Для цитирования:
Манькова А. А., Брандт Н. Н., Чикишев А. Ю. Сравнительный анализ низкочастотных колебательных спектров нативных и денатурированных белков // Известия Саратовского университета. Новая серия. Серия: Физика. 2024. Т. 24, вып. 4. С. 340-347. DOI: 10.18500/1817-3020-2024-24-4-340-347, EDN: BGZOZH
Сравнительный анализ низкочастотных колебательных спектров нативных и денатурированных белков
Изменения вторичной и третичной структур белковых молекул при термической денатурации приводят к изменениям их колебательных спектров. В диапазоне «отпечатков пальцев» проявляются колебания, соответствующие элементам первичной и вторичной структуры белка, в то время как в низкочастотном (НЧ) спектральном интервале (40– 500 см−1) могут наблюдаться моды колебаний крупных фрагментов, соответствующие более высоким уровням иерархии структуры белка. Проведено сравнение колебательных спектров двух белков(коллагена и химотрипсина), имеющих различные вторичные и третичные структуры, а также спектры термически денатурированных образцов этих белков в диапазоне «отпечатков пальцев» и НЧ диапазоне. Выявлены некоторые спектральные особенности, которые могут характеризовать изменения третичной структуры белковых молекул.
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