3 hydroxybutyric acid 1 3-Hydroxybutyric Acid 1 3HB oligomer 1 4,4'-diphenylmethane diisocyanate Acyltransferases 1 Article 1 Bacillus cereus 1 Chromatography, Gel 1 Culture Media 1 Escherichia coli 1 Ethylene Glycols 1 Isocyanates 1 Macromonomer 1 Magnetic Resonance Spectroscopy 1 Mass Spectrometry 1 Microorganisms, Genetically-Modified 1 Polyaddition 1 Polyurethane 1 Polyurethanes 1 Secretory Pathway 1 Secretory production 1 Spectroscopy, Fourier Transform Infrared 1 Thermography 1 acyltransferase 1 addition reaction 1 bacterial strain 1 bacterium culture 1 biosynthesis 1 chemistry 1 controlled study 1