Sequence alignment between 2b4l(A) and UniProt seq P46922 (OPUAC_BACSU):

P46922 (OPUAC_BACSU): Glycine betaine-binding protein OpuAC from Bacillus subtilis (strain 168)
                 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   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MLKKIIGIGVSAMLALSLAACGSENDENASAAEQVNKTIIGIDPGSGIMSLTDKAMKDYDLNDWTLISASSAAMTATLKKSYDRKKPIIITGWTPHWMFSRYKLKYLDDPKQSYGSAEEIHTITRKGFSKEQPNAAKLLSQFKWTQDEMGEIMIKVEEGEKPAKVAAEYVNKHKDQIAEWTKGVQKVKGDKINLAYVAWDSEIASTNVIGKVLEDLGYEVTLTQVEAGPMWTAIATGSADASLSAWLPNTHKAYAAKYKGKYDDIGTSMTGVKMGLVVPQYMKNVNSIEDLKK
PDB seq: -------------------------DENASAAEQVNKTIIGIDPGSGIMSLTDKAMKDYDLNDWTLISASSAAMTATLKKSYDRKKPIIITGWTPHWMFSRYKLKYLDDPKQSYGSAEEIHTITRKGFSKEQPNAAKLLSQFKWTQDEMGEIMIKVEEGEKPAKVAAEYVNKHKDQIAEWTKGVQKVKGDKINLAYVAWDSEIASTNVIGKVLEDLGYEVTLTQVEAGPMWTAIATGSADASLSAWLPNTHKAYAAKYKGKYDDIGTSMTGVKMGLVVPQYMKNVNSIEDLKK
                                  -----+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--
                                      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