Risk which is common to an entire class of assets or liabilities. The value of investments may decline over a given time period simply because of economic changes or other events that impact large portions of the market.
Properties of the alpha-helix. 1  The structure repeats itself every 5.4 Angstroms along the helix axis, ie we say that the alpha-helix has a pitch of 5.4 Angstroms. Alpha-helices have 3.6 amino acid residues per turn, ie a helix 36 amino acids long would form 10 turns.
Helix Clothing at Discount Prices. Shop Helix. Helix is a brand of clothes for boys, teens, and men that's manufactured and exclusively sold by Kohl's. Entrepreneur Maxwell Kohl opened his first supermarket in Milwaukee in 1946 and then expanded his venture to include a chain of department stores in 1962.