What are the sources of leghemoglobin?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                Leghemoglobin, the oxygen-carrying protein responsible for the reddish-pink color inside active legume root nodules, is created through a fascinating symbiotic partnership between a plant and nitrogen-fixing bacteria. While its natural origin lies within this plant-microbe interaction, advancements in biotechnology have enabled entirely new sources for this versatile molecule.