Allograft inflammatory factor-1 (AjAIF-1) was cloned from Apostichopus japonicus.
The full-length of AjAIF-1 is 1541 bp with a 477 bp ORF.
AjAIF-1 was widely expressed in all tested tissues of A. japonicus.
AjAIF-1 could be induced by Vibrio splendidus challenge and physical injury in coelomocytes.