCID) with Xe using a guided ion beam tandem mass spectrometer. Relative thresholds compare favorably with those acquired by sustained off-resonance irradiation-CID of H+(AsnAla) with Ar in a Fourier transform ion cyclotron resonance mass spectrometer. Absolute threshold energies from the TCID studies are compared to relative single point energies of major reaction species calculated at the B3LYP, B3LYP-GD3BJ, B3P86, MP2(full), and M06-2X levels of theory. Relative energies of key TSs and products allow for the characterization of the important rate-limiting steps involved in H+(AsnAla) decomposition. The influence of water solvation on key TSs is also explored computationally, where bridging the gap between gas-phase and solvated studies is an important aspect of the biological relevance of this analysis. The comprehensive results presented (in addition to complementary studies discussed herein) allow for an insightful comparison to previous deamidation studies such that effects of the C-terminal residue side chain can be elucidated.
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DOI:
10.1016/s1044-0305(02)00347-1
发表时间:
2002-05-01
影响因子:
3.2
作者:
Armentrout, PB
通讯作者:
Armentrout, PB
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
F. Muntean;Lars V. Heumann;P. Armentrout
通讯作者:
P. Armentrout
DOI:
10.1016/s0021-9258(18)54607-x
发表时间:
1991-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Tyler-Cross;Verne SchirchS
通讯作者:
R. Tyler-Cross;Verne SchirchS
DOI:
10.1021/acs.jpca.7b12348
发表时间:
2018-03-08
期刊:
The journal of physical chemistry. A
影响因子:
--
作者:
Kempkes LJM;Boles GC;Martens J;Berden G;Armentrout PB;Oomens J
通讯作者:
Oomens J
影响因子:
1.1
作者:
Fadda E;Woods RJ
通讯作者:
Woods RJ