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| Lưỡng sắc tròn× | SAXS× | |
|---|---|---|
| Lĩnh vực | Quang phổ học | Quang phổ học |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1969 | 1954 |
| Người khởi xướng≠ | Jean-Claude Fasman | Otto Kratky |
| Loại≠ | Spectroscopic method | Synchrotron/X-ray technique |
| Công trình gốc≠ | Greenfield, N. J., & Fasman, G. D. (1969). Computed circular dichroism spectra for protein secondary structures. Biochemistry, 8(10), 4108-4116. DOI ↗ | Glatter, O., & Kratky, O. (1982). Small Angle X-ray Scattering. Academic Press. link ↗ |
| Tên gọi khác≠ | CD spectroscopy, circular dichroism, CD analysis | SAXS, small-angle scattering |
| Liên quan | 3 | 3 |
| Tóm tắt≠ | Circular Dichroism (CD) spectroscopy measures the differential absorption of left- and right-circularly polarized light by optically active molecules, particularly proteins and nucleic acids. Introduced by Greenfield and Fasman in 1969, CD is a rapid, non-destructive technique for characterizing secondary structure (alpha-helix, beta-sheet), monitoring protein folding transitions, and assessing conformational changes in response to pH, temperature, or ligand binding. | Small-Angle X-ray Scattering (SAXS) is a solution-phase X-ray scattering technique that measures the overall shape and size of macromolecules and nanoparticles by analyzing scattering intensity at low angles (0.1-10 degrees). Developed by Kratky and colleagues in the 1950s, SAXS provides information about molecular radius, aggregation state, and overall shape without requiring crystallization or fixing, making it ideal for studying native protein conformations and dynamics. |
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