Mean Shannon entropy of the archaeal parvulin and its genomic neighbours. At the parvulin locus of N. maritimus, we found the following neighbouring proteins to be present in at least 5 different contigs: UbiA, DUF, hyp, PPOX, and DHCP. The mean Shannon entropy (unit: bit) of these sequences was calculated as a measure of sequence diversity and compared with the same measure for sdPar from the corresponding organisms.
Abbreviations: UbiA, UbiA prenyltransferase; DUF, hypothetical protein of unknown function (COG4911/DUF2203); hyp, hypothetical protein nmar_0940; PPOX, pyridoxamine 5′-phosphate oxidase-related FMN-binding protein; Par, parvulin; DHCP, DEAD/DEAH box containing protein.