Sequence alignment between 4x2r(A) and UniProt seq C0W7K4 (C0W7K4_9ACTO):

C0W7K4 (C0W7K4_9ACTO): 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase from Actinomyces urogenitalis DSM 15434 
                  10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
UniProt: -MLTLLPAVDVADGKAVRLLQGEAGSETDYGSPIEAARDWVEAGAEWIHLVDLDAAFGRGSNAPLLERIVGEVGIKVELSGGIRDDASLTRALKAGAARVNLGTAALEDPQWTARVIAEHGEKIAVGLDVRGTTLAARGWTKEGGDLWQTLDRLNEAGCRRYVVTDVTKDGTLTGPNTELLRQVAARTSAPVVASGGISSLEDIAALARLVPQGVDSAIVGKALYNGNFTLPQALAVAGGAAVQDVQA
         ...........................................................................................................................................XXXXX........................................................................................................
PDB seq: AMLTLLPAVDVADGKAVRLLQGEAGSETDYGSPIEAARDWVEAGAEWIHLVDLDAAFGRGSNAPLLERIVGEVGIKVELSGGIRDDASLTRALKAGAARVNLGTAALEDPQWTARVIAEHGEKIAVGLDVRGTTLAARG-----GDLWQTLDRLNEAGCRRYVVTDVTKDGTLTGPNTELLRQVAARTSAPVVASGGISSLEDIAALARLVPQGVDSAIVGKALYNGNFTLPQALAVAGGAAVQDVQA
         ----------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--------     ------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
                  10        20        30        40        50        60        70        80        90       100       110       120       130                 150       160       170       180       190       200       210       220       230       240