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Items for "selenocysteine"

Towards understanding selenocysteine incorporation into bacterial proteins

In bacteria, UGA stop codons can be recoded to direct the incorporation of selenocysteine into protein on the ribosome...

Keywords: electron cryomicroscopy, Fluorescence, protein synthesis, recoding, ribosome, selenocysteine

01/2007 | Biological Chemistry, Walter de Gruyter
Selenium in chemistry and biochemistry in comparison to sulfur

What makes selenoenzymes – seen from a chemists view – so special that they cannot be substituted by just more analogous or adapted sulfur proteins? This review compiles and compares physicochemical properties of selenium and sulfur, synthetic routes to selenocysteine (Sec) and its peptides, and comparative studies of relevant thiols and selenols and their (mixed) dichalcogens, required to understand the special role of selenium in selenoproteins on the atomic molecular level...

Keywords: disulfide/diselenide/selenenylsulfide interchange, enzyme mechanisms, selenocysteine, selenoproteins, Synthesis

01/2007 | Biological Chemistry, Walter de Gruyter