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Pi helix
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#	Item
1	An Invariance Theorem for Helices Tom Verhoeff February 2011, Updated August 2013 Definitions Helix H(ψ, φ) is defined by the helix turtle program (see [1, 2]) with unit step, roll angle ψ, and turn angle φ, that is, Add to Reading List Source URL: www.win.tue.nl Language: English - Date: 2013-08-12 13:47:18 Trigonometric functions Trigonometry Helix Alpha helix Triangle Pi helix Geometry Helices Coordinate systems
2	Theoretically exact FBP reconstruction algorithms for two general classes of curves Alexander Katsevich, Michael Kapralov Abstract— We report on two extensions of exact FBP inversion formulas to more general classes of Add to Reading List Source URL: people.csail.mit.edu Language: English - Date: 2014-12-09 10:13:49 Circle Trigonometric functions Helix Pi Frenet–Serret formulas Geometry Mathematical analysis Curves
3	Scientists shed light on controversial theory of protein structure Add to Reading List Source URL: phys.org Language: English - Date: 2015-04-17 01:03:51 Biochemistry Proteins Alpha helix Protein structure Protein Pi helix Protein secondary structure Biology Helices Chemistry
4	Development of Physically Reasonable Protein Structures Add to Reading List Source URL: www.ncnr.nist.gov Language: English - Date: 2010-09-03 13:54:32 Helices Angle Dihedral angle Dihedral group Dihedral Pi helix Geometry Protein structure Euclidean geometry
5	THE STRUCTURE OF THE a-POLYPEPTIDES BY F. H. Add to Reading List Source URL: profiles.nlm.nih.gov Language: English - Date: 2004-08-12 14:40:09 Alpha helix Protein structure Hydrogen bond Helix Protein DNA 310 helix Pi helix Helices Chemistry Biology
6	A Novel Method for Sampling Alpha-Helical Protein Backbones Add to Reading List Source URL: www.osti.gov Language: English - Date: 2013-12-02 14:28:07 Biochemistry Protein structure Bioinformatics Protein structure prediction Alpha helix Turn Protein secondary structure Pi helix Biology Helices Chemistry
7	Section IV STRUCTURAL AND FUNCTIONAL ASSIGNMENT 19 SECONDARY STRUCTURE ASSIGNMENT Add to Reading List Source URL: www.sdsc.edu Language: English - Date: 2010-10-16 12:00:50 Chemical bonding Protein secondary structure Stereochemistry DSSP Hydrogen bond STRIDE Alpha helix Beta sheet Pi helix Chemistry Protein structure Helices
8	Sequence Structure Relationship Add to Reading List Source URL: www.acsu.buffalo.edu Language: English - Date: 2009-03-19 18:19:20 Helices Bioinformatics Proteins Protein domains Helix bundle Alpha helix Beta sheet Protein Pi helix Biology Protein structure Biochemistry

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