Sequence alignment between 1f3f(A) and UniProt seq P22887 (NDKC_DICDI):

P22887 (NDKC_DICDI): Nucleoside diphosphate kinase, cytosolic from Dictyostelium discoideum
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150     
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
UniProt: MSTNKVNKERTFLAVKPDGVARGLVGEIIARYEKKGFVLVGLKQLVPTKDLAESHYAEHKERPFFGGLVSFITSGPVVAMVFEGKGVVASARLMIGVTNPLASAPGSIRGDFGVDVGRNIIHGSDSVESANREIALWFKPEELLTEVKPNPNLYE
         .........................................................................................................................X.................................
PDB seq: -----VNKERTFLAVKPDGVARGLVGEIIARYEKKGFVLVGLKQLVPTKDLAESHYAEHKERPFFGGLVSFITSGPVVAMVFEGKGVVASARLMIGVTNPLASAPGSIRGDFGVDVGRNIIGGSDSVESANREIALWFKPEELLTEVKPNPNLYE
              ----+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150