title: Isolation and morphology of the internal component of human coronavirus, strain 229E.
abstract: Biochemical studies on human coronavirus, strain 229E, indicate that the RNA is present in the virion in association with protein as a ribonucleoprotein (RNP) complex. Morphological studies have revealed that this nucleocapsid is probably a continuous helical RNP.
mesh_terms: D003332:Coronaviridae / Q000032:analysis* / Q000378:metabolism / Q000648:ultrastructure; D009698:Nucleoproteins / Q000302:isolation & purification*; D011487:Protein Conformation; D012367:RNA, Viral / Q000096:biosynthesis; D012261:Ribonucleoproteins / Q000302:isolation & purification*; D014529:Uridine / Q000378:metabolism; D014764:Viral Proteins / Q000302:isolation & purification*
chemical_list: D009698:Nucleoproteins; D012367:RNA, Viral; D012261:Ribonucleoproteins; D014764:Viral Proteins; D014529:Uridine