%0 Journal Article %T Crystal and molecular structure of V-amylose complexed with butan-1-ol %+ Centre de Recherches sur les Macromolécules Végétales (CERMAV) %+ Département de pharmacochimie moléculaire (DPM) %A Le, Cong Anh Khanh %A Mazeau, Karim %A Nishiyama, Yoshiharu %A Ogawa, Yu %A Choisnard, Luc %A Wouessidjewe, Denis %A Putaux, Jean-Luc %< avec comité de lecture %@ 0032-3861 %J Polymer %I Elsevier %V 243 %P 124651 %8 2022-03 %D 2022 %R 10.1016/j.polymer.2022.124651 %K V-amylose %K butan-1-ol %K inclusion compounds %K structure refinement %Z Chemical Sciences/Polymers %Z Chemical Sciences/CristallographyJournal articles %X Chain-folded lamellar V-amylose single crystals were prepared by adding butan-1-ol to hot dilute aqueous solutions of native amylose. The base plane electron and X-ray diffraction patterns recorded from hydrated specimens agreed with a P212121 space group and an orthorhombic unit cell. A molecular model resulting from an exhaustive search of helix position and restrained structure refinement against diffraction data was proposed. The unit cell contains 4 antiparallel left-handed 6 fold amylose single helices with 1 butan-1-ol molecule located inside each of the helical cavities. In addition, 4 butan-1-ol and 20 water molecules are distributed in the 4 interstitial spaces. The amylose helices form rows along the b-axis that are alternatively shifted by ±b/8 with respect to one another, which validates the geometrical model proposed by Helbert and Chanzy in 1994. %G English %2 https://cnrs.hal.science/hal-03576868/document %2 https://cnrs.hal.science/hal-03576868/file/Le_amylose_butanol_Polymer_2022_hal.pdf %L hal-03576868 %U https://cnrs.hal.science/hal-03576868 %~ UGA %~ CNRS %~ CERMAV %~ INC-CNRS %~ UGA-EPE %~ TEST2-HALCNRS