BE230_Lecture_13 - Cell Structure Function BE230 Dr...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Cell Structure & Function BE230 Dr Christine Loscher Lecture 2 Introduction to Cell Communication
Background image of page 1

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

View Full DocumentRight Arrow Icon
Chapter 17 – Cell junctions Movie
Background image of page 2
Lifetime of the chemical messenger The concentration of a molecule can be adjusted quickly only if the lifetime of the molecule is short When switch off production of the molecule its effects last only for the lifetime of the molecule Some molecules only have lifetime of several seconds- minutes
Background image of page 3

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

View Full DocumentRight Arrow Icon
Recap of general principles of cell signaling/communication Cells must have a receptor in order to respond to a messenger/molecule Each cell type has a specific set of receptors Therefore each cell type can respond to a specific set of signals and have a different cellular response Cells can respond differently to the same signal Lifetime of the signal must be short
Background image of page 4
Receptors Receptors bind messenger molecules (ligands) by noncovalent bonds – need a lot of bonds as they are weak Receptor has a binding site for the ligand so the shape fits well The ligand binding site must have appropriate
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/05/2010 for the course FSH BT taught by Professor Ianmarison during the Fall '09 term at Dublin City University.

Page1 / 13

BE230_Lecture_13 - Cell Structure Function BE230 Dr...

This preview shows document pages 1 - 6. Sign up to view the full document.

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