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.
Keywords from Image Description:
PDB EBI. Alpha and beta proteins ab Cystatinlike NTFlike Association domain of calcium or calmodulindependent protein kinase type II alpha subunit CAMKA Association domain of calcium or calmodulindependent protein kinase type II alpha subunit CAMKA EBI June Association domain of calcium or calmodulindependent protein kinase type