a-helix dipole moment Please refer to branden carl. and John Tooze. Introduction to Protein structure 2nd ed Garland Publishing, Inc, 1999. ISBN: 0815323042α-helix dipole moment Please refer to Branden, Carl, and John Tooze. Introduction to Protein Structure. 2nd ed. Garland Publishing, Inc., 1999. ISBN: 0815323042