Figure 3

Intracellular proteome of A. niger grown on xylose or maltose. Comparative analysis of the intracellular proteome of A. niger AB1.13 grown to late exponential/early stationary phase in bioreactor cultures on defined medium with xylose or maltose as carbon substrate. Dual-channel image; orange and blue spots correspond to proteins which are strongly upregulated in the presence of xylose and maltose, respectively. Black spots represent proteins which are found in both cultures. Characteristics of proteins indicated by arrows are discussed in more detail. The orientation of the isoelectric focussing gel is indicated and molecular mass standards are given on the left. The framed insert indicates the section which is shown in more detail in Fig. 5. The 2-D gel images of the intracellular proteome of A. niger AB1.13 from xylose and maltose grown cultures with all identified proteins on interactive and searchable 2-D gels are available as Additional files 3 and 4, respectively. The complete list of proteins from the intracellular proteome of A. niger AB1.13 growing either on xylose or maltose, which have been identified on 2-D gels and classified into functional categories, is found in Additional file 2. A detailed list of all intracellular identified proteins showing significant changes in abundance depending on the carbon substrate is available in Additional file 5.