Takashima T, Ohnuma T, Fukamizo T. NMR assignments and ligand-binding studies on a two-domain family GH19 chitinase allergen from Japanese cedar (Cryptomeria japonica) pollen.
Biomol NMR Assign 2017;
11:85-90. [PMID:
28032262 DOI:
10.1007/s12104-016-9725-4]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/15/2016] [Indexed: 06/06/2023]
Abstract
A two-domain family GH19 chitinase from Japanese cedar (Cryptomeria japonica) pollen, CJP-4, which consists of an N-terminal CBM18 domain and a GH19 catalytic domain, is known to be an important allergen, that causes pollinosis. We report here the resonance assignments of the NMR spectrum of CJP-4. The backbone resonances were almost completely assigned, and the secondary structure was estimated based on the chemical shift values. The addition of a chitin dimer to the enzyme solution perturbed the chemical shifts of the resonances of amino acid residues forming a long extended binding site spanning from the CBM18 domain to the GH19 catalytic domain.
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