Table 1.

MWC and derived parameters for Carcinus maenas hemolymph with 0, 10 and 50 mmol l–1 L-lactate at 10°C

[L-lactate] (mmol l–1)pHP50 (mmHg)Pm (mmHg)n50nmaxlogKTlogSElogKRlogSElogLq * ΔG (kJ mol–1)
A
   07.837.817.833.43.4–1.96510.051690.14830.08794.69904.5111.39
   107.854.664.692.62.6–1.38540.08390.01280.10103.19804.677.51
   507.853.003.112.02.0–1.45890.28940.09030.04551.87273.227.45
B
   07.837.697.703.23.2–1.98610.05050.20550.07754.3670411.84
   107.854.634.672.42.4–1.43640.07000.04950.08172.873947.90
   507.853.003.102.22.2–1.23140.06040.07080.03472.267146.77
  • SE, standard errors (of KT and KR values); for other abbreviations, see text

  • * The MWC model was fitted to the data with q (the number of interacting O2-binding sites) floating (A) or fixed at 4 (B)