Defence and foreign policy. One of the key reasons for Federation was to achieve a united defence force which could better protect Australia. Around the 1880s, the Australian colonies had become increasingly concerned over the close proximity of foreign powers.
Protein Structure Determination. The three-dimensional shape of a protein is determined by its primary structure. The order of amino acids establishes a protein's structure and specific function. The distinct instructions for the order of amino acids are designated by the genes in a cell.
1 Protein structure plays a key role in its function; if a protein loses its shape at any structural level, it may no longer be functional. 2  Primary structure is the amino acid sequence.  Secondary structure is local interactions between stretches of a polypeptide chain and includes Î±-helix and Î²-pleated sheet structures.