Detailed refinement of the crystal structure of Vh-amylose
1981; Elsevier BV; Volume: 89; Issue: 1 Linguagem: Inglês
10.1016/s0008-6215(00)85225-8
ISSN1873-426X
AutoresG. Rappenecker, P. Zugenmaier,
Tópico(s)Biochemical and Molecular Research
ResumoThe crystal structure of Vh-amylose has been refined by a combined analysis of stereochemical conformation and packing, and by analysis of X-ray fibre diagrams. The unit cell is orthorhombic with a 13.65 Å, b 23.70 Å, and c (fibre repeat) 8.05 Å. The chain conformation is a left-handed, six-fold helix with O-6 in the gg (gauche to O-5 and gauche to C-4) position. The water molecules are located inside the helix channel of the amylose and in the interstitial spaces of the helices, forming an intensive hydrogen-bonding network.
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