1 In the All or part of the file name box, type officeav.dll. 2  In the Look in box, click Local Hard Drives. 3  Click Search. When the search result is displayed in the right pane, note the path of the Officeav.dll file.  Locate the Officeav.dll file, right-click officeav.dll, and then click Rename.
The hair shaft made of a protein called keratin is tough and resistant to wear and tear. Eighteen amino acids make up the keratin of which the most abundant is the cysteine. It gives the hair much of its strength. The middle layer of the hair is the cortex. It is made up of polypeptide chains that are cross-linked with each other, by three different types of side bonds.
Answers. Best Answer: Sulfur is found in nearly all proteins-it is part of the amino acids methionine and cysteine. Keratin, which comprises hair, nails, and eyelashes, among other things, contains a lot of cysteine (human hair is apparently used as an industrial source of cysteine).One important biochemical function of sulfur is its ability to bind metal ions.hiol groups (the chemical group containing sulfur in methionine and cysteine) can react with each other to form disulfide bonds. These bonds help control the shape of proteins.