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Literature summary for 3.2.1.14 extracted from

  • Suzuki, K.; Sugawara, N.; Suzuki, M.; Uchiyama, T.; Katouno, F.; Nikaidou, N.; Watanabe, T.
    Chitinases A, B, and C1 of Serratia marcescens 2170 produced by recombinant Escherichia coli: enzymatic properties and synergism on chitin degradation (2002), Biosci. Biotechnol. Biochem., 66, 1075-1083.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression in Escherichia coli Serratia marcescens

Organism

Organism UniProt Comment Textmining
Serratia marcescens
-
2170
-
Serratia marcescens 2170
-
2170
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
chitin + H2O isoform ChiA is the most effective enzyme toward insoluble chitin, isoform ChiC1 is the most effective enzyme toward soluble chitin, ChiA, ChiB and ChiC1 hydrolyze water-soluble chitin very efficiently but powdered chitin is a very poor substrate Serratia marcescens N,N'-diacetylchitobiose + N,N',N''-triacetylchitotriose + N-acetylglucosamine (GlcNAc)2 is almost exclusively generated from ChiA, ChiB and ChiC1, ChiA produced as minor products GlcNAc and (GlcNAc)3, ChiB produced as minor product only (GlcNAc)3, ChiC1 produced as minor product only GlcNAc ?
chitin + H2O isoform ChiA is the most effective enzyme toward insoluble chitin, isoform ChiC1 is the most effective enzyme toward soluble chitin, ChiA, ChiB and ChiC1 hydrolyze water-soluble chitin very efficiently but powdered chitin is a very poor substrate Serratia marcescens 2170 N,N'-diacetylchitobiose + N,N',N''-triacetylchitotriose + N-acetylglucosamine (GlcNAc)2 is almost exclusively generated from ChiA, ChiB and ChiC1, ChiA produced as minor products GlcNAc and (GlcNAc)3, ChiB produced as minor product only (GlcNAc)3, ChiC1 produced as minor product only GlcNAc ?
N,N',N'',N''',N'''',N'''''-hexaacetylchitohexaose + H2O
-
Serratia marcescens N,N'-diacetylchitobiose + N,N',N'',N'''-tetraacetylchitotetraose + N,N',N''-triacetylchitotriose ChiA almost exclusively generates (GlcNAc)2 and (GlcNAc)4, ChiB and ChiC1 generated all three products ?
N,N',N'',N''',N'''',N'''''-hexaacetylchitohexaose + H2O
-
Serratia marcescens 2170 N,N'-diacetylchitobiose + N,N',N'',N'''-tetraacetylchitotetraose + N,N',N''-triacetylchitotriose ChiA almost exclusively generates (GlcNAc)2 and (GlcNAc)4, ChiB and ChiC1 generated all three products ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
ChiA and ChiB Serratia marcescens
65 70 ChiC1 Serratia marcescens

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
30
-
ChiC1: 40% of activity remained, ChiA and ChiB: 10% of activity remained Serratia marcescens

pH Range

pH Minimum pH Maximum Comment Organism
4 10
-
Serratia marcescens