Peptide sequence: TTQTEHKCVL DSCRSLEAEG FQVTYLPVQK SGIIDLKELE AAIQPDTSLV Sequence homology: Cow: 100%; Dog: 93%; Guinea Pig: 100%; Horse: 100%; Human: 100%; Mouse: 100%; Rabbit: 93%; Rat: 100%; Yeast: 92%. NFS1 (nitrogen fixation 1), also known as NIFS o