Using Table 41 determine which of the following is an antico

Using Table 4.1, determine which of the following is an anticodon found on a tRNA that carriestyrosine (Tyr or Y) amino acid?

1) 5’-UAC-3’
	2) 3’AUG-5’
	3) 5’AUG-3’
	4) 3’-UAC-5

First position (5\'end) UUU Phe UUC Phe UUG Leu CUU Leu CUC Leu CUA Leu CUG Leu AUU Ile AUC Ile AUA Ile AUG Met M GUU Val GUC Val GUA Val GUG Val Nonpolar Table 4.1 Biology: How Life Works, Second Edition O 2016 Macmillan Education Third Second position position (3\'end) UGU Cys Lc UAU Tyr Y UCU Ser UGC Cys UCC Ser UAC Tyr UCA Ser UAA Stop UGA Stop UGG Trp G UAG Stop UCG Ser CCU Pro CAU His CGU Arg CAC His CCC Pro CGC Arg -R CGA Arg CCA Pro CAA Gln CGG Arg CCG Pro CAG Gin ACU Thr AAU Asn AGU Ser -s ACC Thr ACA Thr AAA Lys AGA Arg -R AAG Lys ACG Thr AGG Arg GAU Asp -D GGU Gly GCU Ala GAC Asp GCC Ala GGC Gly HG GAA Glu GGA Gly GCA Ala GCG Ala GAG Glu GGG Gly Polar Basic Stop codon Acidic

Solution

Ans. 2) 3\'AUG-5\'

ACCORDING to the table mrna codons for tyrosine are UAC and UAU both 5\' TO 3\'

Hence the trna anticodons are complimentary to the mrna codons ie. AUG and direction 3\' to 5\'