description | Protein located in or on an encapsulin nanocompartment, proteinaceous shells that encapsulate enzymes. The selectively permeable, self- assembling 25-42 nm shell is made of only 1 protein, unlike the larger bacterial microcompartment. The shell protein has an HK97-like fold and probably evolved from a viral protein. Artificial encapsulin nanocompartments can be expressed and filled with cargo proteins for biotechnological uses. They are found in many bacterial and a few archaeal phyla |