1trr_AB : 3D-footprint complex

structure name	TANDEM BINDING IN CRYSTALS OF A TRP REPRESSOR/OPERATOR HALF-SITE COMPLEX
reference	Lawson et al.
source	ESCHERICHIA COLI
experiment	X-ray (resolution=2.40, R-factor=?)
structural superfamily	TrpR-like;
reference complex	1co0_A
links to other resources	NAKB PDIdb DNAproDB
protein sequence	> 1trr_A interface=1,67,68,78,79,80,82,83, AqqspysaamaeqrheewlrfvdllknayqndlhlpllnlmltpderealgtrvriveellrgemsQRelknelgagIATiTRgsnslkaapvelrqwleevll > 1trr_B interface=79,80, aqqspysaamaeqrheewlrfvdllknayqndlhlpllnlmltpderealgtrvriveellrgemsqrelknelgagiATitrgsnslkaapvelrqwleevll
interface signature	AQRIATTR/AT

Estimated binding specificities ?

readout + contact

# IC=7.886 IC/col=0.563 n_of_columns=14

specificity:

A |   0   0   0  59   3  24  62  24  24  24   4  12  24   3
C |  96   0   0  16  86  24  15  24  24  24  89  13  24   4
G |   0  96   0  13   3  24  13  24  24  24   3  62  24   3
T |   0   0  96   8   4  24   6  24  24  24   0   9  24  86

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updated Sun Jan 4 23:42:40 2026