| Autor: |
Yuki Ogawa, Brian C. Lim, Shanu George, Juan A. Oses-Prieto, Joshua M. Rasband, Yael Eshed-Eisenbach, Hamdan Hamdan, Supna Nair, Francesco Boato, Elior Peles, Alma L. Burlingame, Linda Van Aelst, Matthew N. Rasband |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Nature Communications, Vol 14, Iss 1, Pp 1-18 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2041-1723 |
| DOI: |
10.1038/s41467-023-42273-8 |
| Popis: |
Abstract Axon initial segment (AIS) cell surface proteins mediate key biological processes in neurons including action potential initiation and axo-axonic synapse formation. However, few AIS cell surface proteins have been identified. Here, we use antibody-directed proximity biotinylation to define the cell surface proteins in close proximity to the AIS cell adhesion molecule Neurofascin. To determine the distributions of the identified proteins, we use CRISPR-mediated genome editing for insertion of epitope tags in the endogenous proteins. We identify Contactin-1 (Cntn1) as an AIS cell surface protein. Cntn1 is enriched at the AIS through interactions with Neurofascin and NrCAM. We further show that Cntn1 contributes to assembly of the AIS extracellular matrix, and regulates AIS axo-axonic innervation by inhibitory basket cells in the cerebellum and inhibitory chandelier cells in the cortex. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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