Table 1. Identification of the B.subtilis glucose-repressive gene products on 2D gelsa.
Spot no. |
Sequence |
Protein |
Protein descriptionb |
CcpA dependencyc |
1 |
MKLXFNEATTLE |
IolI |
Inositol utilization (unspecified) |
– |
2 |
MDKTISVIGMPM |
RocF |
Arginase |
+ |
3 |
MNIHEYQGKEVL |
SucC |
Succinyl CoA synthetase β chain |
+ |
4 |
TALSKSKEIIDQ |
RocD |
Ornithine aminotransferase |
+ |
5 |
MRMVDIIIKKQN |
Pdp |
Pyrimidine nucleoside phosphorylase |
+ |
6 |
LVKEAGKPXKEA |
RocA |
Pyrroline-5-carboxylate dehydrogenase |
+ |
7 |
AEIRKLKNYING |
IolA |
Oxidative decarboxylase in inositol
catabolism |
– |
8 |
MNSVDLTADLXA |
PckA |
Phosphoenolpyruvate carboxykinase |
– |
9 |
MKKAKLGKSDLQ |
IolS |
Inositol catabolism (unspecified) |
– |
10 |
SVFINKDTRVIV |
SucD |
Succinyl CoA synthetase α chain |
+ |
11 | TATIIDGKEXAR | FolD | Methylenetetrahydrofolate dehydrogenase | + |
aTotal protein from strain 1A250 (wild-type) cells grown to A600 = 1.0 in DSM without glucose was subjected to preparative 2D gel electrophoresis, as described in the text. The proteins in the spots corresponding to those shown in the left panel of Figure 1A were extracted and sequenced. N-terminal sequencing of the proteins in the spots allowed us to identify the B.subtilis genes encoding these products by means of the SubtiList worldwide web server (http://www.pasteur.fr/Bio/SubtiList) with the FASTA program (48).
bThe protein descriptions were mainly obtained from the SubtiList World Wide Web server.
cThe CcpA dependency of the glucose repression of the synthesis of each protein was obtained from the results (Fig. 1B).