>5a0q_b mol:protein length:219 PROTEASOME SUBUNIT BETA TYPE-4 TQNPMVTGTSVLGVKFEGGVVIAADMLGSYGSLARFRNISRIMRVNNSTMLGASGDYAD FQYLKQVLGQMVIDEELLGDGHSYSPRAIHSWLTRAMYSRRSKMNPLWNTMVIGGYADG ESFLGYVDMLGVAYEAPSLATGYGAYLAQPLLREVLEKQPVLSQTEARDLVERCMRVLY YRDARSYNRFQIATVTEKGVEIEGPLSTETNWDIAHMISGFE