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Biochemistry (382)
BCH210H1 (352)
Lecture 4

Lecture 4 Text Notes protein structure

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Department
Biochemistry
Course
BCH210H1
Professor
Stavroula Andreopoulos
Semester
Summer

Description
Protein Structure - fibrous proteins – have simple linear structures – insoluble in water - globular proteins – spherical shape – very soluble in water - membrane proteins – insoluble in aqueous solutions but can be solubilized in detergents - protein structure has four levels of organization - primary structure – amino acid sequence - secondary structure – polypeptide chain that arranged itself in helical/pleated segments - tertiary structure – polypeptide chains that bend and fold to assume a 3D conformation - quaternary structure – subunits, two or more interacting polypeptide units, interacting to form different structures – the kinds of subunits, the number of each, the ways they interact - information necessary to protein structure is contained in the primary structure
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