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2.2 Cellulose-synthase-like genes

In contrast to synthases, glycosyl transferases are defined as enzymes that non-iteratively add glycosyl residues to backbone polymers. Whereas synthase activities are difficult to demonstrate in vitro, much less solubilize their activities for enzyme purification, several glycosyl transferases have been identified after solubilization and demonstration of specific transfer in vitro. Examples include the xyloglucan-specific glycosyl transferases for fucose and galactose residues that decorate xyloglucans of type I walls. These have been identified on the basis of mutants in which cell-wall fucosyl residues were underrepresented . A gene encoding a ?-xylosyl transferase that adds the first xylosyl residue of xyloglucan has also been deduced based on the identification of an ?-galactosyl transferase involved in the decoration of galactomannans. Most of the cell-wall glycosyl transferases annotated thus far are type II membrane, Golgi-resident enzymes, with single membrane spans orienting the catalytic domains into the lumen of the Golgi membrane. The gene families represented here are based on motif structure and amino-acid similarities described by Henrissat and represented at the Carbohydrate Active Enzymes web site. Readers should note that these classifications do not specify the monosaccharide transferred, as different monosaccharide transferases may belong to the same sub-class, and most of them have not been characterized.
COMBINED DENDROGRAM
  


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CESA Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At4g32410 CesA1            
At4g39350 CesA2            
At5g05170 CesA3            
At5g44030 CesA4            
At5g09870 CesA5            
At5g64740 CesA6 SALK_004587 10/12/05 wild(.xls)
mutant(.xls)
5 , 91
   
At5g17420 CesA7 SALK_029940 3/2/05 wild(.xls)
mutant(.xls)
4 , 70
   
At4g18780 CesA8            
At2g21770 CesA9            
At2g25540 CesA10            

 

CSLA Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At4g16590 CslA1            
At5g22740 CslA2 SALK_097773 3/2/05 wild(.xls)
mutant(.xls)
4 , 83
 
At1g23480 CslA3            
At2g35650 CslA7            
At5g03760 CslA9            
At1g24070 CslA10 SALK_023438 3/1/05

wild(.xls)

mutant(.xls)

4, 91
   
At5g16190 CslA11            
At3g56000 CslA14            
At4g13410 CslA15 SALK_106966 3/12/04 wild(.xls)
mutant(.xls)
4 , 71
   

 

CSLB Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At2g32530 CslB1 SALK_063361 3/2/05 wild(.xls)
mutant(.xls)
4 , 73
   
At2g32540 CslB2 SALK_067582 3/2/05 wild(.xls)
mutant(.xls)
4 , 61
   
At2g32610 CslB3 SALK_089904 3/2/05 wild(.xls)
mutant(.xls)
5 , 76
   
At2g32620 CslB4            
At4g15290 CslB5 SALK_133711 10/12/05 wild(.xls)
mutant(.xls)
5 , 78
   
At4g15320 CslB6            

CSLC Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At3g28180 CslC4            
At4g31590 CslC5            
At3g07330 CslC6            
At2g24630 CslC8 SALK_068939 3/2/05 wild(.xls)
mutant(.xls)
4 , 74
   
At4g07960 CslC12            

CSLD Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At2g33100 CslD1            
At3g03050 CslD3            
At4g38190 CslD4            
At1g02730 CslD5            
At1g32180 CslD6            

 

CSLE & CSLG Group
Gene Annotation Accession
Date Received
IR Spectra
 PCs, % Classified Likely Spectrotype Comments
At1g55850 CslE1 SALK_011984 10/12/05 wild(.xls)
mutant(.xls)
5 , 81
Yes
  
At4g23990 CslG1 SALK_002765 3/2/05 wild(.xls)
mutant(.xls)
4 , 69
   
At4g24000 CslG2 SALK_007425 3/2/05 wild(.xls)
mutant(.xls)
4 , 69
   
At4g24010 CslG3            

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