pfam04566: RNA_pol_Rpb2_4 (this model, PSSM-Id:398322 is obsolete and has been replaced by 428012)
RNA polymerase Rpb2, domain 4
RNA polymerases catalyze the DNA dependent polymerization of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 4, is also known as the external 2 domain.
Jiyao W et al.(2023). "The conserved domain database in 2023.",