Figure 4.

Multiple alignment of the amino acid sequences of representative plant chitinases chosen among those with a structure-link. The residues conserved in more than 80%, 60% and 40% of the proteins examined are indicated by dark blue, violet and light blue backgrounds, respectively. The two catalytic amino acid residues of family 19 chitinases are indicated by black boxes. The conserved motifs of the chitinase 19 family are underlined in red. The residues in grey boxes are related to the enzymatic activity. The chitinases used are CHI_I_Oe from olive (JN696113, Olea europea), 1CNS_Hv from barley (1CNS_A, Hordeum vulgare), CHI5_Pv from bean (P36361, Phaseolus vulgaris), AGI_Ud from stinging nettle (P11218, Urtica dioica), CHIT_DJ from Japanese yam (P80052, Dioscorea japonica), CHIA_Zm from maize (P29022, Zea mays), CHI4_Bn from rape (Q06209, Brassica napus), CHIX_Ps from pea (P36907, Pisum sativum), CHIA_Sl from tomato (Q05539, Solanum lycopersicum), CHIB_Sl from tomato (Q05540, Solanum lycopersicum), and CHI8_Pt from black cottonwood (P16061, Populus balsamifera subsp. trichocarpa)

Corrado et al. BMC Plant Biology 2012 12:86   doi:10.1186/1471-2229-12-86
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