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structure nameSOLUTION STRUCTURE OF A DIMER OF LAC REPRESSOR DNA-BINDING DOMAIN COMPLEXED TO ITS NATURAL OPERATOR O3
(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
redundant complexes1l1m 1osl 2bjc 2kej 2kei 1cjg
reference complex1l1m_B
links to other resourcesNAKB PDBSum PDIdb DNAproDB
protein sequence
interface signatureLYSYQSRLA

Estimated binding specificities ?

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# IC=6.711 IC/col=0.959 n_of_columns=7 specificity:   
A |  69   9   0   0  96   0   9
C |   9  11   0   0   0   0  69
G |   9  67   0  96   0  96   9
T |   9   9  96   0   0   0   9
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updated Sun Jun 28 05:52:08 2026