Reversed-phase ion-pair liquid chromatography of the angiotensins.

Reversed-phase ion-pair liquid chromatography of the angiotensins.
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血管紧张素的反相离子对液相色谱。

DOI:
10.1016/s0021-9673(01)89270-0
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发表时间:
1991
期刊:
Journal of chromatography
影响因子:
--
通讯作者:
Riley,CM
Riley,CM
中科院分区:
--
文献类型:
--
作者:
Patel,HB;Stobaugh,JF;Riley,CM

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本文描述了血管紧张素及其合成类似物的等密度反相液相色谱法。通过溶剂优化策略,12个多肽中有10个完全分离,总分析时间约为20 min。所研究的血管紧张素的保留行为是根据其氨基酸残基的疏水性贡献来描述的;这些多肽的预测保留率与实验保留率之间存在良好的相关性。然而,由于需要离子对色谱来获得良好的峰对称,因此酸性和碱性残基的存在大大调节了保留。在214 nm的紫外吸光度下,这些肽的检出限为3 ~ 5 pmol。通过与萘-2,3-二甲醛/氰化物进行荧光衍生反应,将含有一个初级氨基的多肽的检出限提高了两个数量级,得到了相应的n -取代1-氰苯[f]异吲哚(CBI)衍生物。考察了CBI环系对保留率的贡献。
The isocratic reversed-phase liquid chromatography of the angiotensins and a number of their synthetic analogues is described. Complete separation of 10 out of 12 peptides was achieved through a solvent optimization strategy with a total analysis time of about 20 min. The retention behavior of the angiotensins studied was described in terms of the hydrophobic contribution of their amino acid residues; there was good correlation between predicted and experimental retention for those peptides that were retained by a common mechanism. However, because ion-pair chromatography was required for good peak symmetry, retention was substantially modulated by the presence of acidic and basic residues. The limit of detection of these peptides was 3–5 pmol by UV absorbance at 214 nm. For those peptides containing a primary amino group the detection limit was improved by two orders of magnitude by fluorogenic derivatization with naphthalene-2,3-dicarboxaldehyde/cyanide to the corresponding N-substituted 1-cyanobenz[f]isoindole (CBI) derivatives. The contribution of the CBI ring system to retention was also investigated.
大脑肾素-血管紧张素系统:大脑中肽合成的模型。
DOI: --
发表时间: 1978
影响因子: 5.8
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