Pyrimidine Dimers |
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| Cyclobutane-Pyrimidine Dimers; Cytosine-Thymine Dimers; Thymine-Cyclobutane Dimer; Thymine-Thymine Cyclobutane Dimer; Cyclobutane Dimer, Thymine-Thymine; Cyclobutane Pyrimidine Dimers; Cytosine Thymine Dimers; Dimer, Thymine-Cyclobutane | |
| 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. | |