>sp|B2V2J3|RS21_CLOBA Small ribosomal subunit protein bS21 OS=Clostridium botulinum (strain Alaska E43 / Type E3) OX=508767 GN=rpsU PE=3 SV=1 MSEIKVGENETLESALRRFKKKCARAGVLSEVRKREHYEKPSVKKKKKSEAARKRKFK