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structure nameMETHIONINE APOREPRESSOR MUTANT (Q44K) COMPLEXED TO HALF OF THE CONSENSUS OPERATOR SEQUENCE
(METHIONINE REPRESSOR)
referencePhillips et al. 'Structure 8 905 2000
sourceEscherichia coli
experimentX-ray (resolution=2.20, R-factor=0.227)
structural superfamilyRibbon-helix-helix;
sequence familyMet Aporepressor, MetJ;
multimeric complexes1cma_AB 1mj2_ABCD 1mjm_AB 1mjo_ABCD 1mjp_AB 1mjq_ABCD 1mjq_GHIJ
reference complex1mjo_B
links to other resourcesNAKB PDBSum PDIdb DNAproDB
protein sequence
interface signatureKT

Estimated binding specificities ?

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# IC=3.634 IC/col=0.606 n_of_columns=6 specificity:   
A |  59   0  59  24   7   0
C |   7   0  22  24   7   7
G |  14  96   8  24  73   0
T |  16   0   7  24   9  89
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updated Thu Jan 8 18:23:55 2026