Biochemical and structural characterization of Klebsiella pneumoniae oxamate amidohydrolase in the uric acid degradation pathway.
Biochemical and structural characterization of Klebsiella pneumoniae oxamate amidohydrolase in the uric acid degradation pathway.
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尿酸降解途径中肺炎克雷伯菌草酸酰胺水解酶的生化和结构特征。
DOI:
10.1107/s2059798316007099
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Ealick,StevenE
中科院分区:
文献类型:
--
作者:
Hicks,KatherineA;Ealick,StevenE
HpxW from the ubiquitous pathogen Klebsiella pneumoniae is involved in a novel uric acid degradation pathway downstream from the formation of oxalurate. Specifically, HpxW is an oxamate amidohydrolase which catalyzes the conversion of oxamate to oxalate and is a member of the Ntn-hydrolase superfamily. HpxW is autoprocessed from an inactive precursor to form a heterodimer, resulting in a 35.5 kDa α subunit and a 20 kDa β subunit. Here, the structure of HpxW is presented and the substrate complex is modeled. In addition, the steady-state kinetics of this enzyme and two active-site variants were characterized. These structural and biochemical studies provide further insight into this class of enzymes and allow a mechanism for catalysis consistent with other members of the Ntn-hydrolase superfamily to be proposed.
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DOI:
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发表时间:
2007
期刊:
Journal of Biological Chemistry 282
影响因子:
--
作者:
片井敦雄;他4名;Ryota Eakui ed. al.;Atsuo Katai ed. al.;Chiaki. Yamada;Kei Wada;Chiaki Yamada;Gina Boanca
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Gina Boanca
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2.9
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3.2
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通讯作者:
Baldoma, Laura
DOI:
--
发表时间:
--
期刊:
--
影响因子:
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作者:
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通讯作者:
T. Terwilliger;P. D. Adams;R. Read;A. Mccoy;N. Moriarty;R. Grosse-Kunstleve;P. Afonine;P. Zwart-P.-Zwa