GGGG-Cys(Alexa 594)-AGLVPRGSGHHHHHHAKR

GGGG-Cys(Alexa 594)-AGLVPRGSGHHHHHHAKR is a synthetic hexahistidine (His6) tag-containing peptide. This product contains a hexahistidine sequence (HHHHHH). Polyhistidine tags coordinate immobilized transition-metal ions and are widely used in immobilized metal affinity chromatography, especially Ni-NTA and cobalt-based capture.

• Ni-NTA or cobalt affinity-capture studies
• IMAC method development
• metal-binding comparisons
• His-tag accessibility controls

The behavior of a motif embedded in a longer peptide can differ from the isolated tag or parent sequence. Flanking residues, linkers, phosphorylation, fluorophores, affinity handles, cyclization, and terminal modifications may alter accessibility, binding, uptake, or assay performance.

1. One-step purification of recombinant proteins with the 6xHis/Ni-NTA system
2. Rapid evaluation of nickel binding properties of polyhistidine tags