10-02-06 (12) Cytoskeleton

10-02-06 (12) Cytoskeleton - The Cytoskeleton The...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
The Cytoskeleton
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The cytoskeleton A network of fibers extending throughout the cytoplasm that organizes the structures and activities of the cell Composed of three parts
Background image of page 2
Microtubule 0.25 µm Microfilaments
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Roles of the Cytoskeleton: Support, Motility, and Regulation Gives mechanical support to the cell Motility Regulation of biochemical activities
Background image of page 4
Components of the Cytoskeleton Three main types of cytoskeletal fibers Microtubules Microfilaments Intermediate Filaments
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Cytoskeletal Elements microtubule microfilament intermediate filament
Background image of page 6
Components of the Cytoskeleton Three main types of cytoskeletal fibers Each made up of subunits Subunits held together by non-covalent (weak) interactions Accessory proteins
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Accessory Proteins Motor proteins Crosslinking proteins
Background image of page 8
Microtubules Thickest of three cytoskeletal filaments Outer diameter of 25 nm Long hollow cylinders Straight and rigid Made from the protein tubulin
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Microtubules
Background image of page 10
Microtubules Made from tubulin The subunit is a tubulin heterodimer Subunits join noncovalently Each microtubule is composed of 13 protofilaments
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Microtubules
Background image of page 12
The Centrosome The centrosome is the “microtubule- organizing center” (MTOC) Microtubules grow out of centrosome Contains a pair of centrioles
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 44

10-02-06 (12) Cytoskeleton - The Cytoskeleton The...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online