Evolution Globins evolved from a common ancestor and can be divided into three lineages: Family M (for myoglobin-like) or F (for FHb-like), which has a typical 3/3 fold. Subfamily FHb, for flavohaemoglobins. Chimeric. Subfamily SDgb, for single-domain globins (not to be confused with SSDgb). Family S (for sensor-like), again with a 3/3 fold. Subfamily GCS, for Globin-coupled sensors. Chimeric. Subfamily PGb, for protoglobins. Single-domain. Subfamily SSDgb, for sensor single-domain globins. Family T (for truncated), with a 2/2 fold All subfamilies can be chimeric, single-domain, or tandemly linked. Subfamily TrHb1 (also T1 or N). Subfamily TrHb2 (also T2 or O). Includes 2/2 phytoglobins. Subfamily TrHb3 (also T3 or P).
Evolution Globins evolved from a common ancestor and can be divided into three lineages: Family M (for myoglobin-like) or F (for FHb-like), which has a typical 3/3 fold. Subfamily FHb, for flavohaemoglobins. Chimeric. Subfamily SDgb, for single-domain globins (not to be confused with SSDgb). Family S (for sensor-like), again with a 3/3 fold. Subfamily GCS, for Globin-coupled sensors. Chimeric. Subfamily PGb, for protoglobins. Single-domain. Subfamily SSDgb, for sensor single-domain globins. Family T (for truncated), with a 2/2 fold All subfamilies can be chimeric, single-domain, or tandemly linked. Subfamily TrHb1 (also T1 or N). Subfamily TrHb2 (also T2 or O). Includes 2/2 phytoglobins. Subfamily TrHb3 (also T3 or P).