>sp|B2U3T1|CRL_SHIB3 Sigma factor-binding protein Crl OS=Shigella boydii serotype 18 GN=crl MTLPSGHPKSRLIKKFTALGPYIREGKCEDNRFFFDCLAVCVNVKPAPEVREFWGWWMEL EAQESRFTYSYQFGLFDKAGDWKSVPVKDTEVVERLEHTLREFHEKLRELLTTLNLKLEP ADDFRDEPVKLTA