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Nitric oxide, invertebrates and hemoglobin

机译:一氧化氮,无脊椎动物和血红蛋白

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Rich redox chemistry of the diatomic NO gives this molecule the functional flexibility to interact with both metal and non-metal components of biological molecules. This important biological signaling and allosteric control has become evident in such varied applications as brainervous system function; immune response; growth and development; behavior; and gas transport. Many of the basic discoveries linking NO to biological systems have arisen from structure-function relationships in hemoglobin. For example, by analogy with hemoglobin, Lou Ignarro, in a now-classic paper on NO, proposed that the activation of soluble guanylate cyclase occurs via a NO-driven planar shift in the enzyme's home iron (Ignarro et al., 1984). Many other proteins involved in NO biology are heme proteins where NO coordination plays an essential function. In this regard, we may view hemoglobin as a microcosm of NO biology.
机译:双原子NO的丰富氧化还原化学性质使该分子具有与生物分子的金属和非金属成分相互作用的功能灵活性。这种重要的生物信号和变构控制在诸如脑/神经系统功能的各种应用中变得很明显。免疫反应;增长与发展;行为;和天然气运输。将NO与生物系统联系起来的许多基本发现都来自血红蛋白的结构-功能关系。例如,类似于血红蛋白,Lou Ignarro在现在关于NO的经典论文中提出,可溶性鸟苷酸环化酶的激活是通过NO驱动的酶的家铁水平迁移而发生的(Ignarro等,1984)。 NO生物学中涉及的许多其他蛋白是血红素蛋白,其中NO配位起着必不可少的功能。在这方面,我们可能将血红蛋白视为NO生物学的缩影。

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