Electronic Supplementary Material Engineering of vitamin prototrophy in Clostridium ljungdahlii and Clostridium autoethanogenum Florence J. Annan1, Bakir Al-Sinawi2, Christopher M. Humphreys1, Rupert Norman1, Klaus Winzer1, Michael Köpke3, Sean D. Simpson3, Nigel P. Minton1 and Anne M. Henstra1 1 BBSRC/EPSRC Synthetic Biology Research Centre, University of Nottingham, Nottingham, UK 2 University of New-South Wales (UNSW) Sydney, Kensington, Australia 3 LanzaTech Inc. Caption SBML files of iHN673 (Clostridium ljungdahlii) and iCLAU786 (Clostridium autoethanogenum) fully prototrophic metabolic models.