Class a: All alpha proteins [46456] (286 folds) |
Fold a.61: Retroviral matrix proteins [47835] (1 superfamily) 4-5 helices; right-handed superhelix |
a.61.1: Retroviral matrix proteins [47836] (6 families) the 5th, C-terminal helix is missing in some of the member structures |
Timeline for Fold a.61: Retroviral matrix proteins: