21. Because polyelectrolytes may be ?-lactoglobulin ( ?-Lg ), a globular protein , and pectin, an anionic polysaccharide. 22. Src homology 2 domains are globular protein modules present in a large variety of functionally distinct proteins. 23. In their model, the lipid bilayer was coated on either side with a layer of globular proteins . 24. The globular protein , bovine serum albumin ( BSA ), is a major component of fetal bovine serum. 25. All other serum globular proteins are globulins. 26. DNA-binding domain s globular proteins contain eight cysteines and allow for a tetrahedral coordination of two zinc ions. 27. Protein folding is key to whether a globular protein or a membrane protein can do its job correctly. 28. The mechanism for unfolding of globular proteins is necessarily general, but somewhat dependent on the amino acid sequence. 29. Ferritin is a globular protein complex consisting of 24 protein subunits forming a nanocage with multiple metal protein interactions. 30. The structure of the protein is predicted to be a globular protein with 2 transmembrane ( TM ) domains.