摘要
Electrophoresis, chromatography, immunoassay, sequencing and other time consuming ap-proaches have been developed to determine DNA base mismatching, oxidative lesion or strand breaks. Sometimes,however, only qualitative information is enough to decide whether mutation has happened to DNA and its extent.Convolution spectrometry (CS), a new technique to discover ultrafme difference on ultraviolet (UV) absorption ofdifferent substances, is originally employed to find out any subtle mutation of DNA induced by UV radiation. Muta-tive DNA is compared with ego criteria based on the spectra of the former DNA, any difference is quantitatively ex-pressed by dispersion (5). Visible changes cannot be observed on second -derivative spectra until the mutation gets 5up to 11.48%. Dimethyl sulfoxide is an intensifier of UV 254 nm induced DNA mutation and protector at 365 nm,which is simply confirmed by increasing and decreasing 5. Every convolution procedure takes less than 1 min. Convolution spectrometry provides a fast, simple, sensitive and inexpensive alternative to determine DNA mutation, andto screen anti-mutational medicines.
