What is the function or functions of creatine ? and its chemical structure?

Question

the best answer will get 10 points and if you put a source that is located in internet it would be easier to get the 10 points

Answer 1

Basically creatine is an immediate energy source for the body. Your body uses ATP for its energy needs, but this constantly needs to be regenerated by cellular respiration, glycolysis, and most immediately, phosphorylation by creatine. In other words, it quickly regenerates ATP. This diagram will probably help

http://instruct.westvalley.edu/granieri/bio15creat.jpg

Its chemical structure is found here: (phosphocreatine is creatine)

http://en.wikipedia.org/wiki/Image:Phosphocreatine.png

Answer 2

C4H9N3O2 ( I tried to paste the picture, but it wouldn't work!)

Creatine is a nitrogenous organic acid that naturally occurs in vertebrates and helps to supply energy to muscle cells.

Creatine (by way of conversion to and from creatine phosphate) functions as part of a system based on arginine/phosphoarginine that operates in many invertebrates. The presence of this energy shuttle keeps the ATP/ADP ratio high which ensures that the free energy of ATP remains high and minimizes the loss of adenosine nucleotides, which would cause cellular dysfunction.

In humans, typically half of stored creatine originates from food (mainly from meat and fish). However, endogenous synthesis of creatine in the liver is sufficient for normal activities. This is evidenced by the fact that, even though vegetables do not contain creatine, vegetarians do not suffer from creatine deficiency.

Creatine supplementation has been, and continues to be, investigated as a possible therapeutic approach for the treatment of muscular, neurological and neuromuscular diseases (arthritis, congestive heart failure, disuse atrophy, gyrate atrophy, McArdle's disease, Huntington's disease, miscellaneous neuromuscular diseases, mitochondrial diseases, muscular dystrophy, neuroprotection, etc.).

Hospitals and doctors routinely measure blood creatinine levels to determine kidney function. Creatine is broken down to creatinine, which is eliminated through the kidneys; if kidney function is impaired, creatinine levels will rise.