کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1377428 981977 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Human serum albumin binding assay based on displacement of a non selective fluorescent inhibitor
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Human serum albumin binding assay based on displacement of a non selective fluorescent inhibitor
چکیده انگلیسی

In this paper, we describe a fluorescent antibacterial analog, 6, with utility as a competition probe to determine affinities of other antibacterial analogs for human serum albumin (HSA). Analog 6 bound to HSA with an affinity of 400 ± 100 nM and the fluorescence was environmentally sensitive. With 370 nm excitation, environmental sensitivity was indicated by a quenching of the 530 nm emission when the probe bound to HSA. Displacement of dansylsarcosine from HSA by 6 indicated it competed with compounds that bound at site II (ibuprofen binding site) on HSA. Analog 6 also shifted the NMR peaks of an HSA bound oleic acid molecule that itself was affected by compounds that bound at site II. In addition to binding at site II, 6 interacted at site I (warfarin binding site) as indicated by displacement of dansylamide and the shifting of NMR peaks of an HSA bound oleic acid molecule affected by warfarin site binding. Additional evidence for multiple site interaction was discovered when a percentage of 6 could be displaced by either ibuprofen or phenylbutazone. A competition assay was established using 6 to determine relative affinities of other antibacterial inhibitors for HSA.

This paper describes the discovery of a novel fluorescent probe 6 and its utility in measuring compounds, affinity for human serum albumin (HSA).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 17, Issue 16, 15 August 2007, Pages 4646–4649
نویسندگان
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