Proteins Ap Biology

Kirstie Javier AP Biology Period 4 November 14, 2011 Proteins Proteins ar biochemical compounds consisting of atomic number 53 or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. Some types of chemical connects/ interactions atomic number 18 disulfide bonds, hydrogen bonds, bean bonds, and hydrophobic interactions. Disulfide bonds form when two one C molecules join in concert to form a bond between their two sulfur atoms. Such bonds cross-link polypeptide durance or portions of chains. Because they be non cold covalent bonds, they ar actually strong bonds and not easily broken. They are considered to be discontinue of primary structure, although they do contribute to the three-dimensional conformation of the proteins. heat content bonds form when a hydrogen atom is covalently bonded to one disconfirming atom (usually group O or nitrogen) and is simultaneously attracted to other electronegative at om. A aerated R-group in one ruin of a polypeptide chain tidy sum attract an oppositely charged R-group in another part of the chain. The force of such(prenominal) an static attraction is the ionic bond, sometimes called a sodium chloride linkage, salt bridge, or electrostatic bond. Non polar R-groups go to cluster together in water. These weak associations are called hydrophobic interactions. When the polypeptide chain folds, the hydrophobic R-groups tend to be stiff to each other in the interior of the folded chain, whereas hydrophilic R-groups tend to be on the outside, attracted to water. The draw below illustrates some hydrophobic interactions between R-groups. Hydrophobicity of various amino acids. About 12 percent of your entire body jackpot is protein. All types of protein are do from amino acids. Some of these are essential, meaning they cannot be make by the body and thence must be eaten. Others are produced in the body, so they are still very fundamental; j ust not essential. Without protein, some(pr! enominal) body functions wouldnt occur, such as muscle contractions....If you motivation to get a entire essay, order it on our website: OrderEssay.net

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