>tr|A0A2K8XWI8|A0A2K8XWI8_9ALTE Small ribosomal subunit protein bS21 OS=Alteromonas sp. MB-3u-76 GN=rpsU MPIVKVRENEPFDVALRRFKRSCEKAGVLSEVRRREFFEKPTWERKRKKAAAKKRHLKKL ARENARRVKLY