• Protein Structure What ад: the lcvc:ls of protcin structurc and whar rolc do functional groups play? Why? Proteins accomplish many cdlular tasks such as facilitating chcmica.1 rcactions, providing structure, and carrying information from onc ccll to anothcr. How а protcin chain coils up and folds dctcrmines its threc-dimcnsional shape. lts shapc will, in шrn, dctcrminc how it intcracu with orhcr molcculc::s and thus performs irs function in thc ccll . • 1. Examine the amino acids in Model 1. а. Circle an aminc group in thc diagrarn. Ь. Draw а triangle around а carboxylic .cid (carЬoxyl) group. 2. How arc thc amino acids similar ro one another� М\ f\мino С\едс\!. \'\OI\IZ o.m1nt "iVЪ"V�, есел,<>оJ'ЧI � l"<>"\>S; lot\ difkк\Л.r "½ � 1 "'';>'""Cov.'\Oof' �"'uf ,-�,:\ "- 'i,,"'\�lm"1r-"' \»no..u,I -tx, � е<�\ С<>УРО(), t,s+t.-<�t., 3. How are rhe a.mino acids different from one another? '"4\ w-�· il\"oц� �\ О(' ()\-�,щ,1- ("l"cor,. c.,..,+.,o1'l,or б"""\½ R с,:;� С.11:: д.1,�� Protein Structure \_-SI,\,<. G\r,.l,'i, 1 Fill in the following chari шing wha, )'t> u've /earncdr.rom Мodds Sttucture Bond (1) or interactioiu holding thc structun, togetЬ.er Short descripcion 1 3. Nu.mber of pofypeptide ch�n.s involved Primary 1 1 Secondary 1 Tcrtiary • 2 ог шоrс Quatern:uy ReadТbls! res or rn'o ways to disrupc rhe shapc of а protein. High rempc::raщ He.ating and changjлg рН lcvcls arc break hydrogen Ьonds, ionic Ьonds, from the narural environmenr of rhc procein wiJI рН Jcvels rhac v.uy d. Тhis undisturЬc rc:ma.in usuaJly s. Covalcnr Ьonds wiH disulfidc: bridgcs, and ЬydropЬobic interaction of а protcin is aJled dcnaturing. process of desrroying thc: sh.apc 24. Which of chc four answer. 8 lcvels of procein s-trucwrc: is maincained afrer dcлaruring? Explaiл your 1 µrension Questions 27· Jf а muration in thc DNA of • • • <1.11 org;mism resu 1 ts •1n the replacement of an amino . acid conca1шng а Р0 I а R -group ith :mocher :amino aci � d contai11in а nonpolar R-group, how migh[ chc struc �t t turc O :h е pro cщ Ье a.ffected? Addrcss rhe impact g оп all levels of thc protcin structurc in your answcr. 28. Egg whitcs arc primaгily composed of rhc protein albumin. Оле familiar cxample of thc denatur ing of protcins is thc differencc Ьerwecn thc albumin structure i n а raw egg versus а cooked cgg. Using what you know abour thc levcls of sпucrшc in protcins, proposc an exp lanation of chang c:s in albшпin (an d other proteins) that occur dшing cook.ing. 29. Prcdict what would happcn to thc c:gg whitc if а raw cgg wcrc placed in vineg:n. Explain your thinlcing. 10

Concepts in Biology Protein Structure Pogil

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