passages.id: split_6_test_3004_passage
passages.type: progene_text
passages.text: Kin5 is most closely related to Osm3 , a Caenorhabditis elegans kinesin II ; Osm3 and Kin5 have a 56 % identity , which rises to 60.4 % in the motor domain and a 45 % identity in a 60 amino acid region of the C - terminal FERM ( 4.1 , Ezrin , Radixin , Moesin ) domain , not present in Kin1 or Kin2 , which we hypothesize to be a critical domain either for dimerization or for cargo recognition in ICT .