Three-dimensional structure of porcine pancreatic carboxypeptidase B with an acetate ion and two zinc atoms in the active site

Journal Article · Wed Mar 15 00:00:00 EDT 2017 · Crystallography Reports

DOI:https://doi.org/10.1134/S106377451702002X· OSTI ID:22645197

Kuranova, I. P. ^[1]

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1. Russian Academy of Sciences, Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” (Russian Federation)

Crystals of porcine pancreatic carboxypeptidase B (CPB) were grown by the capillary counter-diffusion method in the presence of polyethylene glycol and zinc acetate. The three-dimensional structure of CPB was determined at 1.40 Å resolution using the X-ray diffraction data set collected from the crystals of the enzyme at the SPring 8 synchrotron facility and was refined to R{sub fact} = 17.19%, R{sub free} = 19.78%. The structure contains five zinc atoms, two of which are present in the active site of the enzyme, and an acetate ion. The arrangement of an additional zinc atom in the active site and the acetate ion is different from that reported by Yoshimoto et al.

• OSTI ID: 22645197
• Journal Information: Crystallography Reports, Vol. 62, Issue 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACETATES
CARBOXYPEPTIDASES
PANCREAS
POLYETHYLENE GLYCOLS
POLYETHYLENES
SPRING-8 STORAGE RING
THREE-DIMENSIONAL LATTICES
X-RAY DIFFRACTION
ZINC