4hri, resolution 2.95Å
OCA
Categories: Nostoc sp. pcc 7120 | Chen, Y | Hu, H X | Jiang, Y L | Zhang, C C | Zhao, M X | Zhou, C Z | Cyanobacteria | Helix-turn-helix dna-binding motif | Heterocyst differentiation | Transcription-dna complex | Transcriptional factor