Protonation states of Asp residues in the human Nudix hydrolase MTH1 contribute to its broad substrate recognition
Protonation states of Asp residues in the human Nudix hydrolase MTH1 contribute to its broad substrate recognition
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人 Nudix 水解酶 MTH1 中天冬氨酸残基的质子化状态有助于其广泛的底物识别
DOI:
10.1002/1873-3468.14611
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发表时间:
2023
期刊:
影响因子:
3.5
通讯作者:
Yamagata Yuriko
中科院分区:
文献类型:
--
作者:
Nakamura Teruya;Koga‐Ogawa Yukari;Fujimiya Kana;Chirifu Mami;Goto Masataka;Ikemizu Shinji;Nakabeppu Yusaku;Yamagata Yuriko
Human MutT homolog 1 (MTH1), also known as Nudix‐type motif 1 (NUDT1), hydrolyzes 8‐oxo‐dGTP and 2‐oxo‐dATP with broad substrate recognition and has attracted attention in anticancer therapeutics. Previous studies on MTH1 have proposed that the exchange of the protonation state between Asp119 and Asp120 is essential for the broad substrate recognition of MTH1. To understand the relationship between protonation states and substrate binding, we determined the crystal structures of MTH1 at pH 7.7–9.7. With increasing pH, MTH1 gradually loses its substrate‐binding ability, indicating that Asp119 is deprotonated at pH 8.0–9.1 in 8‐oxo‐dGTP recognition and Asp120 is deprotonated at pH 8.6–9.7 in 2‐oxo‐dATP recognition. These results confirm that MTH1 recognizes 8‐oxo‐dGTP and 2‐oxo‐dATP by exchanging the protonation state between Asp119 and Asp120 with higher pKa.
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影响因子:
14.9
作者:
Nakamura T;Okabe K;Hirayama S;Chirifu M;Ikemizu S;Morioka H;Nakabeppu Y;Yamagata Y
通讯作者:
Yamagata Y
DOI:
10.1073/pnas.2203118119
发表时间:
2022-05-24
影响因子:
11.1
作者:
Nakamura, Teruya;Yamagata, Yuriko
通讯作者:
Yamagata, Yuriko
DOI:
10.1073/pnas.89.22.11021
发表时间:
1992-11-15
影响因子:
11.1
作者:
MO, JY;MAKI, H;SEKIGUCHI, M
通讯作者:
SEKIGUCHI, M
影响因子:
4.7
作者:
Kohno, Takashi;Sakiyama, Tokuki;Yokota, Jun
通讯作者:
Yokota, Jun
影响因子:
64.8
作者:
MAKI, H;SEKIGUCHI, M
通讯作者:
SEKIGUCHI, M