(A) Arginine, (B) Cysteine, (C) Proline, (D) Asparagine. For each reaction, information in the circles indicates whether the enzyme catalyzing the reaction is seen in transcriptomic (upper left quarter-circle) and/or proteomic (lower left quarter-circle) data, as well as its presence or absence in the cell line specific models generated by GIMME (right semi-circle). The square shows whether the enzyme catalyzing the reaction is seen in transcriptomic data from a mix of C. griseus tissues. Data used is available in Supplemental Data S4. Metabolite abbreviations are as follows: CITR-citrulline, ASP-aspartate, ARGSUCC-argininosuccinate, ARG-arginine, SER-serine, HCYS-homocysteine, CYST-cystathionine, ORN-ornithine, GLU-glutamate, GLU5SA-glutamate 5 semialdehyde, PRO-proline, GLN-glutamine, ASN-asparagine.