Difference between revisions of "3221652"

From CellBiology
Line 1: Line 1:
 
 
== Actin-binding Protein - Spectrin ==
 
== Actin-binding Protein - Spectrin ==
  
  
 +
Spectrin is a cytoskeleton protein that is associated with the plasma membrane.  It can be found in most vertebrate tissue and certain invertebrates.  Spectrins provide the base structural meshwork for erythrocytes and researchers have therefore used erythrocytes as a standardized model to explore the properties of this protein.
  
  
 +
===Structure===
  
===History===
 
  
 
===Function===
 
===Function===
  
 
+
The main function of spectrin is its contribution to the cytoskeleton of cells.  It gives cells support, locomotion and their overall shape.
  
 
== Homework ==
 
== Homework ==

Revision as of 23:57, 17 May 2009

Actin-binding Protein - Spectrin

Spectrin is a cytoskeleton protein that is associated with the plasma membrane. It can be found in most vertebrate tissue and certain invertebrates. Spectrins provide the base structural meshwork for erythrocytes and researchers have therefore used erythrocytes as a standardized model to explore the properties of this protein.


Structure

Function

The main function of spectrin is its contribution to the cytoskeleton of cells. It gives cells support, locomotion and their overall shape.

Homework

Lecture 4 - Nucleus - What did you find interesting and did not know about the nucleus?


From the nucleus lecture, I have learnt that the nucleus consists of two concentric membranes, which form the nuclear envelope. It was interesting to know that they break down during mitosis and also contain nuclear pores that make them permeable.


Lecture 5 - Exocytosis - What concept about exocytosis did you find difficult to understand?


Lecture 7 - Mitochondria - What types of cellular processes require lots of energy from the mitochondria?


The mitochondria produce energy (ATP) using energy that is stored in food by aerobic respiration. After glycolysis, pyruvate enters the mitochondrion to enter the Krebs cycle in order to complete the oxidation of organic fuel and finally produce ATP. Cellular processes such as signaling of cells, transportation of cells across cell membranes, cell differentiation, biosynthesis and locomotion require large amounts of the energy produced from the mitochondria.


Lecture 8 - Adhesion - What do the different "CAM" acronyms stand for?


CAM - cell adhesion molecules

Ng-CAM stands for Neuroglia Cell Adhesion Molecule

I-CAM stands for Intercellular Cellular Adhesion Molecule

L-CAM stands for Liver Cell Adhesion Molecule


Lecture 10 - What is the name of the epidermal layer between the basal and granulosa layer and how does it relate to intermediate filaments?


The name of the epidermal layer between the basal and granulosa layer is called the stratum spinosum. Intermediate filaments are synthesized by cells of the stratum spinosum. These filaments help support the structure and also resists abrasion of the skin.


Lab 6 - "If you've seen differences in the distribution of phenotypes in Tm4 over-expressing B35 cells versus control B35 cells, describe these differences. Formulate a hypothesis with regards to what changes on the molecular level may have occurred due to the over-expression of Tm4 that lead to morphological changes that you have observed"


Lecture 14 - Confocal Microscopy - What are the 2 main forms of generating confocal microscopy?


Lecture 15 - Cell Cycle - What does "S" stand for in the S phase?


The S phase stands for the synthesis phase. It occurs during interphase in between G1 phase and the G2 phase.