I know the topic title may have put you off slightly but it’s a very interesting topic let me assure you. I’m sure you intellectual giants of SF have some sort of idea what amino acids are? Now Given 20 different amino acids, a polypeptide chain of n residues can have any one of 20n possible sequence arrangements. To put what I've said into context, consider the number of tripeptides possible if there were only three different amino acids A, B, and C (tripeptide =3=n;n3=33=27)

AAA BBB CCC
AAB BBA CCA
AAC BBC CCB
ABA BAB CBC
ACA BCB CAC
ABC BAA CBA
ACB BCC CAB
ABB BAC CBB
ACC BCA CAA

For a polypeptide chain of 100 residues in length, a rather modest size, the number of possible sequence is 20100, or because 20 = 101.3, 10130 unique possibilities. Let me tell you these numbers are more than astronomical. The reason for this being that an average protein molecules of 100 residues would have a mass of 13,800 Daltons (average molecule mass of an amino acid residue = 138), 10130 such molecules would have a mass mass of 1.38 x 10134 Daltons. Now let me bring to sf’s attention the mass of the observable universe is estimated to be 1080 proton masses and that is about 1080 Daltons. Thus, the universe lacks enough material to make just one molecule of each possible polypeptide sequence for a protein only 100 residues in length. Isn’t that just amazing?

MUSLIM is BUDDHA1 ignore him

MUSLIM is BUDDHA1 ignore him

You're getting annoying now. I've told you I am not him, the moderators can do an IP check.

You're getting annoying now. I've told you I am not him, the moderators can do an IP check.
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Buddha1 ALERT

Dumb asses