text: Yo, listen up, I got a story to tell,
  'Bout disulfide-bond formation, it rings the bell.
  Dsb family of proteins, that's the crew,
  Foldin' secreted proteins, they know what to do.
  
  In bacteria, Gram-negative, they take the lead,
  Introducin' disulfide bonds, fulfillin' the need,
  DsbA in the periplasm, holdin' it down,
  Makin' sure them proteins fold proper and sound.
  
  But check it out, in E. coli, we got DsbE,
  Reduction of disulfide bonds, it's the key,
  Cytochrome c maturation, that's the game,
  DsbE's in charge, bringin' it to fame.
  
  Now shift gears, let's talk 'bout Mycobacterium tuberculosis,
  DsbE and DsbF, they're the real thugs,
  Structures been determined, they got it locked,
  But here's the twist, they fold proteins when rocked.
  
  Unlike E. coli's DsbE, they got the skill,
  Oxidatively foldin' proteins, they fulfill,
  Now in this study, we got a new player in town,
  Corynebacterium diphtheriae, let's break it down.
  
  Crystal structure determined, it's a sight to see,
  Thioredoxin-like domain, CXXC actively,
  Comparin' with M. tuberculosis DsbF, that's the aim,
  Understandin' C. diphtheriae's function, it's the game.