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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2408.04988 |
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| _version_ | 1866916350946967552 |
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| author | Xiong, Jiarui Wang, Liang Lin, Jialun Ni, Lei Zhang, Rongrong Yang, Shuai Huang, Yajia Chu, Jun Jin, Fan |
| author_facet | Xiong, Jiarui Wang, Liang Lin, Jialun Ni, Lei Zhang, Rongrong Yang, Shuai Huang, Yajia Chu, Jun Jin, Fan |
| contents | Bacterial second messengers are crucial for transmitting environmental information to cellular responses. However, quantifying their information transmission capacity remains challenging. Here, we engineer an isolated cAMP signaling channel in Pseudomonas aeruginosa using targeted gene knockouts, optogenetics, and a fluorescent cAMP probe. This design allows precise optical control and real-time monitoring of cAMP dynamics. By integrating experimental data with information theory, we reveal an optimal frequency for light-mediated cAMP signaling that maximizes information transmission, reaching about 40 bits/h. This rate correlates strongly with cAMP degradation kinetics and employs a two-state encoding scheme. Our findings suggest a mechanism for fine-tuned regulation of multiple genes through temporal encoding of second messenger signals, providing new insights into bacterial adaptation strategies. This approach offers a framework for quantifying information processing in cellular signaling systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_04988 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optimal Frequency in Second Messenger Signaling Quantifying cAMP Information Transmission in Bacteria Xiong, Jiarui Wang, Liang Lin, Jialun Ni, Lei Zhang, Rongrong Yang, Shuai Huang, Yajia Chu, Jun Jin, Fan Biological Physics Molecular Networks 92-05, 92-10 J.2.4 Bacterial second messengers are crucial for transmitting environmental information to cellular responses. However, quantifying their information transmission capacity remains challenging. Here, we engineer an isolated cAMP signaling channel in Pseudomonas aeruginosa using targeted gene knockouts, optogenetics, and a fluorescent cAMP probe. This design allows precise optical control and real-time monitoring of cAMP dynamics. By integrating experimental data with information theory, we reveal an optimal frequency for light-mediated cAMP signaling that maximizes information transmission, reaching about 40 bits/h. This rate correlates strongly with cAMP degradation kinetics and employs a two-state encoding scheme. Our findings suggest a mechanism for fine-tuned regulation of multiple genes through temporal encoding of second messenger signals, providing new insights into bacterial adaptation strategies. This approach offers a framework for quantifying information processing in cellular signaling systems. |
| title | Optimal Frequency in Second Messenger Signaling Quantifying cAMP Information Transmission in Bacteria |
| topic | Biological Physics Molecular Networks 92-05, 92-10 J.2.4 |
| url | https://arxiv.org/abs/2408.04988 |