what are molecular pathways . can some body give some site reference or explain the basics of it.?

Answer 1

a molecular pathway is the way in which a cell understand the message and apply it. for example how does the insulin hormone act. when the insulin interact with its receptor on the cell surface, the receptor have an intracellular part that interact with intracellular proteins. this interaction leads to a chemical raction in which some atoms are attached to some proteins. this reaction also activate or deactivate a given number of proteins. and this type of interaction is called the molecular pathway... if you want more details you can search for NFkB on the internet and see lots of schemes showing you the molecular pathway of the activity of this protein

Answer 2

I assume you have at least a fundamental understanding of biology, and understand the dynamic nature of enzmes.

Imagine you are a single cell in a multicellular organism. All of a sudden, there is an influx of viruses. These viral particles have shell coatings and surface proteins that combine with your cell wall (much like two globules of oil or mercury) and introduce foriegn strands of DNA or RNA into your cytoplasm. This DNA or RNA interacts with existing ribosomes and ribosome complexes and churns out new, different strands of RNA. This RNA then interacts with other proteins in your cytoplasm, for example, ubiquitin. Enough ubiquitin and cytotoxic T-cells in your blood stream come to the rescue and kill you before you have become a lytic progenitor of further viral infection.

To make a long story short, the complex interaction of a single molecule or protein with existing proteins and enzymes causes complex chemical reactions. These chemical reactions are the foundation of life (cellular mitosis, cell signalling, nerve cell transmission, hydrolysis, Kreb's cycle, etc) and also of death, as well as various disease states.

I suggest that you pick up a textbook on the subject, from www.half.com or your local college, as most websites will likely not give you the detail that you are looking for.

Answer 3

'Molecular pathways' is a very ambigious term.

You need to clarify which ones you would like to know about.