Structure of pteridine reductase (PTR1) from Leishmania tarentolae.

Structure of pteridine reductase (PTR1) from Leishmania tarentolae.
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来自利什曼原虫的蝶啶还原酶 (PTR1) 的结构。

DOI:
10.1107/s0907444903013131
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发表时间:
2003
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
通讯作者:
Varughese,KottayilI
Varughese,KottayilI
中科院分区:
--
文献类型:
--
作者:
Zhao,Haiyan;Bray,Tom;Ouellette,Marc;Zhao,Ming;Ferre,RoseAnn;Matthews,David;Whiteley,JohnM;Varughese,KottayilI

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原虫寄生虫利什曼原虫利用蝶啶还原酶,蝶啶还原酶(PTR1),绕过抗叶酸剂抑制。在2.8 μ m分辨率下,已将来自L.tarentolae的PTR1的晶体结构解析为与NADPH的二元复合物。 用最近报道的L.主要PTR1结构作为搜索模型。将现有结构与L.主要PTR1使我们能够识别分子中的柔性区域。PTR1是不断增长的短链淀粉酶(SDR)家族的成员,其在活性位点附近共享特征性Tyr(Xaa)3Lys基序。功能酶是一个四聚体,晶体学不对称单元包含一个具有222点群对称性的四聚体。
The protozoan parasites Leishmania utilize a pteridine-reducing enzyme, pteridine reductase (PTR1), to bypass antifolate inhibition. The crystal structure of PTR1 from L. tarentolae has been solved as a binary complex with NADPH at 2.8 Å resolution. The structure was solved by molecular-replacement techniques using the recently reported L. major PTR1 structure as a search model. Comparisons of the present structure with the L. major PTR1 allowed us to identify regions of flexibility in the molecule. PTR1 is a member of the growing family of short-chain dehydrogenases (SDR) which share the characteristic Tyr(Xaa)3Lys motif in the vicinity of the active site. The functional enzyme is a tetramer and the crystallographic asymmetric unit contains a tetramer with 222 point-group symmetry.
塔伦托利什曼原虫 H 基因座短链脱氢酶/还原酶 PTR1 减少蝶呤和叶酸。
DOI: 10.1006/abbi.1997.0126
发表时间: 1997
影响因子: 3.9
作者:
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发表时间: 1997-01-21
期刊: BIOCHEMISTRY
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通讯作者: Kraut, J
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期刊: BIOCHEMISTRY
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影响因子: 3.9
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