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. 2019 Jul 24;9:10753. doi: 10.1038/s41598-019-47108-5

Table 4.

Peptide surface density estimation from monolayer thickness determined using ellipsometry.

Peptide surface density estimation
(ng/cm2)
Chain201D CEM7
CDI (3) 77 31
CDI (30) 123 62

The sources of error include the ellipsometric measurement and the estimation of the peptide weight density (formula 2 was proposed for crystals of proteins with a molecular weight higher than 7 kDa)38.