>sp|P04231|HB23_MOUSE H-2 class II histocompatibility antigen, E-S beta chain OS=Mus musculus GN=H2-Eb1
WFLEYSTSECHFYNGTQRVRLLERYFYNLEENLRFDSDVGEFRAVTELGRPDAENWNSQP
EFLEQRRAAVDTYCRHNYEILDKFLVPRRVEPTVTVYPTKTQPLEHHNLLVCSVSDFYPG
NIEVRWFRNGKEEKTGIVSTGLVRNGDWTFQTLVMLETVPQSGEVYTCQVEHPSLTDPVT
VEWKAQSTSAQNKMLSGVGGFVLGLLFLGAGLFIYFRNQKGQSGLQPTGLLS