Deprotonation at Ring B Is an Intrinsic Property of the Bilin Chromophore in Cyanobacteriochrome RcaE.

• Tác giả: Toshihiko Eki, Tomotsumi Fujisawa, Yuu Hirose, Takanari Kamo, Risako Miyoshi, Yuji Okuda, Ryoka Seto, Masashi Unno
• Ngôn ngữ: eng
• Ký hiệu phân loại: 346.042 Kinds of interest in property
• Thông tin xuất bản: United States : The journal of physical chemistry. B , 2025
• Bộ sưu tập: NCBI
• ID: 697163

Tóm tắt

Cyanobacteriochromes (CBCRs) are phytochrome-related photosensors that utilize a linear tetrapyrrole (bilin) as a chromophore. Cyanobacteriochrome RcaE belongs to the green/red-type subfamily that photoconverts between green-absorbing (Pg) and red-absorbing (Pr) states. This subfamily shows a protochromic photocycle, leveraging a protonation state change at the B ring pyrrole nitrogen (N