What molecules are involved in transcription?

RNA poylmerase is the enzyme involved in transcription. It plays a pivotal role in the synthesis of RNA from a DNA template, making it essential to the gene expression that occurs in all known life.

Enzymes Transcription: Transcription factors (eukaryotes), RNA polymerase

Enzymes Translation: initiation factors, elongation factors, termination factors

Molecules transcription: mRNA, DNA

Molecules translation: ribosomes, tRNA, mRNA, GTP (energy source)