The human asparaginase-like protein 1 hASRGL1 is an Ntn hydrolase with beta-aspartyl peptidase activity.
The human asparaginase-like protein 1 hASRGL1 is an Ntn hydrolase with beta-aspartyl peptidase activity.
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DOI:
10.1021/bi901397h
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发表时间:
2009-11-24
期刊:
影响因子:
2.9
通讯作者:
Georgiou, George
中科院分区:
文献类型:
--
作者:
Cantor, Jason R.;Stone, Everett M.;Chantranupong, Lynne;Georgiou, George
Herein we report the bacterial expression, purification, and enzymatic characterization of the human asparaginase-like protein 1 (hASRGL1). We present evidence that hASRGL1 exhibits β-aspartyl peptidase activity consistent with enzymes designated as plant-type asparaginases, which had thus far only been found in plants and bacteria. Similar to non-mammalian plant-type asparaginases, hASRGL1 is shown to be an Ntn hydrolase for which Thr168 serves as the essential N-terminal nucleophile for intramolecular processing and catalysis, corroborated in part by abolishment of both activities through the point-mutation Thr168Ala. In light of the activity profile reported here, ASRGL1s may act synergistically with protein L-isoaspartyl methyl transferase to relieve accumulation of potentially toxic isoaspartyl peptides in mammalian brain and other tissues.
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DOI:
10.1111/j.1432-1033.2004.04254.x
发表时间:
2004-08-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
Borek, D;Michalska, K;Jaskolski, M
通讯作者:
Jaskolski, M
影响因子:
3.5
作者:
Kelo, E;Noronkoski, T;Mononen, I
通讯作者:
Mononen, I
影响因子:
5.8
作者:
Larkin, M. A.;Blackshields, G.;Higgins, D. G.
通讯作者:
Higgins, D. G.
影响因子:
14.9
作者:
Hoover, DM;Lubkowski, J
通讯作者:
Lubkowski, J
影响因子:
14.8
作者:
Kelley, Lawrence A.;Sternberg, Michael J. E.
通讯作者:
Sternberg, Michael J. E.