Fig. 4

Two-dimensional gel electrophoresis of extracellular proteins of B. fibrisolvens 3071 grown on different substrates. The gels (a, b, c, d) show spots from cultivation on glucose, xylan, xylan + glucose, and xylose, respectively. The letters a, b, c, d, e, f indicate the identical spots, however with significantly different intensity, in the comparison of B. fibrisolvens 3071 grown on glucose/xylan, glucose/xylan + glucose, glucose/xylan + glucose, xylan/xylan+glucose, xylan/xylose, xylan+glucose/xylose, respectively. Annotations correspond to spot numbers in Table 1. The MW protein standard was in the range 11–245 kDa