2-Oxoglutarate regulates binding of hydroxylated hypoxia-inducible factor to prolyl hydroxylase domain 2.

2-Oxoglutarate regulates binding of hydroxylated hypoxia-inducible factor to prolyl hydroxylase domain 2.
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DOI:
10.1039/c8cc00387d
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发表时间:
2018-03-28
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
通讯作者:
Schofield CJ
Schofield CJ
中科院分区:
其他
文献类型:
--
作者:
Abboud MI;McAllister TE;Leung IKH;Chowdhury R;Jorgensen C;Domene C;Mecinović J;Lippl K;Hancock RL;Hopkinson RJ;Kawamura A;Claridge TDW;Schofield CJ

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脯氨酰羟基化HIF-α与PHD 2的结合受到先前2 OG结合的阻碍;可能导致在限制性2 OG条件下抑制HIF-α降解。缺氧诱导因子(HIF)-α的脯氨酰羟化作用由Fe(ii)/2-酮戊二酸(2 OG)依赖性脯氨酰羟化酶结构域(PHD)酶催化,在动物中具有缺氧感应作用。我们报道脯氨酰-羟基化HIF-α与PHD 2的结合受到先前2 OG结合的150倍阻碍;因此,当2 OG受限时,HIF-α降解可能被PHD 2结合抑制。
The binding of prolyl-hydroxylated HIF-α to PHD2 is hindered by prior 2OG binding; likely, leading to the inhibition of HIF-α degradation under limiting 2OG conditions. Prolyl hydroxylation of hypoxia inducible factor (HIF)-α, as catalysed by the Fe(ii)/2-oxoglutarate (2OG)-dependent prolyl hydroxylase domain (PHD) enzymes, has a hypoxia sensing role in animals. We report that binding of prolyl-hydroxylated HIF-α to PHD2 is ∼50 fold hindered by prior 2OG binding; thus, when 2OG is limiting, HIF-α degradation might be inhibited by PHD binding.
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