Cover design
The neighbor-joining tree of candidate ubiquitin-like proteins generated with the internal branch test. The MoaD/ThiS superfamily subtrees are highlighted in red, the ubiquitin-like superfamily is highlighted in blue and the 2Fe-12S ferredoxin superfamily is highlighted in yellow. For each SCOP superfamily, subtrees have the numbers assigned as in Table 1. The non-highlighted sequences are structural analogs. For further details see J.R. Bienkowska et al., pages 897-904.
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