SF2312 is a natural phosphonate inhibitor of enolase.

SF2312 is a natural phosphonate inhibitor of enolase.
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DOI:
10.1038/nchembio.2195
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发表时间:
2016-12
影响因子:
14.8
通讯作者:
Muller FL
Muller FL
中科院分区:
生物学1区
文献类型:
--
作者:
Leonard PG;Satani N;Maxwell D;Lin YH;Hammoudi N;Peng Z;Pisaneschi F;Link TM;Lee GR 4th;Sun D;Prasad BAB;Di Francesco ME;Czako B;Asara JM;Wang YA;Bornmann W;DePinho RA;Muller FL

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尽管在大多数生命形式中对能量产生至关重要,但很少有微生物抗生素特异性抑制糖酵解。为了开发用于治疗具有烯醇化酶1缺失的癌症的糖酵解酶烯醇化酶2的特异性抑制剂,我们将合成的工具化合物抑制剂膦酰乙酰异羟肟酸酯(PhAH)建模为人ENO 2的活性位点。一个环稳定的类似物的PhAH,与异羟肟氮连接的α-碳的乙烯桥,预测增加结合亲和力,通过稳定的抑制剂在结合构象。出乎意料的是,基于结构的搜索显示,我们假设的骨架稳定的PhAH与SF 2312具有很强的相似性,SF 2312是由放线菌小单孢菌产生的未知作用模式的膦酸酯抗生素,其在厌氧条件下具有活性。在这里,我们提出了多条证据,包括一个新的X射线结构,SF 2312是一个非常有效的,低nM的烯醇化酶抑制剂。
Despite being critical for energy generation in most forms of life, few if any microbial antibiotics specifically inhibit glycolysis. To develop a specific inhibitor of the glycolytic enzyme Enolase 2 for the treatment of cancers with deletion of Enolase 1, we modeled the synthetic tool compound inhibitor, Phosphonoacetohydroxamate (PhAH) into the active site of human ENO2. A ring-stabilized analogue of PhAH, with the hydroxamic nitrogen linked to the alpha-carbon by an ethylene bridge, was predicted to increase binding affinity by stabilizing the inhibitor in a bound conformation. Unexpectedly, a structure based search revealed that our hypothesized back-bone-stabilized PhAH bears strong similarity to SF2312, a phosphonate antibiotic of unknown mode of action produced by the actinomycete Micromonospora, which is active under anaerobic conditions. Here, we present multiple lines of evidence, including a novel X-ray structure, that SF2312 is a highly potent, low nM inhibitor of Enolase.
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