Table 2 Types of Extracellular Enzymes Related to Straw Decomposition and Their Related Substrates, Enzyme Function and Enzymes International System Classification Number (E.C).

From: Regulation of straw decomposition and its effect on soil function by the amount of returned straw in a cool zone rice crop system

Cor. cycle

Enzyme

Abbreviation

E.C

Substrate

Enzyme function

C cycling

α-glucosidase

αG

3.2.1.20

4-MUB-α-D-glucoside

Sugar degradation

β-glucosidase

βG

3.2.1.21

4-MUB-β-D-glucoside

Sugar degradation

β-cellobiosidase

CBH

3.2.1.91

4-MUB-β-D-cellobioside

Cellulose degradation

β-xylosidase

βX

3.2.1.37

4-MUB-β-D-xyloside

Hemicellulose degradation

N cycling

N-Acetyl-glucosaminidase

NAG

3.2.1.30

4-MUB-N-acetyl-β-D-glucosanimide

Chitin degradation

Leucine aminopeptidase

LAP

3.4.11.1

L-Leucine-7-amino-4-methyl coumarin

Protein degradation

Redox reaction

Phenol oxidase

Phox

1.10.3.2

L-DOPA

Lignin oxidation, toxicity reduction

Peroxidase

Perox

1.11.1.7

L-DOPA

Lignin degradation

  1. Cor. Cycle: an enzyme involved in this cyclic process; 4-MUB:4-methylumbelliferone; L-DOPA: L-3,4-dihydroxyphenylalanine.