《英文msh词典》Dimer,Thymine-Cyclobutane
[入口词] Dimer,Thymine-Cyclobutane
[主题词] Pyrimidine Dimers
[英文释义] Dimers found in DNA chains damaged by ULTRAVIOLET RAYS. They consist of two adjacent PYRIMIDINE NUCLEOTIDES,usually THYMINE nucleotides,in which the pyrimidine residues are covalently joined by a cyclobutane ring. These dimers block DNA REPLICATION.