Table 1. Differentially expressed proteins identified under each gravity growth condition by 2-DE and MALDI-TOF MS.

^a2-DE, two-dimensional gel electrophoresis; MALDI-TOF/TOF MS, matrix-assisted laser desorption ionization time-of-flight mass spectrometry; MW, molecular weight; MP, ratio of matched peptides; SC, sequence coverage.

^b‘+’ Up-regulation, ‘−’ down regulation; 1.5-fold change was set as the cut-off for differential protein expression.