Figure 3

(a) Raman spectra of the control sample and CaCO₃ in the presence of ~2.5 μg·mL⁻¹ ESM-P and ESM-N proteins. (b) X-ray diffraction (XRD) patterns of the control sample and CaCO₃ in the presence of ~2.5 μg·mL⁻¹ ESM-P and ESM-N proteins with 2θ degree from 20 to 50.