part of transcription initiation at RNA polymerase III promoter transcription preinitiation complex assembly RNA polymerase III preinitiation complex assembly https://github.com/geneontology/go-ontology/issues/25954 2010-08-19T04:16:04Z RNA polymerase III transcription PIC biosynthesis biological_process RNA polymerase III hybrid type promoter transcriptional preinitiation complex assembly RNA polymerase III transcription PIC formation RNA polymerase III transcriptional preinitiation complex assembly GO:0070898 RNA polymerase III type 2 promoter transcriptional preinitiation complex assembly RNA polymerase III type 1 promoter transcriptional preinitiation complex assembly GO:0000999 mah RNA polymerase III type 3 promoter transcriptional preinitiation complex assembly The formation of a large multiprotein-DNA complex that self-assembles on a tRNA gene through the sequential recruitment of the general initiation factors that compose the preinitiation complex (PIC), (which includes BDP1, BRF1, TBP, TFIIIC in human). The PIC engages RNA polymerase III on its DNA template strand and sparks polymerization of the first few RNA nucleotides. GO:0001021 GO:0001043 RNA polymerase III transcriptional preinitiation complex formation GO:0001020