Bacillus subtilis σ A and Escherichia coli σ 70 lacking σ region 1.1 are not released during transcription initiation and elongation - Aniruddha Tewary; Shreya Sengupta; Soumya Mukherjee; Nilanjana Hazra; Yon W. Ebright; Richard H. Ebright; Jayanta Mukhopadhyay (Proceedings of the National Academy of Sciences, 2025)