| Description | This entry represents a group of haemoglobin-like proteins found in eubacteria, cyanobacteria, protozoa, algae and plants, but not in animals or yeast. These proteins have a truncated 2-over-2 rather than the canonical 3-over-3 α-helical sandwich fold [ ]. They include:HbN (or GlbN): a truncated haemoglobin-like protein that binds oxygen cooperatively with a very high affinity and a slow dissociation rate, which may exclude it from oxygen transport. It appears to be involved in bacterial nitric oxide detoxification and in nitrosative stress [ ].Cyanoglobin (or GlbN): a truncated haemoprotein found in cyanobacteria that has high oxygen affinity, and which appears to serve as part of a terminal oxidase, rather than as a respiratory pigment [ ].HbO (or GlbO): a truncated haemoglobin-like protein with a lower oxygen affinity than HbN. HbO associates with the bacterial cell membrane, where it significantly increases oxygen uptake over membranes lacking this protein. HbO appears to interact with a terminal oxidase, and could participate in an oxygen/electron-transfer process that facilitates oxygen transfer during aerobic metabolism [ ].Glb3: a nuclear-encoded truncated haemoglobin from plants that appears more closely related to HbO than HbN. Glb3 from Arabidopsis thaliana (Mouse-ear cress) exhibits an unusual concentration-independent binding of oxygen and carbon dioxide [ ]. | Name | Truncated hemoglobin |
| Short Name | Hemoglobin_trunc | Type | Family |
Powered by
Have you tried our InterMine mobile apps?
and interoperation is funded by 
