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structure nameREFINED SOLUTION STRUCTURE OF A DIMER OF LAC REPRESSOR DNA-BINDING DOMAIN COMPLEXED TO ITS NATURAL OPERATOR O1
(LACTOSE OPERON REPRESSOR)
sourceESCHERICHIA COLI
experimentNMR
structural superfamilylambda repressor-like DNA-binding domains;
sequence familyBacterial regulatory proteins, lacI family;
multimeric complexes1cjg_AB 1efa_AB 1jwl_AB 1l1m_AB 1lbg_AB 1lbg_CD 1osl_AB 2bjc_AB 2kei_AB 2kej_AB 2kek_AB 2pe5_AB
reference complex1l1m_B
links to other resourcesNAKB PDBSum PDIdb DNAproDB
protein sequence
interface signatureYSYQSRHALA

Estimated binding specificities ?

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# IC=8.116 IC/col=0.902 n_of_columns=9 specificity:   
A |   5   0   3   0  96   7  58   7   8
C |   3   0   3   0   0   4  32  74   7
G |   3  96   5   0   0   7   3   8  74
T |  85   0  85  96   0  78   3   7   7
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updated Sun Jun 28 05:51:53 2026