Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Attachment of Sister Chromatids02:57

Attachment of Sister Chromatids

As cells progress into mitosis, the nuclear envelope breaks down, and the condensed chromosomes are exposed to the array of bipolar microtubules of the mitotic spindle. The kinetochore, a large, disc-shaped protein complex, is present at the centromere region of the sister chromatids and acts as a binding site for the microtubules.  Usually, the plus-end of a single microtubule is embedded within the kinetochore. However, some kinetochores first establish lateral contact with the side-wall of a...
Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
Microtubule Formation01:23

Microtubule Formation

Microtubules are dynamic structures that undergo continuous assembly and disassembly. They originate from specialized multi-protein complexes known as microtubule organizing centers or MTOCs. Within the MTOC, the point of origin of the microtubule is known as the minus end, while the end radiating outward is the plus end. Microtubules serve two primary functions — the organization of spindle complexes to separate sister chromatids during mitotic or meiotic cell division and the formation of...
Adaptability of Cytoskeletal Filaments01:12

Adaptability of Cytoskeletal Filaments

The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments in the cytoskeleton determines their ability to perform various functions within the cell. It can undergo rapid reorganization during processes like cell division or remain stable for several hours as in the interphase. The adaptability of these filaments depends on stringent regulatory mechanisms. The microfilament and microtubules of the...
Microtubule Instability02:17

Microtubule Instability

Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated assembly and...
Microtubule Instability02:17

Microtubule Instability

Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated assembly and...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Microtubules guide Aurora B substrate geometries for accurate chromosome segregation.

Science advances·2026
Same author

Confinement in fibrous environments positions and orients mitotic spindles.

PNAS nexus·2025
Same author

Inhibition of p38-MK2 pathway enhances the efficacy of microtubule inhibitors in breast cancer cells.

bioRxiv : the preprint server for biology·2024
Same author

Confinement in fibrous environments positions and orients mitotic spindles.

bioRxiv : the preprint server for biology·2024
Same author

Single molecule imaging of the central dogma reveals myosin-2A gene expression is regulated by contextual translational buffering.

bioRxiv : the preprint server for biology·2024
Same author

Translation Dynamics of Single mRNAs in Live Cells.

Annual review of biophysics·2023

Related Experiment Video

Updated: Jun 3, 2026

Directly Measuring Forces Within Reconstituted Active Microtubule Bundles
07:47

Directly Measuring Forces Within Reconstituted Active Microtubule Bundles

Published on: May 10, 2022

FORMIN stable kinetochore-microtubule attachments.

O'Neil Wiggan1, Jennifer G DeLuca

  • 1Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80525, USA.

Developmental Cell
|March 15, 2011
PubMed
Summary
This summary is machine-generated.

Formin proteins like mDia3 stabilize microtubules and are regulated by Aurora B Kinase. This interaction is crucial for forming kinetochore-microtubule attachments during cell division.

More Related Videos

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins
05:35

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins

Published on: March 3, 2016

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
12:26

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

Published on: May 3, 2018

Related Experiment Videos

Last Updated: Jun 3, 2026

Directly Measuring Forces Within Reconstituted Active Microtubule Bundles
07:47

Directly Measuring Forces Within Reconstituted Active Microtubule Bundles

Published on: May 10, 2022

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins
05:35

Immunofluorescence Analysis of Endogenous and Exogenous Centromere-kinetochore Proteins

Published on: March 3, 2016

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
12:26

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

Published on: May 3, 2018

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Formins are primarily known for their role in actin filament assembly.
  • A less-explored function of formins involves the stabilization of microtubules.
  • The specific roles of formins in mitosis and their regulation are areas of ongoing research.

Discussion:

  • Cheng et al. (2011) reveal a novel regulatory mechanism for the formin mDia3.
  • Aurora B Kinase directly influences the activity of mDia3.
  • This regulation is essential for the proper formation of kinetochore-microtubule attachments.

Key Insights:

  • The formin mDia3 is a key player in microtubule dynamics during mitosis.
  • Aurora B Kinase acts as a regulator of mDia3, impacting its function.
  • mDia3's interaction with Aurora B Kinase is critical for establishing robust kinetochore-microtubule attachments, ensuring accurate chromosome segregation.

Outlook:

  • Further investigation into the precise molecular interactions between mDia3, Aurora B Kinase, and microtubules.
  • Exploring the broader implications of formin regulation by kinases in other cellular processes.
  • Understanding how dysregulation of this pathway may contribute to diseases like cancer.