单词	polymerase
释义	polymerase /ˈpɒlɪməreɪz / /pəˈlɪməreɪz / noun Biochemistry An enzyme which brings about the formation of a particular polymer, especially DNA or RNA: DNA polymerase... Replicative DNA polymerases are very accurate enzymes with error rates usually in the range of 10-5 per replicated nucleotide. In contrast to the phage polymerases, RNA polymerases from higher organisms have a much more complex subunit structure than the bacterial enzymes. The presence of the histones and CpG methylation most affect accessibility of the chromatin to RNA polymerases and transcription factors.
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