1.4 Proteins Completed PDF

1.4 – Macromolecules: Proteins 3. PROTEINS Structure: Consists amino acids linked together by _____________________ bond to form one...

1.4 – Macromolecules: Proteins 3. PROTEINS Structure: Consists amino acids linked together by _____________________ bond to form one peptide or more ____________________________ folded and coiled into unique conformations. polypeptide Functions: Proteins serve a huge variety of functions in the body including, but not limited to, catalysts, transportation, structural support, body movement, messaging and signaling, and defense against infection. The body is predicted to have tens of thousands of different types of proteins. 20aminoacids Monomer: Amino Acids carboxyl carbonbackbone Amino Froperty changes or aa Polymer: Polypeptides The PEPTIDE BOND, formed through a condensation reaction c terminus N terminus in c c H2O H H n c ion 17 4 Structural Levels: m b.ie chains globular interactions between hydrogenbonding R groups dfffnaa.fi betweenbackbone hydrophobichydrophilic charged Proteins are either fibrous (a) or globular (b): PROTEIN PRACTICE QUESTIONS 1. Draw a representation of an alpha-helix and a beta-sheet. What forces hold these secondary structures in their form? Secondarystructures are held in place by hydrogen bondingbetween the amino acid backbone C helix b sheet 18 2. Why is it important to eat “complete proteins”? There are a aminoacids that we can't synthesize so we must eat the se 3. Show the formation of a peptide bond between Alanine and Serine. in E on in a H2o a in a i E Textbook Questions: pg.28 #19, 22, 23. 19