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. 2013 Dec;79(23):7482–7490. doi: 10.1128/AEM.02483-13

Table 1.

Properties of the purified FPU-7 extracellular and cell surface chitinases

Chitinase No. of amino acids (molecular mass [kDa]) Predicted domainsa Activity (U/mg)
pNP-(GlcNAc)2 Colloidal chitin
ChiA 933 (97) Signal peptide, GH-18, FnIII × 4, CBM-5/12 × 2 0.041 2.5
ChiB 1,162 (122) Signal peptide, GH-18, FnIII × 5, CBM-5/12 × 3 1.3 2.0
ChiC 766 (82) Signal peptide, GH-18, FnIII × 2, chitinase A N-terminal domain 0.25 2.5
ChiD 724 (78) Signal peptide, GH-18, FnIII × 2, CBM-5/12 0.085 0.58
ChiE 585 (61) Signal peptide, GH-18, FnIII × 2, CBM-5/12 270 4.6
ChiF 834 (87) Signal peptide, GH-18, FnIII × 3, CBM-5/12 × 2 0.048 2.1
ChiW 1,418 (153) Signal peptide, SLH × 3, GH-18 × 2 0.71 5.2
a

Protein domains were annotated by the Pfam server (32, 38). FnIII, fibronectin type III domain. The numbers after the multiplication symbols indicate numbers of domains.