Flashcards in C2 p3 slides Proteins Deck (28)
Proteins are polymers of ?
short amino acid chains are called
Total basic and modified amino acids
Proteins made on ribosomes contain only ?-amino acids
In solution, amino acids are ?, meaning they have both positive and negative charges
The chiral carbon i an amino acid is called an ?
The amino group of an amino acid is protonated or unprotonated at neutral ph
The carboxyl group of an amino acid is protonated or unprotonated at neutral ph
pk2 of amino acid (amino group)
pk1 of amino acid (carboxyl group)
Tryptophan is polar or nonpolar
glycine is unique in that ?
it's side chain only consists of hydrogen
Glycine is technically hydrophobic or hydrophillic
glycine often resides where ?
two polypeptides come in close contact
Amino acid that can fit into either hydrophobic or hydrophilic region
amino acid acid side chain with pka closest to physiological ph
With which group would cysteine fall into if it did not have a special characteristic
forms disulfide bond with another one of it's molecules
Proline would fall into this group if it did not have a special character
amino acid that creates kinks in polypeptide chain
bond between amino acids
a peptide bond is a form of ? bond
This bond has characteristics of a double bond
Nucleotides are joined together by ?
Three major functions of nucleotides
carry chemical energy, can combine with other molecules to form coenzymes, signalling molecules
sugar + base
phosphates of ATP connected by ?