Rubrerythrin (RUBY) is a fusion protein containing an N-terminal diiron-binding domain (Pfam:PF02915) and a C-terminal rubredoxin-like domain. RUBY may play a role in oxidative stress. This entry represents the rubredoxin-like domain of RUBY and reverse rubrerythrin 1/2 from Clostridium acetobutylicum (RRBR1/2) [1-5]. RRBRs function as the terminal component of an NADH peroxidase when using NADH:rubredoxin oxidoreductase (NROR) as the electron transport intermediary from NADH to RRBRs and play an important role in the oxidative stress defense system of C. acetobutylicum [6].

1: Rubredoxin from Clostridium pasteurianum. Structures of G10A, G43A and G10VG43A mutant proteins. Mutation of conserved glycine 10 to valine causes the 9-10 peptide link to invert. Maher MJ, Xiao Z, Wilce MC, Guss JM, Wedd AG; Acta Crystallogr D Biol Crystallogr. 1999;55:962-968. PMID:10216292

2: Alternative metal-binding sites in rubrerythrin. Sieker LC, Holmes M, Le Trong I, Turley S, Santarsiero BD, Liu MY, LeGall J, Stenkamp RE; Nat Struct Biol. 1999;6:308-309. PMID:10201393

3: Modulation of the redox potential of the [Fe(SCys)(4)] site in rubredoxin by the orientation of a peptide dipole. Eidsness MK, Burden AE, Richie KA, Kurtz DM Jr, Scott RA, Smith ET, Ichiye T, Beard B, Min T, Kang C; Biochemistry. 1999;38:14803-14809. PMID:10555962

4: Crystal structure studies on rubrerythrin: enzymatic activity in relation to the zinc movement. Li M, Liu MY, LeGall J, Gui LL, Liao J, Jiang T, Zhang JP, Liang DC, Chang WR; J Biol Inorg Chem. 2003;8:149-155. PMID:12459910

5: Structural genomics of Pyrococcus furiosus: X-ray crystallography reveals 3D domain swapping in rubrerythrin. Tempel W, Liu ZJ, Schubot FD, Shah A, Weinberg MV, Jenney FE Jr, Arendall WB 3rd, Adams MW, Richardson JS, Richardson DC, Rose JP, Wang BC; Proteins. 2004;57:878-882. PMID:15468318

6: Pathway for H2O2 and O2 detoxification in Clostridium acetobutylicum. Riebe O, Fischer RJ, Wampler DA, Kurtz DM, Bahl H; Microbiology (Reading). 2009;155:16-24. PMID:19118342