首页> 外文期刊>Acta Crystallographica, Section B. Structural science, crystal engineering and materials >Revisiting the structure of a synthetic somatostatin analogue for peptide drug design
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Revisiting the structure of a synthetic somatostatin analogue for peptide drug design

机译:重新审视肽药物设计的合成生长抑素类似物的结构

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Natural or artificially manufactured peptides attract scientific interest worldwide owing to their wide array of pharmaceutical and biological activities. X-ray structural studies are used to provide a precise extraction of information, which can be used to enable a better understanding of the function and physicochemical characteristics of peptides. Although it is vulnerable to disassociation, one of the most vital human peptide hormones, somatostatin, plays a regulatory role in the endocrine system as well as in the release of numerous secondary hormones. This study reports the successful crystallization and complete structural model of octreotide, a stable octapeptide analogue of somatostatin. Common obstacles in crystallographic studies arising from the intrinsic difficulties of obtaining a suitable single-crystal specimen were efficiently overcome as polycrystalline material was employed for synchrotron and laboratory X-ray powder diffraction (XPD) measurements. Data collection and preliminary analysis led to the identification of unit-cell symmetry [orthorhombic, P2_12_12_1, a = 18.5453 (15), b = 30.1766 (25), c = 39.798 (4) ? ], a process which was later followed by complete structure characterization and refinement, underlying the efficacy of the suggested (XPD) approach.
机译:由于他们广泛的药物和生物学活动,自然或人工制造的肽在全世界吸引科学兴趣。 X射线结构研究用于提供精确提取信息,可用于更好地理解肽的功能和物理化学特征。虽然它易受脱离的歧视,但是生长抑制素最重要的人肽激素之一,在内分泌系统中发挥调节作用,以及释放许多次生激素。本研究报告了八氢肽稳定的八肽类似物的成功结晶和完全结构模型,是生长抑制菌素的稳定八肽类似物。从获得合适的单晶标本获得的内在困难产生的晶体研究中的常见障碍被有效地克服,因为使用用于同步rotron和实验室X射线粉末衍射(XPD)测量的多晶材料。数据收集和初步分析导致单单元对称的识别[正交,P2_12_12_1,A = 18.5453(15),B = 30.1766(25),C = 39.798(4)? [后面的过程,后面是完全结构表征和改进,潜在的建议(XPD)方法的功效。

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