Sequence alignment between 1v4n(A) and UniProt seq F9VN03 (F9VN03_SULTO):

F9VN03 (F9VN03_SULTO): S-methyl-5'-thioadenosine phosphorylase from Sulfurisphaera tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7)
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MIEPKEKASIGIIGGSGLYDPQILTNVKEIKVYTPYGEPSDNIILGELEGRKVAFLPRHGRGHRIPPHKINYRANIWALKSLGVKWVIAVSAVGSLRLDYKPGDFVVPNQFIDMTKGRTYTFFDGPTVAHVSMADPFCEHLRSIILDSAKDLGITTHDKGTYICIEGPRFSTRAESIVWKEVFKADIIGMTLVPEVNLACEAEMCYSVIGMVTDYDVFADIPVTAEEVTKVMAENTAKVKKLLYEVIRRLPEKPDERKCSCCQALKTALV-
PDB seq: -----EKASIGIIGGSGLYDPQILTNVKEIKVYTPYGEPSDNIILGELEGRKVAFLPRHGRGHRIPPHKINYRANIWALKSLGVKWVIAVSAVGSLRLDYKPGDFVVPNQFIDMTKGRTYTFFDGPTVAHVSMADPFCEHLRSIILDSAKDLGITTHDKGTYICIEGPRFSTRAESIVWKEVFKADIIGMTLVPEVNLACEAEMCYSVIGMVTDYDVFADIPVTAEEVTKVMAENTAKVKKLLYEVIRRLPEKPDERKCSCCQALKTALVL
              ---+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--
                10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270