1. Cicchillo RM, Baker MA, Schnitzer EJ, Newman EB, Krebs C, Booker SJ (2004) Escherichia coli l -serine deaminase requires a [4Fe-4S] cluster in catalysis. J Biol Chem 279:32418–32425
2. Ohtsu I, Wiriyathanawudhiwong N, Morigasaki S, Nakatani T, Kadokura H, Takagi H (2010) The l-cysteine/l-cystine shuttle system provides reducing equivalents to the periplasm in Escherichia coli. J Biol Chem 285:17479–17487
3. Ikeda M (2003) Amino acid production process. In: Scheper T, Faurie R, Thommel J (eds) Advances in biochemical engineering/biotechnology, vol 79. Springer, Berlin Heidelberg New York, pp 1–35
4. Leuchtenberger W (1996) Amino acids-technical production and use. In: Roehr M (ed) Biotechnology, vol 6. VCH, Weinheim, pp 465–502
5. Tamba Berehoiu RM, Popa CN, Popescu S (2013) Assessment of the E 920 additive (l-cysteine) in relation to some problems of modern food industry. In: Scientific papers series management, economic engineering in agriculture and rural development, vol 13, pp 413–418