Do you have curiosities or misunderstandings about molecular and cell biology? Have you ever been interested in how the mechanisms inside our “small factories” work? This is your opportunity to discover and have a better comprehension of one of the most interesting subjects discussed in the 1st year.

          Dr. Ana-Maria Enciu and her younger disciples will be your mentors in this journey through a microscopic world.

          So, if you want to learn and understand more about all the things which can not be seen with the naked eye and only by a microscope, we invite you to send your questions in our form and see you for more explanations on Friday evening.

1st MENTORING SESSION

14th January 2022

Which is the role of the integrins?

Integrins are transmembrane proteins and have an important role in the linkage of the extracellular matrix to the cell. They also work as receptors for matrix components (collagen, fibronectin, laminins).

What are the peroxisomes?

They are some small organelles which present an endomembrane (vesicles). They contain a large number of proteins with enzymatic activity involved in many metabolic pathways. A short list of their functions can be:
-the oxidation of fatty acids,
-oxidative metabolism of aminoacids and purines,
-the metabolism of reactive oxygen species,
-they offer protection against viruses and bacteria,
-they are also involved in synthesis of: cholesterol, biliary acids, leukotrienes etc.

The cell membrane - structure, functions

Short description: We can define it as an ultrastructure compound by polar lipids, cholesterol and proteins which form a bistrat layer. It separates the interior of the cell with the exterior environment. Functions:
-transport of the nutrients in both ways (exterior → interior, interior → exterior)
-adhesion with other cells and the extracellular matrix by using adhesion proteins
-it presents receptors on the surface (involved in different signaling pathways)

Types of junctions:

-tight junction
-adherens junction
-desmosome
-gap junction

X