Deciphering the influence of the [4Fe–4S] cluster of tRNA thiolation enzymes on tRNA binding

TABLE 1.

Kd values of the protein/RNA complexes studied

Complex Kd (µM)a Figure
apo-MmTtuI/MmtRNALys 0.63 ± 0.1 Figure 2B
apo-MmTtuI/MmtRNALys +AMP-CPP 0.55 ± 0.08 Figure 2C
apo-MmTtuI/MmtRNALys no Mg2+ 2.2 ± 0.4 Supplemental Figure S3B
apo-MmTtuI/TLYS41A 1.9 ± 0.1 Supplemental Figure S3A
apo-MmTtuI/TLYS41A no Mg2+ 7.2 ± 1.4 Supplemental Figure S3A
holo-MmTtuI/MmtRNALys 0.5 ± 0.13 Figure 2E
holo-MmTtuI/MmtRNALys + AMP-CPP 0.7 ± 0.25 Figure 2F
apo-EcTtcA/EctRNAArg 3.5 ± 0.6 Figure 4
holo-EcTtcA/EctRNAArg  4 ± 1.5 Figure 4
  • aThe standard deviation values were calculated from three and two replicates for the experiments performed with the apo- and holo-proteins, respectively.

This Article

  1. RNA 31: 735-742