entry_id,entity code 0,residue number 0,residue name 0,entity code 1,residue number 1,residue name 1,entity code 2,residue number 2,residue name 2,entity code 3,residue number 3,residue name 3,entity code 4,residue number 4,residue name 4
1luu,1,1,C,1,17,G,,,,,,,,,
1luu,1,2,C,1,16,G,,,,,,,,,
1luu,1,3,A,1,15,U,,,,,,,,,
1luu,1,5,A,1,13,U,,,,,,,,,