This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
PDB rp EBI. All alpha proteins DNA or RNAbinding helical bundle Sigma and sigma domains of RNA polymerase sigma factors Sigma domain Sigma factor sigma FliA EBI rp November Sigma factor sigma FliA Files uploaded by Nichalp's script
Page 2023 Free-images.com. All images are Public Domain