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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Biomaterials. 2010 Oct 28;32(4):969–978. doi: 10.1016/j.biomaterials.2010.09.075

Table 1.

Proteins Used in Measurement of Adsorption Isotherms by Solution Depletion and QCM

Solution Depletion QCM Protein Dimensions
Protein Molecular
Weight
(kDa)		 Vendor Form
(Purity)		 Vendor Form
(Purity)		 Hydrated
Molecular
Radius
(nm)		 Radius Ratio to
HSA
(Dimensionless)
Human Serum Albumin (HSA) 66.3 Sigma Aldrich Powder (96–99%) Sigma Aldrich Powder (96–99%) 3.5 1
Fibrinogen (Fib) 341 Sigma Aldrich Powder (80% clottable) Sigma Aldrich Powder (80% clottable) 4.7 1.3
Immunoglobulin G (IgG) 160 Sigma Aldrich Powder (>95%) Sigma Aldrich Powder >95% 6.1 1.7
Immunoglobulin M (IgM) 970–1000 Scipac (UK) Solution (2.2 mg/mL >96%) MP Biomedicals Solution (5 mg/ml >95%) 8.7 2.5

Notes: Hydrated protein radius given by R = 1.3rv where rv = 6.72×10−8 MW1/3 in cm for MW in kDa.