Figure 4.
Titration of pyruvate onto (A) H49A, (B) H49N, (D) H299A, and (E) H299N monitored by CD under anaerobic conditions. Insets illustrate enzyme-subtracted spectra for H49A and H299A. Overlay of CD spectra of (C) H49A variants and the wild type or (F) H299 variants and the wild type in the presence of a saturating pyruvate concentration indicating a lower signal intensity for LThDP accumulation on all variants compared to the wild type and on Ala variants compared to Asn variants at the same position.
