RPO22 (DNA-directed RNA polymerase 21 kDa subunit)

FEATURES

FAMILY

poxviridae DNA-directed RNA polymerase 22 kDa subunit family

DESCRIPTION

Also known as RP22_MYXVU, RPO22, POLR21. Part of the DNA-dependent RNA polymerase which catalyzes the transcription of viral DNA into RNA using the four ribonucleoside triphosphates as substrates. Responsible for the transcription of early, intermediate and late genes. DNA-dependent RNA polymerase associates with the early transcription factor (ETF) thereby allowing the early genes transcription. Late transcription, and probably also intermediate transcription, require newly synthesized RNA polymerase (By similarity). The DNA-dependent RNA polymerase used for intermediate and late genes expression consists of eight subunits 147 kDa, 133 kDa, 35 kDa, 30 kDa, 22 kDa, 19 kDa, 18 kDa and 7 kDa totalling more than 500 kDa in mass. The same holoenzyme, with the addition of the transcription-specificity factor RAP94, is used for early gene expression (By similarity).

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EXTERNAL LINKS

RPO22

DNA-directed RNA polymerase 21 kDa subunit

MOLECULAR SYNOPSIS STRUCTURAL LIGANDABILITY

RPO22

Molecular Synopsis