to make an Amino Acid? and Why?
Definitely not relevant in terms of the MCAT. If you're really curious, it actually takes a different amount of energy to make each amino acid as they all go through different synthetic pathways. Just taking 2 basic examples to illustrate this point, glutamate/glutamine are produced from a transamination of alpha-keto-glutarate, an intermediate in the citric acid cycle. Alanine on the other hand is produced by the transamination of a pyruvate. Pretty much every metabolic intermediate is involved in amino acid synthesis (oxaloacetate, alpha-k-g, pyruvate, etc) as are many other molecules, so there's no set amount of energy required per amino acid. Off the top of my head I think the range is somewhere between 6 or so and 38 ATP.
edit: in this explanation I assumed that the different essential metabolic intermediates, themselves producing different amounts of energy, would illustrate the different amounts of energy used in creating certain amino acids (i.e. amount required for synthesis ~ amount resulting from breakdown)
For a protein composed of "n" number of amino acids,
it takes (4n)-1 number of ATP for the translation process.
For instance, a protein composed of 50 AA takes 199 ATP to translate. Its not technically all ATP, but it takes 199 high energy bonds.
Hope that makes sense.
For a protein composed of "n" number of amino acids,
it takes (4n)-1 number of ATP for the translation process.
For instance, a protein composed of 50 AA takes 199 ATP to translate. Its not technically all ATP, but it takes 199 high energy bonds.
Hope that makes sense.
Thanks, this is the right answer. Does each ATP have just one high energy bond then? I assume it is the PPi you are referring to.
princeton says 200 though >_> states that 1 gtp is needed for termination?For a protein composed of "n" number of amino acids,
it takes (4n)-1 number of ATP for the translation process.
For instance, a protein composed of 50 AA takes 199 ATP to translate. Its not technically all ATP, but it takes 199 high energy bonds.
Hope that makes sense.