When alpha-glucose molecules are joined chemically to form a polymer starch is formed. When beta-glucose molecules are joined to form a polymer cellulose is formed. Humans are unable to digest cellulose because the enzymes to breakdown the beta acetal linkages are not found in vertebrates. Some ...
Biochemistry 33(4), 885- 893.Shearwin KE, Perez-Ramirez B, Timasheff SN. Linkages between the dissociation of alpha beta tubulin into subunits and ligand binding: the ground state of tubulin is the GDP conformation. Biochemistry. 1994; 33 (4):885–893....
Beta Chain refers to the 111 amino acid chain that is part of the structure of certain proteins, such as LH, hCG, and TSH, and is also present in the two forms of rhFSH, follitropin alpha, and follitropin beta. It confers biological activity and is noncovalently linked to other chains...
Answer to: Compare and contrast the molecular structures of alpha helices and beta sheets in proteins, including at least two similarities and two...
Galactosidases are a group of glycosidic enzymes that specifically catalyze the hydrolysis of galactosidic linkages in various oligosaccharides. There are two types of galactosidases: a-galactosidases and β-galactosidases, depending on the configuration of the anomeric carbon atom of the substrate mole...
The stereochemistry of the glycosidic linkages was determined by 3J(H1,H2) through 1H-NMR and/or 1JC1,H1 through gHMQC 2-D NMR (without 1H decoupling). The smaller coupling constants of 3J(H1,H2) (around 3 Hz) for the galactosides indicate α linkages and larger coupling constants 3J...
beta-alpha-beta motif Protein motif comprising a beta strand-loop-helix-loop-strand arrangment, with the strands lying parallel. beta-amylase A terminal amylase (EC.3.2.1.2) that cleaves maltose units from the non-reducing ends of starch, glycogen and related polysaccharides. beta amyloid A frag...
Once the ligand attachment points have been chosen, one identifies the types of chemical linkages that are possible at those points. The most preferred types of chemical linkages are those that are compatible with the overall structure of the ligand (or protected forms of the ligand) readily and...
Dunn, Allosteric linkage between beta-site covalent transformations and alpha-site activation and deactivation in the tryptophan synthase bienzyme complex, Biochemistry 34 (1995) 6552-6561.C.A. Leja, E.U. Woehl, M.F. Dunn, Allosteric linkages between beta-site covalent transformations and alpha-...
In general, the light and heavy chains are covalently bonded to each other, and the “tail” portions of the two heavy chains are bonded to each other by covalent disulfide linkages or non-covalent linkages when the immunoglobulins are generated either by hybridomas, B cells or genetically ...