The PRC-barrel: a widespread conserved domain shared by photosynthetic reaction center subunits and proteins of RNA metabolism

摘要

BackgroundThe H subunit of the purple bacterial photosynthetic reaction center (PRC-H) is important for the assembly of the photosynthetic reaction center and appears to regulate electron transfer during the reduction of the secondary quinone. It contains a distinct cytoplasmic β-barrel domain whose fold has no close structural relationship to any other well known β-barrel domain.