title: Structural-functional analysis of bacteriophage T7 RNA polymerase.
abstract: This review summarizes our results of the structural and functional studies of bacteriophage T7 DNA-dependent RNA polymerase (T7 RNAP). Particular features of this enzyme (the single-subunit composition, relatively low molecular weight) make it the most convenient model for investigating the physicochemical aspects of transcription. The review discusses the main properties of T7 RNAP, interaction between the enzyme and promoter, principle stages of T7-transcription, and also the results of structural and functional studies by affinity modification and both random and site-directed mutagenesis techniques.
authors.affiliation: Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia.
authors.forename: V L
authors.initials: VL
authors.lastname: Tunitskaya
authors.forename: S N
authors.initials: SN
authors.lastname: Kochetkov
mesh_terms: D000595:Amino Acid Sequence; D017123:Bacteriophage T7 / Q000201:enzymology*; D012321:DNA-Directed RNA Polymerases / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic / Q000235:genetics; D011487:Protein Conformation; D013329:Structure-Activity Relationship; D014764:Viral Proteins
chemical_list: D014764:Viral Proteins; C062210:bacteriophage T7 RNA polymerase; D012321:DNA-Directed RNA Polymerases