Sequence alignment between 1s3d(A) and UniProt seq P08692 (ARSC1_ECOLX):

P08692 (ARSC1_ECOLX): Arsenate reductase from Escherichia coli
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MSNITIYHNPACGTSRNTLEMIRNSGTEPTIILYLENPPSRDELVKLIADMGISVRALLRKNVEPYEQLGLAEDKFTDDQLIDFMLQHPILINRPIVVTPLGTRLCRPSEVVLDILQDAQKGAFTKEDGEKVVDEAGKRLK
         ...........................................................X.................................................................................
PDB seq: --NITIYHNPACGTSRNTLEMIRNSGTEPTIILYLENPPSRDELVKLIADMGISVRALLAKNVEPYEQLGLAEDKFTDDQLIDFMLQHPILINRPIVVTPLGTRLCRPSEVVLDILQDAQKGAFTKEDGEKVVDEAGKRL-
           -------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+ 
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140