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Table 4 Enzyme activities for AFEX-SG hydrolysis measured by oxime-NIMS

From: Determination of glycoside hydrolase specificities during hydrolysis of plant cell walls using glycome profiling

 

G1 (mM)

G2 (mM)

G3 (mM)

G4 (mM)

Total (mM)

Average (mM)

Stdev

  

No enzyme

0.2

0.0

0.0

0.0

0.58

  

CMX00_3a

4.6

5.8

0.2

0.1

8.54

    
 

4.5

5.0

0.1

0.0

7.67

10.2

0.8

  

XynY

0.0

1.3

1.5

0.2

0.76

    
 

0.0

1.0

1.0

0.2

0.54

2.6

0.6

  

XynA

0.0

0.0

0.0

0.0

0.02

    
 

0.0

0.0

0.0

0.0

0.00

0.0

0.0

  
 

P1 (mM)

P2 (mM)

P3 (mM)

P4 (mM)

P5 (mM)

P6 (mM)

Total (mM)

Average (mM)

Stdev

No enzyme

0.0

0.0

0.0

0.0

0.0

0.0

0.0

CMX00_3a

3.2

14.5

17.3

6.7

1.6

0.3

43.6

  
 

3.1

15.3

17.0

6.6

1.1

0.2

43.3

43.4

0.2

XynY

94.5

127.9

40.5

10.5

1.1

0.1

274.6

  
 

93.1

143.3

40.1

12.0

0.9

0.0

289.5

282.0

10.5

XynA

36.7

94.5

0.3

2.2

10.7

1.0

145.3

  
 

39.3

95.0

0.1

1.5

11.0

0.3

147.3

146.3

1.4

 

Xa (mM)

XG (mM)

X2-G (mM)

X3-G (mM)

Xyl-Rha-GalA-Xyl (mM)

Total (mM)

Average (mM)

Stdev

 

No enzyme

0.0

0.0

0.0

0.0

0.0

0.0

 

CMX00_3a

2.9

0.1

1.4

0.2

0.6

5.2

   
 

1.4

0.1

1.1

0.2

0.6

3.4

4.3

1.3

 

XynY

0.4

0.0

0.2

0.1

2.6

3.3

   
 

0.4

0.0

0.2

0.1

2.5

3.1

3.2

0.1

 

XynA

0.4

0.0

0.0

0.0

0.1

0.5

   
 

0.2

0.0

0.0

0.0

0.1

0.3

0.4

0.1

 
  1. Activity reported as µmol of reducing sugar released per hour per µmol of purified enzyme determined by oxime-NIMS as described in “Methods” section. Standard deviation indicated for the duplicate samples
  2. AFEX-SG AFEX-treated switchgrass, G1 glucose, G2 cellobiose, G3 cellotriose, G4 cellotetraose, P1 pentose (i.e., likely xylose), P2 pentobiose, P3 pentotriose, P4 pentotetraose, P5 pentopentose, P6 pentohexose
  3. aXyloglucan-derived oligosaccharides identified using abbreviations from [59]; X, Xyl–Glu; XG, Xyl–Glu–Glu; X2–G, Xyl–Xyl–Glc, X3–G, Xyl–Xyl–Xyl–Glc