>sp|P30340|SMTB_SYNE7 Transcriptional repressor SmtB OS=Synechococcus elongatus GN=smtB MTKPVLQDGETVVCQGTHAAIASELQAIAPEVAQSLAEFFAVLADPNRLRLLSLLARSEL CVGDLAQAIGVSESAVSHQLRSLRNLRLVSYRKQGRHVYYQLQDHHIVALYQNALDHLQE CR