The alpha helix (Î±-helix) is a common secondary structure of proteins and is a righthand-coiled or spiral conformation (helix) in which every backbone N-H group donates a hydrogen bond to the backbone C=O group of the amino acid four residues earlier (hydrogen bonding).his secondary structure is also sometimes called a classic PaulingâCoreyâBranson alpha helix (see below). The name 3.613-helix is also used for this type of helix, denoting the number of residues per helical turn, and 13 atoms being involved in the ring formed by the hydrogen bond.
For other uses, see LPN (disambiguation) . A licensed practical nurse (LPN) in much of the United States and most Canadian provinces is a nurse who cares for people who are sick, injured, convalescent, or disabled. LPNs work under the direction of registered nurses or physicians.or other uses, see LPN (disambiguation) . A licensed practical nurse (LPN) in much of the United States and most Canadian provinces is a nurse who cares for people who are sick, injured, convalescent, or disabled. LPNs work under the direction of registered nurses or physicians.
Best Answer: A LPN is a Licensed Practical Nurse, is educated with an Associates degree or less (many just have a certificate and not a degree), and is essentially an entry level nurse, trained in basic nursing skills and patient cares.n LPN has about 1 1/2 years of training and a nurse practitioner has her BSN and a master's degree in nursing so she is 5-6 years of education. A nurse practitioner can bill the insurance companies as much as a physician can so she makes in excess of $100,000 a year.