Clamp loader complex from bacteriophage T4

"A DNA clamp, also known as a sliding clamp, is a protein fold that serves as a processivity-promoting factor in DNA replication."
--http://en.wikipedia.org/wiki/DNA_clamp

Clamp loaders are protein complexes that open clamps and load them onto DNA. Provided here are the parts to make a model of the bacteriophage T4 clamp loader bound to nucleic acid and an open clamp. More information here:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3281585/

The models are surface representation