Saraiva, LM, Salgueiro CA, da Costa PN, Messias AC, Legall J, van Dongen WMAM, Xavier AV.  1998.  Replacement of Lysine 45 by Uncharged Residues Modulates the Redox-Bohr Effect in Tetraheme Cytochrome c3 of Desulfovibrio vulgaris (Hildenborough). Biochemistry. 37(35):12160-12165.