What happens if an amino acid sequence has no stop codon? How many codons are needed to specify three amino acids? What codon starts protein synthesis? Fill in the template strand DNA sequence, mRNA codons, tRNA anticodons, or amino acid sequence. ...
There are 20 amino acids that are encoded into proteins by the codons on a strand of mRNA. This means that there must be a minimum of 20 codons...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
which may be found in polypeptides or engineered as an integral part of their sequence. Typically, protease cleavage sites may be defined in terms of amino acid sequences which are susceptible to cleavage by a protease. For
Aminoacidsina polypeptidechainare codedbygroupsofthree nucleotidesinamRNA SimpleSimplecalculationcalculation indicatedthatthreeormore basesareprobablyneeded tospecifyoneaminoacids; GeneticstudiesGeneticstudiesofinsertion, deletion,andsubstitutionmutants showedcodonsforaminoacidsare ...
UAA,UAGandUGA=termination,orstop,codons Thecodeisdegenerate Morethanonecodoncanspecifythesameaminoacid Forexample:GGU,GGC,GGAandGGGallcodeforlysine Inmostinstances,thethirdbaseisthedegeneratebase Itissometimereferredtoasthewobblebase Thecodeisnearlyuniversal ...
specifyhownucleotidesequenceofan mRNAistranslatedintotheamino acidsequenceofapolypeptide.The nucleotidesequenceisreadastriplets calledcodon. Thegeneticcode Thecharacteristicsofgeneticcodes 1.Thegeneticcodeisatripletcode. 4 3 =64>20 2.Degenerate(简并性) 4 3 =64>20;4 2 =16≈20;第三位Wobble (摇摆性)...
c. contains a sequence of triplet codons that specify amino acids. d. all of the choices. ___ 31. Peptide bonds link a. nucleotides in rRNA. b. nucleotides in a tRNA. c. nucleotides in an mRNA. d. amino acids in a polypeptide. ___ 32. RNA polymerase reads nucleotide...
oftheA,G,C,U.Proteinsynthesisinalleukaryoticcellsperformsinthe cytoplasm.Thegenesbytheircodonscontrolamino-acidsequencesinpro- teins.Itisobviousthatthereare4×4×4=64possiblecodons.However61 ofthemspecifythe20differentamino-acidsand3correspondtostop-codons, ...
regulatedbyattenuation.Thefirsteightcodonsoftheleader specifyapeptidethatinhibitspeptidyltranseraseinvitro. Functionallysimilar,butlessinhibitory,peptidesareencoded bytheleadersofCm-induciblecatgenes.However,thecatand cmlA oigsequencesareunrelatedandspecifyproteinsof ...