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Cyclobutane is a cycloalkane and organic compound with the formula (CH 2) 4. Cyclobutane is a colourless gas and is commercially available as a liquefied gas. Derivatives of cyclobutane are called cyclobutanes. Cyclobutane itself is of no commercial or biological significance, but more complex derivatives are important in biology and ...
Cyclobutane dimer (CPD) (left), 6,4-dimer (6-4PP) (right) Pyrimidine dimers encompass several types, each with distinct structures and implications for DNA integrity. [citation needed] Cyclobutane pyrimidine dimer (CPD) is a dimer which features a four-membered ring formed by the fusion of two double-bonded carbons from adjacent pyrimidines.
Photolyases have a high affinity for these lesions and reversibly bind and convert them back to the original bases. The photolyase-catalyzed DNA repair process by which cyclobutane pyrimidine dimers are resolved has been studied by time-resolved crystallography and computational analysis to allow atomic visualization of the process. [8]
Ball-and-stick model of cyclobutane In organic chemistry , the cycloalkanes (also called naphthenes , but distinct from naphthalene ) are the monocyclic saturated hydrocarbons . [ 1 ] In other words, a cycloalkane consists only of hydrogen and carbon atoms arranged in a structure containing a single ring (possibly with side chains ), and all of ...
Carboplatin, sold under the brand name Paraplatin among others, is a chemotherapy medication used to treat a number of forms of cancer. [3] This includes ovarian cancer, lung cancer, head and neck cancer, brain cancer, and neuroblastoma. [3] It is used by injection into a vein. [3] Side effects generally occur. [3]
Dicycloplatin is a chemotherapy medication used to treat a number of cancers which includes the non-small-cell lung carcinoma and prostate cancer. [1]Some side effects which are observed from the treatment by dicycloplatin are nausea, vomiting, thrombocytopenia, neutropenia, anemia, fatigue, loss of appetite, liver enzyme elevation and alopecia.
Relapse for a heroin addict is no mere setback. It can be deadly. A sober addict leaves a treatment program with the physical cravings still strong but his tolerance gone. Shooting the same amount of heroin the addict was used to before treatment can more easily lead to a fatal overdose.
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