Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Function
Essential for DNA excision. Site specific recombinase necessary for the excision of the 11 kb nifD element during heterocyst differentiation.
Similarity
Belongs to the XisA/XisC recombinase family.
Sequence
MQNQGQDKYQQAFADLEPLSSTDGSFLGSSLQAQQQREHMRTKVLQDLDKVNLRLKSAKTKVSVRESNGSLQLRATLPIKPGDKDTNGTGRKQYNLSLNIPANLDGLKTAEEEAYELGKLIARKTFEWNDKYLGKEATKKDSQTIGDLLEKFAEEYFKTHKRTTKSEHTFFYYFSRTQRYTNSKDLATAENLINSIEQIDKEWARYNAARAISAFCITFNIEIDLSQYSKMPDRNSRNIPTDAEILSGITKFEDYLVTRGNQVNEDVKDSWQLWRWTYGMLAVFGLRPREIFINPNIDWWLSKENIDLTWKVDKECKTGERQALPLHKEWIDEFDLRNPKYLEMLATAISKKDKTNHAEITALTQRISWWFRKVELDFKPYDLRHAWAIRAHILGIPIKAAADNLGHSMQVHTQTYQRWFSLDMRKLAINQALTKRNEFEVIREENAKLQIENERLRMEIEKLKMEIAYKNS