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- Please select all answers that are TRUE about post translational modification of proteases including chymotrypsin. This process is irreversible. If the N-terminus of 16 is protonated, the oxyanion hole of chymotrypsin does not form in alpha-chymotrypsin. Trypsin cleaves chymotrypsinogen into pi-chymotrypsin. H57 is protonated until alpha-chymotrypsin is created. This process occurs in the stomach. MacBook Air V7 888 23: F4 F3 FR %Which statements are true? Explain why or why not.1 The consequences of errors in transcription areless severe than those of errors in DNA replication.2 Since introns are largely genetic “junk,” they do nothave to be removed precisely from the primary transcriptduring RNA splicing.3 Wobble pairing occurs between the first positionin the codon and the third position in the anticodon.4 During protein synthesis, the thermodynamics ofbase-pairing between tRNAs and mRNAs sets the upperlimit for the accuracy with which protein molecules aremade.5 Protein enzymes are thought to greatly outnum-ber ribozymes in modern cells because they can catalyzea much greater variety of reactions and all of them havefaster rates than any ribozyme.Discuss the key factors & mechanisms during co-translational translocation by which START TRANSFER and STOP TRANSFER sequences help the protein generate appropriate number of transmembrane regions with N or C terminal on the designated side of the plasma membrane.(NO PLAGIARISM)
- Post-translational modification of proteins refers to the covalent and enzymatic modification of proteins following protein biosynthesis. Give three (3) examples and briefly describe why the modification is important.i need definition for Posttranslational modifications for collagenMany blood clotting proteins undergo a post-translational modification in which specific glutamic acid residues (Glu) in the protein are converted to gamma-carboxyglutamic acid residues (Gla). See reaction scheme below. An example is the blood clotting protein Factor IX, which has 12 Glu in its N-terminus converted to Gla. This modification gives Factor IX the ability to bind calcium and phospholipid membranes. Bacteria do not have the enzyme required to convert Glu to Gla and therefore Factor IX proteins expressed in bacteria would not have the proper modifications. How might you engineer the translational apparatus of a bacterial cell line so that it produces Factor IX with Gla in the appropriate positions. How would you ensure that only the 12 Glu in Factor IX that are normally converted to Gla and not just all Glu (Limit 5-6 senetnces)?
- True or false: A fully assembled 70S ribosome is recruited to the mRNA just 5 ́ of the translation start site?Question 10. What molecule in the cell is the first to recognize the signal peptide as it is translated by the ribosome?Please help with all parts of A, B, C, D 2. You are studying the function of a messenger RNA named Genetixrox and want to label themRNA with a radioactive atom. Assume the mRNA is long and contains all four standardRNA bases. Assume that the cell cannot convert ribonucleotides to deoxyribonucleotides (orvice versa).A. Will you generate radioactive Genetixrox mRNA with 3H-threonine? Threonine is an aminoacid. Answer yes or no, and provide a one sentence rationale.B. Will you generate radioactive Genetixrox mRNA with 3H-adenosine triphosphate? Answeryes or no, and provide a one sentence rationale.C. Will you generate radioactive Genetixrox mRNA with 3H-deoxyadenosine triphosphate?Answer yes or no, and provide a one sentence rationale.D. Will you generate radioactive Genetixrox mRNA 12C-with adenosine triphosphate? Answeryes or no, and provide a one sentence rationale
- One single polypeptide chain (120 amino acid residues) is produced for protein A in prokaryotic cell. N-terminal amino acid is alanine in the chain of this protein. How many moles of ATP and GTP will be in use for this polypeptide chain synthesis? What post-translational modifications may be for this protein?8.4 Post translational modification The following diagram shows three different types of post translational modification that can occur in proteins. Proteolysis: Phosphorylation: Glycosylation: Cleaving of polypeptide chains The addition of phosphate groups to proteins The addition of sugar groups Label the diagram to demonstrate what type of post-translational modification has taken place to the protein chain. Translation Posttranslational processing eor What organelle is responsible for post translational modification?The tumor suppressor pRB also binds to and suppresses theactivity of retinoblastoma binding protein 2 (RBP2), ahistone demethylase that removes methyl groups from diand trimethylated lysines in histone 3. What is the possibleconsequence of an inactivating mutation in RB1 that causesan inability of pRB to bind RBP2?