Family: GH18

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Lineage coverage
Species 
53.79%
Genus 
56.88%
Family 
48.75%
Order 
42.22%
Class 
16.67%
Phylum 
25%

Description:
Glycoside hydrolase family 18 (GH18) is a type of plant chitinase. This is an RLK family with uncommon extracellular domain. The hidden Markov model (HMM) PF00704 was used for the GH18 classification.

References:
1.Structures and mechanisms of glycosyl hydrolases. Davies G, Henrissat B. Structure 3, 853-9, (1995). PMID: 8535779. 2.Conserved catalytic machinery and the prediction of a common fold for several families of glycosyl hydrolases. Henrissat B, Callebaut I, Fabrega S, Lehn P, Mornon JP, Davies G. Proc. Natl. Acad. Sci. U.S.A. 92, 7090-4, (1995). PMID: 7624375.
3.Chitinase-like proteins in lung injury, repair, and metastasis. Lee CG, Dela Cruz CS, Ma B, Ahangari F, Zhou Y, Halaban R, Sznol M, Elias JA. Proc Am Thorac Soc 9, 57-61, (2012). PMID: 22550243.
4.Structure of chitinase D from Serratia proteamaculans reveals the structural basis of its dual action of hydrolysis and transglycosylation. Madhuprakash J, Singh A, Kumar S, Sinha M, Kaur P, Sharma S, Podile AR, Singh TP. Int J Biochem Mol Biol 4, 166-78, (2013). PMID: 24380021.
5.High resolution crystal structure of the endo-N-Acetyl-a-D-glucosaminidase responsible for the deglycosylation of Hypocrea jecorina cellulases. Stals I, Karkehabadi S, Kim S, Ward M, Van Landschoot A, Devreese B, Sandgren M. PLoS ONE 7, e40854, (2012). PMID: 22859955.
6.Human YKL-39 is a pseudo-chitinase with retained chitooligosaccharide-binding properties. Schimpl M, Rush CL, Betou M, Eggleston IM, Recklies AD, van Aalten DM. Biochem. J. 446, 149-57, (2012). PMID: 22742450.

List of GH18 in RLKomes

GH18 in Arabidopsis thaliana (3702.GCA_000001735.1)

Genetic map for RLKs in reference sequences with length > 1MB

No linkage map is available.

Protein sequence length distribution of GH18 family

Summary of function domain topology distribution for GH18 family

Domain topology percentage

Domain word cloud

Spatial structure

RLK list
(Click RLK IDs to see its details in the RLK page or click Gene ID to explore its details in its original database. click cDNA, CDS or Prteoin button to download its corresponding sequences.)
Phylogenetic tree
Explore the evolutionary relationships of the GH18 family members in phylogenetic tree

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Zoom in on sequence alignments
Download newick file
Contact: Jinding Liu, biotec(At)njau.edu.cn
©Bioinformatics Center and Plant Phytophthora Interaction Laboratory, Nanjing Agricultural University