Fig. 1.

Classification of the identified phosphoproteins in T. thermophilus HB27. The phosphoproteins were grouped by (A) cellular location and (B) biological function based on Gene Ontology terms as assigned by Blast2GO. Hypothetical proteins were grouped into the “Unknown” category of the pie chart. C, this simplified diagram shows the central metabolic pathways that link glycolysis and the tricarboxylic acid cycle for glucose. Other carbohydrates can also be metabolized, via glucose-1-phosphate or glucosamine-1-phosphate. The shaded boxes show the phosphorylated enzymes identified in this study.