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
pdb1kka,1,1,G,1,17,C,,,,,,,,,
pdb1kka,1,2,G,1,16,C,,,,,,,,,
pdb1kka,1,3,G,1,15,C,,,,,,,,,
pdb1kka,1,4,G,1,14,C,,,,,,,,,
pdb1kka,1,5,A,1,13,U,,,,,,,,,
pdb1kka,1,6,U,1,12,A,,,,,,,,,