Sequence alignment between 6pk5(A) and UniProt seq P43408 (KADA_METIG):

P43408 (KADA_METIG): Adenylate kinase from Methanotorris igneus
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190  
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--
UniProt: MKNKVVVVTGVPGVGGTTLTQKTIEKLKEEGIEYKMVNFGTVMFEVAKEEGLVEDRDQMRKLDPDTQKRIQKLAGRKIAEMAKESNVIVDTHSTVKTPKGYLAGLPIWVLEELNPDIIVIVETSSDEILMRRLGDATRNRDIELTSDIDEHQFMNRCAAMAYGVLTGATVKIIKNRDGLLDKAVEELISVLK
         ..........................................................................................................................................XXX...................................................
PDB seq: -KNKVVVVTGVPGVGGTTLTQKTIEKLKEEGIEYKMVNFGTVMFEVAKEEGLVEDRDQMRKLDPDTQKRIQKLAGRKIAEMAKESNVIVDTHSTVKTPKGYLAGLPIWVLEELNPDIIVIVETSSDEILMRRLGDATR---IELTSDIDEHQFMNRCAAMAYGVLTGATVKIIKNRDGLLDKAVEELISVLK
          --------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--------   --------+---------+---------+---------+---------+--
                 10        20        30        40        50        60        70        80        90       100       110       120       130                 150       160       170       180       190