Sequence alignment between 3h2s(A) and UniProt seq Q03B84 (Q03B84_LACP3):

Q03B84 (Q03B84_LACP3): NADH-flavin reductase from Lacticaseibacillus paracasei (strain ATCC 334 / BCRC 17002 / CCUG 31169 / CIP 107868 / KCTC 3260 / NRRL B-441)
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         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: MKIAVLGATGRAGSAIVAEARRRGHEVLAVVRDPQKAADRLGATVATLVKEPLVLTEADLDSVDAVVDALSVPWGSGRGYLHLDFATHLVSLLRNSDTLAVFILGSASLAMPGADHPMILDFPESAASQPWYDGALYQYYEYQFLQMNANVNWIGISPSEAFPSGPATSYVAGKDTLLVGEDGQSHITTGNMALAILDQLEHPTAIRDRIVVRDAD
PDB seq: MKIAVLGATGRAGSAIVAEARRRGHEVLAVVRDPQKAADRLGATVATLVKEPLVLTEADLDSVDAVVDALSVPWGSGRGYLHLDFATHLVSLLRNSDTLAVFILGSASLAMPGADHPMILDFPESAASQPWYDGALYQYYEYQFLQMNANVNWIGISPSEAFPSGPATSYVAGKDTLLVGEDGQSHITTGNMALAILDQLEHPTAIRDRIVVRDAD
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210