Table 1 Effect of LiP-SMap metabolites on F/SBPase activity and thermal stability in vitro.

From: Metabolite interactions in the bacterial Calvin cycle and implications for flux regulation

Effector (mM)

LiP-SMap interaction

Kinetics change

Tm change

syn-F/SBPase

  Acetyl-CoA (2)

Yes

Not significant

Not significant

  AMP (0.25)

Noa

Inhibit

Increase

  Citrate (5)

Yes

Inhibit

Decrease

  GAP, +DTT (0.5)

Not tested

Stimulate

Increase

  GAP, −DTT (0.5)

Yes

Inhibit

Not significant

  NADPH (3)

Yes

Inhibit

Not significant

  G6P (2)

No

Not significant

Not tested

cn-F/SBPase

  AMP (0.25)

No

Inhibit

Increase

  GAP, +DTT (0.5)

Not tested

Stimulate

Not significant

  GAP, −DTT (0.5)

Yes

Not tested

Not significant

  NADPH (3)

Yes

Inhibit

Increase

  G6P (2)

Yes

Stimulate

Not significant

  1. Changes in kinetic parameters were determined by enzyme kinetic assays. The kinetic effect of a metabolite was considered significant for p > 0.05 (comparing kinetic parameters) and a maximum change in rate >20%. Changes in melting temperature (Tm) of more than 2 °C were considered significant.
  2. aInteraction with AMP q = 0.056.