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Title: Could somebody explain the different levels of protein structure? Post by: msternke on Sep 12, 2012 Specifically outlining the differences between primary, secondary, tertiary and quaternary. Thanks.
Title: Re: Could somebody explain the different levels of protein structure? Post by: duddy on Sep 12, 2012 1. Primary: refers to the unique sequence of amino acids in the protein. All proteins have a special sequence of amino acids, this sequence is derived from the cell's DNA.
2. Secondary: the coiling or bending of the polypeptide into sheets is referred to the proteins secondary structure. alpha helix or a beta pleated sheet are the basic forms of this level. They can exist separately or jointly in a protein. 3. Tertiary: The folding back of a molecule upon itself and held together by disulfide bridges and hydrogen bonds. This adds to the proteins stability. 4. Quaternary: Complex structure formed by the interaction of two or more polypeptide chains. Title: Re: Could somebody explain the different levels of protein structure? Post by: duddy on Sep 12, 2012 http://highered.mcgraw-hill.com/sites/dl/free/0072943696/291136/protein_denaturation_final.swf
Title: Re: Could somebody explain the different levels of protein structure? Post by: micooo on Sep 13, 2012 I found a video on youtube that helped me quite a lot:
Protein Structure and Function - Part 1 (kristinagremski) |