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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Abbreviations
- CJP-4:
-
A class IV chitinase allergen from Cryptomeria japonica
- GlcNAc:
-
N-acetyl-d-glucosamine
- (GlcNAc)n :
-
β-1,4-Linked oligosaccharide of GlcNAc
- NMR:
-
Nuclear magnetic resonance
- HSQC:
-
Two-dimensional heteronuclear single quantum correlation
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Funding
This work was supported by “Strategic Project to Support the Formation of Research Bases at Private Universities: Matching Fund Subsidy from MEXT (Ministry of Education, Culture, Sports, Science and Technology, Japan)”, 2011–2015 (S1101035), to TF.
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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 11, 85–90 (2017). https://doi.org/10.1007/s12104-016-9725-4
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DOI: https://doi.org/10.1007/s12104-016-9725-4