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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.15385 |
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| _version_ | 1866915253164441600 |
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| author | Mayo, Manuel Soto, Rodrigo |
| author_facet | Mayo, Manuel Soto, Rodrigo |
| contents | Chemotaxis in bacteria such as \textit{E.\ coli} is controlled by the slow methylation of chemoreceptors. As a consequence, intrinsic time and length scales of tens of seconds and hundreds of micrometers emerge, making the Keller--Segel equations invalid when the chemical signal changes on these scales, as occurs in several natural environments. Using a kinetic approach, we show that chemotaxis is described using the concentration field of the protein that controls tumbling in addition to bacterial density. The macroscopic equations for these fields are derived, which describe the nonlocal response. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15385 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bacterial chemotaxis considering memory effects (letter) Mayo, Manuel Soto, Rodrigo Soft Condensed Matter Biological Physics Chemotaxis in bacteria such as \textit{E.\ coli} is controlled by the slow methylation of chemoreceptors. As a consequence, intrinsic time and length scales of tens of seconds and hundreds of micrometers emerge, making the Keller--Segel equations invalid when the chemical signal changes on these scales, as occurs in several natural environments. Using a kinetic approach, we show that chemotaxis is described using the concentration field of the protein that controls tumbling in addition to bacterial density. The macroscopic equations for these fields are derived, which describe the nonlocal response. |
| title | Bacterial chemotaxis considering memory effects (letter) |
| topic | Soft Condensed Matter Biological Physics |
| url | https://arxiv.org/abs/2504.15385 |