DNA Damage Theory DNA damage by UV rays Image credit: Wikipedia The DNA Damage Theory helps to understand how long we live and our health. As we age genetically our cells become more and more damaged, this can be called as cellular aging The theory shows that Our DNA can hurt inany ways, from inside our bodies and from outside. Things like environmental factors and Oxidative stress can harm our DNA . Key takeaways • DNA can be damage by environmental exposures and oxidative stress. • The DNA damage theory explain how accumulated genetic damage contribute to cellular aging and impact overall health • Understanding the mechanism of DNA damage is necessary for developing intervention to extend lifespan. • Ongoing researches are focusing on DNA damage, cellular senescence, and age related diseases. • DNA repair and reduce the effect of DNA damage, may promote healthy aging. Understandin...
What is protein?
Protein is the basic components of living cells,it made of carbon,hydrogen,nitrogen and one or more chain of amino acids.Like carbohydrate and fats protein is a macro nutrient it is commonly available in animal products,eggs, meat, milk,yoghurt etc,it also available in beens, nuts,legumes etc.Proteins makeup 15 % of a person's body weight
According to their structure there are three types of proteins are there,they are fibrous, globular,and membrane.Fibrous proteins forms muscle fibre,bones,connetive tissues and tendons,eg;actin,myosin,karatin.Globular protein is water soluble,they have so many functions in our body such as transporting,catalysing,and regulating ,eg; albumin,alphaglobin,hemoglobin etc.
According to their functions proteins are catagarised to eight groups,they are hormones, defensive proteins, enzymatic proteins,transport proteins,structural proteins,storage proteins,receptor proteins and contractile proteins.
Hormones: are protein based secretion of endocrine glands,which affect curtain cells in our body,those cells have specific receptor to accommodate proteins,on which the hormones attach them self.such cells are known as target cells.From hormone the cell got signals. For example insulin secreted by pancreas used to control sugar level
Defensive proteins: antibodies the important part of our immune system is a defensive protein which is produced in white blood cells(WBC) attack foreign bodies such as bacteria,virus etc that enter in our body and make them inactive.
Enzymatic hormones: which accelerate metabolic processes in our body,facilitate in liver function direction,glycogen convertion etc
Transport protein: these protein carries vital materials to cells ,for example hemoglobin carries oxygen from lungs and distribute to tissues
Structural protein: Collagen,karatin and elastin are structural protein,collagen forms the collective frame work of our muscles,skin,bones and cartilages.karatin is the structural component of hair,teath,nails and skin etc
Storage protein: these proteins are storing meral ions,eg; iron,potassium etc.Iron storage in R.B.C(red blood cells) is controlled by a storage protein called ferritin.Ovalbumin and casein also examples of storage proteteins.
Receptor proteins: it controls the the materials that enter and leaves the cell, it always located in outer part of a cell,some of the receptors activate enzymes and other used to stimulate endocrine glands to produce epinephrine and insulin.
Contractile protein: these are muscle regulates,which regulate srength and speed of the muscles on our body including heart muscles eg actin,myocin
Hey friends,l think you understand what is protein and its importants in living organism, one more thing, the researchers found that protein foldings are decreasing when we get old. ahttps://cellinsight.blogspot.com/2020/03/why-we-are-getting-old.html
Tanks
john
Comments