Sequence alignment between 7ch3(B) and UniProt seq Q9WYB3 (ARAA_THEMA):

Q9WYB3 (ARAA_THEMA): L-arabinose isomerase from Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)
                 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       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490      
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: MIDLKQYEFWFLVGSQYLYGLETLKKVEQQASKIVDSLNDDPIFPSKIVLKPVLKSSSEITEIFEKANADPKCAGVIVWMHTFSPSKMWIRGLSINKKPLLHLHTQYNREIPWDTIDMDYMNLNQSAHGDREHGFIHARMRLPRKVVVGHWEEKEVREKIAKWMRVACAIQDGRMGQIVRFGDNMREVASTEGDKVEAQIKLGWSINTWGVGELAERVKAVPEREVEELLKEYREKYIMPEDEYSLKAIREQAKIEIALREFLKEKNAVGFTTTFEDLHDLPQLPGLAVQRLMEEGYGFGAEGDWKAAGLVRAIKVMGTSLPGGTSFMEDYTYHLTPGNELVLGAHMLEVCPTIAKEKPRIEVHPLSIGGKADPARLVFDGQEGPAVNASIVDMGNRFRLVVNKVLSVPIERKMPKLPTARVLWKPLPDFKRATTAWILAGGSHHTAFSTAIDVEYLIDWAEALEIEYVVIDENLDLEDFKKELRWNELYWGLLKR
         .......................................................................................................................................................................................................................................................................XXX......................................................................................................................................................................................................................................
PDB seq: MIDLKQYEFWFLVGSQYLYGLETLKKVEQQASKIVDSLNDDPIFPSKIVLKPVLKSSSEITEIFEKANADPKCAGVIVWMHTFSPSKMWIRGLSINKKPLLHLHTQYNREIPWDTIDMDYMNLNQSAHGDREHGFIHARMRLPRKVVVGHWEEKEVREKIAKWMRVACAIQDGRMGQIVRFGDNMREVASTEGDKVEAQIKLGWSINTWGVGELAERVKAVPEREVEELLKEYREKYIMPEDEYSLKAIREQAKIEIALREFLAAANAVGFTTTFEDLHDLPQLPGLAVQRLMEEGYGFGAEGDWKAAGLVRAIKVMGTSLPGGTSFMEDYTYHLTPGNELVLGAHMLEVCPTIAKEKPRIEVHPLSIGGKADPARLVFDGQEGPAVNASIVDMGNRFRLVVNKVLSVPIERKMPKLPTARVLWKPLPDFKRATTAWILAGGSHHTAFSTAIDVEYLIDWAEALEIEYVVIDENLDLEDFKKELRWNELYWGLLK-
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+----- 
                 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       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490