144 



catabolic dehydroquinases . Table 7-2 shows each pairwise 

 comparison of N. tabacum AroD«E with its homologues (Gap 

 program) . 



Table 7-2. Pairwise comparisons of S-protein with its 

 homologues . 











Percent 









Organism 





DQT 











SDH 





and Gene 



Identi 



ty Similari 



■ty 



Identi 



ty Similarity 



Sce-Arol 



29 





53 







28 





56 



Eni-AroM 



24 





52 







27 





51 



Eco-AroD 



30 





52 







- 





- 



Eco-AroE 



- 





- 







31 





55 



Sty-AroD 



29 





51 







- 





- 



Efa-AroD 



34 





54 







- 





- 



Bsu-AroD 



32 





53 







- 





_ 



Ncr-Qa-lS 



22 





44 







30 





53 



Eni-QutR 



21 





46 







26 





47 



Eni-QutB 



- 





- 







28 





53 



Ncr-Qa-3 



- 





- 







26 





50 



Eco-URF 



- 





- 







36 





61 



StU-MDH 



- 





- 







23 





51 



Nta-CDH 



- 





- 







21 





47 



NAD (P)H-binding proteins often share a motif (Rossman 

 fold) dominated by glycine or other residues with small 

 sidechains such as alanine (72) . Table 7-3 shows a 

 comparison of this region in the organisms compared in this 

 dissertation with a number of others recovered by the GCG 

 Blast program. The S-protein fits the NADPH binding motif 

 perfectly with GxGxxAxxxA (72) . 



A survey of some chloroplast transit peptides 



-•1 



