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- W2034637648 abstract "The interaction of a symmetric lac operator duplex, d(TGTGAGCGCTCACA)2, with the N-terminal 56-residue headpiece fragment of the lac repressor protein was monitored by 31P NMR spectroscopy. The changes in the 31P chemical shifts upon addition of the headpiece demonstrated an end point of two headpiece fragments per symmetric 14-mer duplex with each headpiece binding to the T1pG2pT3pG4pA5 ends of the duplex. The specific phosphate 31P perturbations observed are consistent with those residues implicated in protein binding by previous NMR, molecular biological, and biochemical techniques. Upon complexation, the 31P signals of phosphates G2-A5 showed upfield or downfield shifts (less than 0.2 ppm) while most other residues were unperturbed. The interactions were dependent on ionic strength. The 31P NMR data provide direct evidence for predominant recognition of the 5' strand of the 5'-TGTGA/3'-ACACT binding site." @default.
- W2034637648 created "2016-06-24" @default.
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- W2034637648 creator A5071329682 @default.
- W2034637648 creator A5077805673 @default.
- W2034637648 date "1990-07-17" @default.
- W2034637648 modified "2023-10-09" @default.
- W2034637648 title "Phosphorus-31 NMR spectra of an oligodeoxyribonucleotide duplex lac operator-repressor headpiece complex" @default.
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- W2034637648 doi "https://doi.org/10.1021/bi00480a005" @default.
- W2034637648 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/2144453" @default.
- W2034637648 hasPublicationYear "1990" @default.
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