Non-symbiotic hemoglobin 2, found in other species; isolated from Arabidopsis thaliana; may not function as an oxygen storage or transport protein, but might act as an oxygen sensor or play a role in electron transfer, possibly to a bound oxygen molecule; has a low affinity for O(2); amino acid sequence in first source; GenBank U94999
Source
Proc Natl Acad Sci U S A 1997 Oct 28;94(22):12230-4