THE STRUCTURE OF THE PEA LECTIN-D-MANNOPY RANOSE COMPLEX AT A 2.1 ANGSTROM RESOLUTION

The structure of a new crystal complex (P2(1)2(1)2(1) spatial group, c ell dimensions: a 73.926, b 104.083, and c 64.837 Angstrom) of pea lec tin (Pisum sativum, dimer, molecular mass ca. 52 kDa) with D-mannopyra nose aas established by the molecular replacement approach at a resolu tion of 2.1 Angstrom. After crystallographic refinement, the value of the R-factor was 16.1%. The mannose molecule was shown to be fixed by six hydrogen bonds with Asps81, Gly99, Asn125, Ala217, and Glu218.