The following points highlight the top three filamentous structures of eukaryotic cell. The filamentous structures are: 1. Actin Filaments 2. Microtubules 3. Intermediate Filaments. Filamentous Structure # 1. Actin Filaments: a. The G-actin protein of non-muscle cells has a molecular weight of about 43,000 and contains N-methylhistidyl residues. b. This actin spontaneously polymerizes in the presence of magnesium and potassium [...]
In this article we will discuss about the Importance of Nitric Oxide (NO) in Health and Disease:- 1. Formation of Nitric Oxide (NO) 2. Relaxative Action on Smooth Muscle of Blood Vessels 3. Important Biologic Functions. Formation of Nitric Oxide (NO): 1. Nitric oxide (NO) is formed by the action of the enzyme NO synthase, which is cytosolic. The endothelial [...]
In this article we will discuss about Muscle:- 1. Muscle Structure 2. Proteins in Muscle 3. Phosphagens 4. Inorganic Constituents. Muscle Structure: 1. Skeletal muscle is composed of fibrils surrounded by electrically excitable membrane, the sarcolemma. 2. The individual muscle fibre consists of a bundle of many myofibrils arranged in parallel. These are embedded by intramuscular fluid termed the sarcoplasm. [...]