Which codon is the code for the amino acid histidine (His)?
Messenger
Second base in codon
RNA Codons
с А
UUU) UCU
VAU) Tyr UGC } cys
UUC Pneu
Ser
UUA 1 UCA UAA Stop UGA Stop
UUG) Le
UCG UAG Stop UGG Trp
CUU CCU CAUT CGU
CUC CCC CAC
) Pro
Arg
CUA
CCA
CAA CGA
CUG CCG CAG
AUU ACU AAU) AGU)
Se
AUC) lle
AAC AGC)
AUA ACA
AGA)
Lys
AUG Start Met ACG AAG) AGG)
GUU) GCU
GGU
GUC
GCC
GAC) GGC
Val
Ala
Gly
GUA
GCA
GAA GGA
GUGI GCG GAG GGG!
CGC
Leul
First base in codon
CGG
Folcloruluwu co bloku
Third base in codon
Asn
ACThr
AAA!
Arg
GAU ASP
Glu

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein