Table 2.
Secondary structures of P22 terminase large (gp2) and small (gp3) subunitsa
| Subunit | State | α-Helix (%) | β-Strand (%) | Other (%) |
|---|---|---|---|---|
| gp2 | Monomer | 36 ± 4 | 36 ± 2 | 28 ± 2 |
| gp3 (wt) | Nonamer | 40 ± 2 | 22 ± 2 | 38 ± 3 |
| gp3 (A112T) | Monomer | b (38) | b (15) | b (47)c |
| gp3 (A112T) | Decamer | 44 ± 2 (46) | 24 ± 2 (19) | 32 ± 3 (35)d |
a
Data are from analysis of Raman spectra, except for values given in parentheses, which are from analysis of CD spectra. See text.
b
Data unavailable from Raman spectra due to rapid self-assembly of monomer.
c
CD analysis indicates 17% turns and 30% undefined structure.
d
CD analysis indicates 12% turns and 23% undefined structure.