Part A. Saying it with DNA- Protein Synthesis Having studied the process by whic
ID: 148965 • Letter: P
Question
Part A. Saying it with DNA- Protein Synthesis Having studied the process by which DNA directs the synthesis of proteins you should be ready to DNA secret" messages. To do this, you must follow the procedure of protein synthesis as right now in your cells. Practice these steps by following and finishing the partially this is taking place solved message below. STEP 1: "Build" the mRNA molecule, matching the RNA nucleotides to the DNA nucleotides properly of simplicity, it will be assumed that this mRNA is bacterial; there are no letter by letter. (For purposes introns to cut out!) STEP 2: Figure out the tRNA triplets (codons) that would fit the mRNA triplets (letter by STE and amino acid abbreviation f each letter). P 3: Look up each tRNA codon in the tRNA Dictionary (below), and find the corresponding symbol or that codon. Record that one-letter symbol (and its amino acid) below codon. "Spe" "space". If you have done this correctly, the symbols should spell out a meaningful message in English Remember, C always pairs with G, G always pairs with C, A pairs with T or T pairs with A (in DNA). In RNA, C always pairs with G, G always pairs with C, A pairs with U or U pairs with A Clues: C& G are curved letters; A & T are angular U is used in RNA in place of T When you finish the sample message below, decode the messages in the next section PARTIALLY SOLVED MESSAGE GIVEN: DNA code message--> GA TAG AAA CTT ACT TAG AGC ATT CCT GCCCTCGA TGC ATC SOLUTION (steps 1-4) 1. mRNA (built to match the DNA message, letter for letterCUU AUC UUU GAA UGA AUC UCG.. 2. tRNA (determined by matching letters (bases) with those in mRNA)GAA UAG AAA CUU ACU UAG. 3. Amino acids carried by each tRNA (according to dictionary, below(L)eu(D)so(F)Phe(E)Glu soExplanation / Answer
GIVEN:
DNA: GAA TAG AAA CTT ACT TAG AGC ATT CCT GCC CTT CGA TGC ATC
SOLUTION:
1. mRNA: CUU AUC UUU GAA UGA AUC UCG UAA GGA CGG GAA GCU ACG UAG
Explanation: The formation of RNA from DNA takes place through a process called transcription. In this process, RNA polymerase starts adding the ribonucleotides from the 3' end of the template DNA strand. In RNA there are four types of nitrogenous bases and these are Adenine, Guanine, Cytosine, and Uracil (in RNA, thymine is replaced by uracil). Adenine base pairs with uracil and guanine base pairs with cytosine.
2. tRNA: GAA UAG AAA CUU ACU UAG AGC AUU CCU GCC CUU CGA UGC AUC
Explanation: Using the codons of m-RNA, a chain of a polypeptide is produced with the help of t-RNA and ribosome. This process is called Translation. Anticodon is a three-nucleotide sequence that recognizes the codon by base pairing with the mRNA. tRNA carries the anticodon.
3. Amino acids carried by each tRNA: (L)eu(I)so(F)Phe(E)Glu (-) (I)so(S)er (-) (G)ly(R)Arg(E)Glu(A)la(T)hr (-)
Explanation: Using the mRNA sequence, the chain of a polypeptide is produced by the process called translation. We can get the information about the codons for any specific amino acid from the table of the genetic code.
4. Symbols of amino acids: L I F E - I S - G R E A T -
Explanation: These are the one-letter code for each amino acid.