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. 2011 Dec 28;6(12):e29210. doi: 10.1371/journal.pone.0029210

Table 2. Na+ transport kinetic constants for NHE1 in Amphiuma RBCs stimulated to steady-state in isosmotic solution with 500 nM CLA, or mildly hyperosmotic (1.2×IR) solution ± CLA.

Treatment Km(mM Na+) Jmax (mmoles Na+/Kg dcs minute
Isosmotic (1×IR) NA 0.02±0.01*
Isosmotic (1×IR) + CLA 44.3±7.7 10.4±1.4
Hyperosmotic (1.2×IR) 43.3±36.8 3.4±1.4
Hyperosmotic (1.2×IR) + CLA 44.4±11.8 19.8±2.5

Kinetic constants are expressed as Km or Jmax ± SEM. Values for Km are similar in all 3 conditions, while Jmax is increased by CLA treatment relative to hyperosmotic medium alone. Estimated* (by hyperbolic curve-fit) Jmax activity in the unstimulated isosmotic condition is also shown.