passages.id: split_6_test_2672_passage
passages.type: progene_text
passages.text: Using surface plasmon resonance spectroscopy we have shown that recombinant MASP-1 and - 2 , their N - terminal CUB1 ( module originally found in complement proteins C1r / C1s , Uegf , and bone morphogenetic protein-1 ) - epidermal growth factor ( EGF ) - CUB2 and CUB1 - EGF segments , and MAp19 bind to immobilized L-ficolin/P35 in the presence of Ca(2+) ions .