DNA is not decoded onto anything in protein synthesis. Instead, DNA is transcribed into a molecule called messenger RNA (mRNA). This mRNA then carries the genetic code from the DNA to the ribosomes, where it is translated into a protein.

Here's a breakdown of the process:

1. Transcription: DNA is copied into mRNA in the nucleus.

2. Translation: The mRNA moves out of the nucleus and into the cytoplasm, where it encounters ribosomes.

3. Ribosomes read the mRNA codons (three-nucleotide sequences) and use them to assemble amino acids into a specific protein.

So, the genetic code from DNA is transcribed onto mRNA and then translated into a protein by ribosomes.