TABLE 5.
Unique protein families in D. radiodurans
| ORFs in family | Range of identity (%) | Approx lengtha | Sequence features and comments |
|---|---|---|---|
| DRA0346, DRB0145 | 33 | 400 | α/β proteins |
| DR1261, DR1348 | 31 | 80 | DQE/H-rich proteins, predominantly β-strand proteins; present in Caulobacter crescentus unfinished genome |
| DR1022, DR2185 | 43 | 150 | Predominantly α-helix proteins; N-terminal domain in DR1022 (C-terminal domain is a MazG-like protein, related to phosphoribosyl-ATP pyrophosphatase) |
| DR0082, DR2593, DR1748 | 31–35 | 160 | Repetitive sequences (GRhGG repeats); coiled-coil |
| DR2532, DR2457 | 43 | 120 | α/β proteins, tryptophan-rich |
| DR0871, DR1920, DR2360 | 36–44 | 120 | Membrane proteins; CXPXXXC motif; DR0871 has duplication of the domain |
| DR1814, DR1000 | 30 | 150 | Predominantly α-helical proteins |
| DR2179, DR1611 | 71 | 150 | Possible recent duplication; α/β proteins |
| DR1251, DR1319, DR1545 | 26–31 | 180 | Secreted α/β proteins with a single conserved cysteine |
| DR1530, DR0419 | 43 | 130 | Predominantly α-helical proteins; contain a glycine-rich loop |
| DRA0012, DR2241 | 43 | 450 | A 90-amino-acid N-terminal repeat; contain CXXC and CXXXC motifs; predominantly α-helical and coiled-coil proteins |
| DR0481, DR1195, DR1301 | 31–44 | 170 | Predominantly α-helical proteins; some have transmembrane segments |
| DR0387 (DR2038 + DR2039) | 38–46 | 260 | Predominantly α-helical proteins |
a
Number of amino acids.