Fig. 6From: Formaldehyde formation in the glycine cleavage system and its use for an aldolase-based biosynthesis of 1,3-propanediolEffect of SHMT on formaldehyde production in the GCS reaction. R1 indicates a GCS reaction mixture as specified in the Materials and Methods section. R2 refers to a reaction mixture similar to R1 with the addition of SHMTBack to article page