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English: Direct DNA damage: The UV-photon is directly absorbed by the DNA (left). One of the possible reactions from the excited state is the formation of a thymine-thymine cyclobutane dimer (right). The direct DNA damage leads to sunburn and it causes an increase in melanin production. Thereby it leads to a long-lasting tan.
Note: please be aware these are not thymine bases, they are uracil (RNA equivalent) and as such are missing the 5-methyl group (cf. http://en.wikipedia.org/wiki/Thymine)
Source Own work
Author Gerriet41
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Date/TimeThumbnailDimensionsUserComment
current16:37, 14 February 2008Thumbnail for version as of 16:37, 14 February 2008976 × 663 (103 KB)Gerriet41{{Information |Description= The direct DNA damage that sometimes occurs after DNA absorbs a UVB photon |Source=self-made |Date=2008-02-14 |Author= Gerriet41 |Permission= Feel free to copy it |other_versions= }}
16:33, 14 February 2008Thumbnail for version as of 16:33, 14 February 20086,115 × 4,182 (375 KB)Gerriet41{{Information |Description= The direct DNA damage that sometimes occurs after DNA absorbs a UVB photon |Source=self-made |Date=2008-02-14 |Author= Gerriet41 |Permission= Feel free to copy it |other_versions= }}
16:29, 14 February 2008Thumbnail for version as of 16:29, 14 February 20086,115 × 4,182 (375 KB)Gerriet41{{Information |Description= |Source=self-made |Date= |Author= Gerriet41 |Permission= |other_versions= }}

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