| what is a primary structure? | simple polypeptide chain with amino acid joined together by peptide bonds |
| in the secondary structure what shapes can form | a - helix shape or B pleated sheet |
| why do the secondary protein structure form these shapes? | due to the formation of hydrogen bonds between weak, negatively charged nitrogen and oxygen atoms and weak, positively charged hydrogen atoms. |
| what does an a - helix look like | has hydrogen bonds |
| what does a beta pleated sheet look like? | has hydrogen bonds |
| what does a tertiary protein structure fold into | a 3D structure |
| what bonds are in tertiary structure, pt 1 | disulfide bonds (a disulfide bridge) that form between cysteine amino acids |
| what bonds are in tertiary structure, pt 2 | ionic bonds that form between charged R groups, + and a - charge |
| what bonds are in tertiary structure, pt 3 | hydrogen bonds that form between R groups |
| what is a Quaternary structure | several polypeptide chains held together by the same bonds found in the tertiary structure. |
| what do quaternary protein structures often contain | prosthetic groups (non-proteins that attach to proteins and assist them and include metal ions, sugars, vitamins, methyl groups and phosphate groups) |
