National Cancer Institute Thesaurus

Last uploaded: February 21, 2019
Preferred Name

Alpha Helix

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C13369

code

C13369

DEFINITION

A right-handed spiral conformation; the a-helix has a pitch of 5.4 A and has 3.6 amino acid residues per turn; every main chain C=O and N-H group is hydrogen-bonded to a peptide bond 4 residues away; the peptide planes are roughly parallel with the helix axis and the dipoles within the helix are aligned, i.e. all C=O groups point in the same direction and all N-H groups point the other way; side chains point outward from helix axis and are generally oriented towards its amino-terminal end. (from expasy.org)

label

Alpha Helix

Legacy_Concept_Name

Alpha_Helix

Preferred_Name

Alpha Helix

prefixIRI

C13369

prefLabel

Alpha Helix

Semantic_Type

Spatial Concept

UMLS_CUI

C0599214

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C48043

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http://purl.obolibrary.org/obo/SO_0001117 Sequence Types and Features Ontology LOOM
http://semanticscience.org/resource/SIO_010468 Semanticscience Integrated Ontology LOOM