Most striking is a buried arginine side chain (Arg 56 from synaptobrevin/VAMP) that forms internal hydrogen bonds with three glutamines, one from each of the other helices. The high conservation ...

When the arginine at position 87 is replaced by alanine (R87A), despite the loss of the hydrogen bonds associated with this side chain in the dimer, a three-fold increase in dimer production is ...

There are 20 amino acids that make up proteins and all have the same basic structure, differing only in the R-group or side chain they have. Amino acids are in an equilibrium between two acids with ...

These amino acids can be classified based on various criteria, such as their essentiality, polarity, and side chain properties ... The eleven non-essential amino acids are alanine, arginine, ...