Anonymous asked in Science & MathematicsBiology · 6 months ago

Is there a listing of the number of atoms in any common molecule (such as ATPase, mTOR and other enzymes in the human body)?

Yes, more complex molecules usually have variants with slightly different numbers but at least a rough number of atoms?


Obviously questions way further down the line such as "how are the atoms arranged in the molecule in a three dimensional formation" are impossible without knowing the elements and amounts of each.

3 Answers

  • Anonymous
    6 months ago

    In answer to your update that isn't what people really do. They do not say oh what elements are present, how many atoms of each, now we know that we can move up a level and look at the molecule. As Ted K said knowing how many atoms of each element in a complex biological molecule has no purpose other than answering a question in a quiz.

  • Ted K
    Lv 7
    6 months ago

    Maybe there is somewhere, but just knowing "how many atoms" really wouldn't be all that useful, except maybe as an answer to a trivia question.  There is very little a chemist can do with knowing "total number of all atoms" in a molecule, far more useful to know which atoms are there and where they are positioned in relation to each other, and the whole molecule's 3-dimensional conformation or shape.  This is especially true with proteins, such as mTOR or ATPase, whose function  is determined not by the total number of atoms, but rather, their amino acid sequences,  how all those amino acids are arranged in 3-D space, and how even small changes in their relative positions and orientations affect the whole molecules' activities.  Indeed, the current state of the art in this field is all geared toward determination of changes in 3-D structure and conformation during the course of these molecules' activity, using crystallographic and cryo-EM methods, coupled with directed mutations in specific amino aqcid residues in order to understand what regions of a protein molecule are involved in its bioactivity.

    The best response to your update is to point out that professional chemists and bioochemists don't have much use for what you're talking about.  So unless you are willing to come out and claim that they don't know what they're doing, I suggest you move on to something else.

  • Anonymous
    6 months ago

    Different molecules have different molecular formulas, H2O for example is a molecular formula for water and it says 2 hydrogen and 1 oxygen per molecule. Glucose has a molecular formula of C6H1206, It is called a carbohydrate because it has the equivalent of 6 carbon atoms and 6 water molecules in each glucose  molecule. Other biological compounds are more complex and may contain thousands or more of different atoms per molecule. ATPase is an enzyme and enzymes are made of long strings of different amino acids. Each amino acid has its own molecular formula. Rather than listing the raw number of each type of atoms in an enzyme, it is more common to just list the amino acid sequence of that enzyme and any additional chemicals in it. 

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