期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1978
卷号：75
期号：11
页码：5281-5285
DOI：10.1073/pnas.75.11.5281
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：It is shown that photo-CIDNP effects (CIDNP, chemically induced dynamic nuclear polarization) can be generated in the 360-MHz proton NMR spectrum of gene-5 protein from bacteriophage M13. This technique is used to determine the number of tyrosyl residues at the surface of the protein and to assign the resonances from the 3,5-ring protons of these residues. The DNA-binding site of the protein is investigated by formation of complexes with oligonucleotides. Complex formation leads to shifting and/or quenching of the photo-CIDNP emission signals of the surface tyrosines, implying that they are involved in DNA-protein interaction. These experiments are complemented by studying the complex formation of Lys-Tyr-Lys to poly(A).
