This image of RNA Polymerase by RCSB PDB's Maria Voigt was selected as a national finalist in the 2019 Wiki Science Competition in the United States. The jury selected 36 finalists across six categories from 1,144 submissions.
RNA polymerase (purple) is a complex enzyme at the heart of transcription. During this process, the enzyme unwinds the DNA double helix and uses one strand (darker orange) as a template to create the single-stranded messenger RNA (green), later used by ribosomes for protein synthesis. From the RNA polymerase II elongation complex of Saccharomyces cerevisiae (PDB Structure 1i6h) as seen in PDB-101's What is a Protein? series.