Term Name:	DNA-templated transcription open complex formation
Synonyms:	DNA-dependent transcriptional open complex formation, DNA-templated transcriptional open complex formation, promoter melting, transcription open complex formation at bacterial-type RNA polymerase promoter, transcriptional open complex formation at bacterial-type RNA polymerase promoter
Definition:	Any process involved in the melting of the DNA hybrid of the core promoter region within the transcriptional closed complex of an RNA polymerase preinitiation complex (PIC) to produce an open complex where the DNA duplex around the transcription initiation site is unwound to form the transcription bubble.
Ontology:	GO: Biological Process [GO:0001112]    QuickGO    AmiGO