Although some whites reacted negatively to the spreading protests of 1963, Kingâs linkage of black militancy and idealism helped bring about passage of the Civil Rights Act of 1964. This legislation outlawed segregation in public facilities and racial discrimination in employment and education.
Physical Properties: Nonpolar. Leucine, an essential amino acid, is one of the three amino acid with a branched hydrocarbon side chain. It has one additional methylene group in its side chain compared with valine.Like valine, leucine is hydrophobic and generally buried in folded proteins.Close window.hysical Properties: Nonpolar. Leucine, an essential amino acid, is one of the three amino acid with a branched hydrocarbon side chain. It has one additional methylene group in its side chain compared with valine.
Within the hydrophobic amino acid group, side chains vary in size and shape. Four of the hydrophobic amino acids, alanine, valine, leucine, and isoleucine, have side chains that are branched or unbranched hydrocarbon chains.ydrophobic amino acids. The side chains of the hydrophobic amino acids are nonpolar and cannot form hydrogen bonds with water or other polar entities. For this reason, hydrophobic side chains tend to be located on the inside of soluble proteins, protected from water.