Leghemoglobin function

Leghemoglobin function Cold inactivation of Fe protein Activation energy change at 20° Nomenclature... 

The symbiotic nitrogen-fixing system in root nodules contains the dioxygen-binding hemoprotein, leghemoglobin, but its function is still uncertain. 

Anyone aware of the similar biochemical functions of hemoglobin, myoglobin, and leghemoglobin could expect the structural similarities. In a growing number of other cases, however, a comparison of three-dimensional structures has revealed striking similarities between proteins that were not expected to be related. A case in point is the protein actin, a major component of the cytoskeleton (Section 34.2), and heat shock protein 70 (Hsp-70), which assists protein folding inside cells. These two proteins were found to be noticeably similar in structure despite only 1.5.6% sequence identity (Figure 6.15). On the basis of their three-dimensional structures,... 

---