Intro to Cellular Biology (7)

Esoneprotein differentfrom another justlikethe

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Unformatted text preview: ( justlikethe differentorderof ourDNAiswhat makesusdifferent fromoneanother. Thissequenceis encodedintheDNA whereonegene encodesforone protein Type Example Amylase Promotesthebreakdownof starchtothesimplesugar glucose Structural Keratin Hair,wool,nails,horns,hoofs, tendons,cartilage Hormone Insulin Regulatesuseofbloodsugar Transport Hemoglobin Carriesoxygenin blood  Immune Antibodies Ridthebodyof foreignproteins Toxins Neurotoxin Blockerofnerve functions (e.g.venom) Proteinsarethemajor structuralcomponentsof bodytissues Theyarelongstrandsofaminoacidslinkedtogether Thesearethethreenucleicacids,whichtogethermakecodons,which determinewhattheaminoacidis,andstrungtogether,makeproteins  » Enzymesaretypesofproteinsthatserveascatalysts, initiatingchemicalreactionsinthebody,suchasinDNA replication » Proteinsdifferaccordingtothenumberofaminoacids andthesequenceinwhichtheyare arranged(likeDNA)  Function Enzymes »   » Hemoglobin isfour chainsof aminoacids Part9(8:07)  NOVAOnline|CrackingtheCodeofLife| http://www.pbs.org/wgbh/nova/genome/program.html Mutationscanleadtoincorrectproteins. ThismayleadtoillnessessuchasCystic Fibrosis TurntotheEndofthePDFForQuestionsonPart9   » 1.Whatarethesymptoms/effectsofcysticfibrosis(CF)?      » 2.Generally,whoismostaffectedbyCF~ageandancestry?    » 3.WhatnewtherapyisbeingusedtotreatCF?Howdoesit comparetotheoldertherapy? » 4.Whatisaprotein?Howdotheydefineaddescribeit?How isitshaped?     »     » 6.WhatistheproblemwiththeCFprotein?Meaning,what goeswrongthatcreatesCF? 4 9/25/2011 yourbasicbodyfunctioning. So,howaretheymade? (Thisiscertainlycoveredinyourtextbook)  Ribonucleicacid Itisconsideredtobemoreprimitive (oldermorebasic,andmoresimple) thanDNA Singlestrandofchemicalbases ThymineisreplacedbythebaseUracil inRNA  RNAcantravelintoand  outsidethecellnucleus~thisiswhyit issoimportantandfunctional  (itisespeciallyimportantforprotein synthesis)   totheribosometocreate proteinsforthebody   Fromwww.accessexcellence.org PhotoofRNAvs.DNA Thisiswhenproteinsare madefrominstructions encodedinDNA Howdoesprotein synthesis happen? DNAstrand(usingwhich bases?)duringtranscription (nextslide) ThemRNAstrandmovesout ofthenucleus Theribosomemovesalong themRNAstrand,where free ­floatinganti ­codons matchwithacodonpair Thisformsachainofamino acids.Whencompleted,it foldsintoa3dimensional protein    5...
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This note was uploaded on 09/14/2013 for the course ANTHRO 101 taught by Professor Riley during the Spring '12 term at San Diego State.

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