Electrophoretic mobility shift assay (EMSA) or gel shift assay is a commonly used technique for understanding cellular and molecular mechanisms by analyzing protein-nucleic acid interactions. Santa Cruz Biotechnology offers an array of specialty reagents for gel shift assays including a selection of consensus and mutant Oligonucleotides. Oligonucleotides are composed of well characterized consensus DNA sequences for specific transcription factors of interest. Mutant oligonucleotides are also available with one or more site-directed mutations for competitive gel shift assays.