RPB1 — Solanum tuberosum

Summary

PGSC0003DMG400003590, symbol RPB1 on potato chromosome 2, encodes the largest subunit of RNA polymerase II, a DNA-directed RNA polymerase (EC 2.7.7.6) with DNA-directed RNA polymerase activity, and binds DNA, magnesium, zinc and other metals. The protein contains multiple RNA polymerase Rpb1 domains and the characteristic eukaryotic RNA polymerase II heptapeptide repeat. The gene is associated with mRNA transcription by RNA polymerase II, RNA 3'-end formation, DNA-dependent transcription, and also with hyphal growth, fermentation and translation elongation. The product localises to the DNA-directed RNA polymerase complex and the RNA polymerase II core complex. Related genes in other species link the RPB1 family to fruit position and fruit length.