Uncovering kinesin dynamics in neurites with MINFLUX.
Commun Biol
; 7(1): 661, 2024 May 29.
Article
em En
| MEDLINE
| ID: mdl-38811803
ABSTRACT
Neurons grow neurites of several tens of micrometers in length, necessitating active transport from the cell body by motor proteins. By tracking fluorophores as minimally invasive labels, MINFLUX is able to quantify the motion of those proteins with nanometer/millisecond resolution. Here we study the substeps of a truncated kinesin-1 mutant in primary rat hippocampal neurons, which have so far been mainly observed on polymerized microtubules deposited onto glass coverslips. A gentle fixation protocol largely maintains the structure and surface modifications of the microtubules in the cell. By analyzing the time between the substeps, we identify the ATP-binding state of kinesin-1 and observe the associated rotation of the kinesin-1 head in neurites. We also observed kinesin-1 switching microtubules mid-walk, highlighting the potential of MINFLUX to study the details of active cellular transport.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neuritos
/
Cinesinas
/
Hipocampo
/
Microtúbulos
Limite:
Animals
Idioma:
En
Revista:
Commun Biol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Alemanha