polyhistidine peptide an amino acid motif in proteins - Snooptag snoopcatcher peptide Unveiling the Versatility of Polyhistidine Peptides in Biotechnology and Research

Myc tag The polyhistidine peptide, often recognized by the trademarked name His-tag, is a fundamental tool in modern molecular biology and biochemistryDiscovery and Characterisation of Novel Poly-Histidine- .... This short sequence of amino acids, primarily composed of at least six consecutive histidine residues, plays a crucial role in a variety of applications, most notably in protein expression and purificationAD1.1.10 recognizes proteins and peptides containing the polyhistidine tag(His-tag). The most common His-tag is the H-H-H-H-H-H (6x-His) motif, .... The inherent properties of histidine residues, particularly their imidazole side chains, enable strong and specific binding to metal ions, making polyhistidine an ideal choice for affinity chromatography.

When discussing the applications of polyhistidine peptides, their utility in protein purification stands outPolyhistidine facilitates direct membrane translocation of .... The His-tag is frequently attached to recombinant proteins, allowing for their facile isolation from complex cellular mixtures.作者：S Kimura·2017·被引用次数：13—The polyhistidine peptides (PHPs)have been previously reported as novel cell-penetrating peptidesand are efficiently internalized into mammal cells; however, ... This is achieved through affinity chromatography using immobilized metal ions, such as nickel (Ni-NTA) or cobalt. The affinity of polyhistidine to Ni-NTA is well-established and forms the basis of many purification protocols. Researchers often utilize hexahistidine peptides, or 6xHis-tags, for their robust binding capabilities. This method ensures high purity of the target protein, which is essential for downstream applications like structural analysis, functional studies, and therapeutic development. The His tag peptide is a common and ubiquitous affinity tag employed in expression vectors and protein expression and purification reagents.

Beyond its prominent role in purification, the polyhistidine peptide has emerged as a significant player in cell biology as a cell-penetrating peptide (CPP). Polyhistidine peptides have been previously reported as novel cell-penetrating peptides and are efficiently internalized into mammal cells. Studies have demonstrated that short polyhistidine peptides can effectively penetrate into cells, acting as efficient carriers for delivering various molecules.Polyhistidine Peptide Inhibitor of the Aβ Calcium Channel ... For instance, research has shown that polyhistidine peptides are an effective carrier of proteins into the intracellular space of various cultured plant cells with intact cell wallsHis TagPeptideis a hexapeptide with 6 histidines primarily used in tagging proteins. Used in affinity purification of recombinant proteins.. This ability to facilitate intracellular delivery opens doors for novel therapeutic strategies and research tools.

The mechanism by which polyhistidine peptides exert their cell-penetrating ability is an active area of research. While some studies suggest a charge-independent internalization mechanism, others explore how polyhistidine can facilitate direct membrane translocation. For example, a modified L6 peptide, referred to as HL6 (CHHHHHRRWQWRHHHHHC), where short polyhistidine peptides are introduced into both flanks, has demonstrated enhanced cell-penetrating ability in human bronchoalveolar carcinoma A549 cells.What is a Polyhistidine or Histidine Affinity Tag This highlights the potential for polyhistidine sequences to be strategically incorporated into larger peptide structures to improve cellular uptake.

The versatility of polyhistidine peptides extends to other areas as well.AD1.1.10 recognizes proteins and peptides containing the polyhistidine tag(His-tag). The most common His-tag is the H-H-H-H-H-H (6x-His) motif, ... For example, a small four-histidine peptide, NAHis04, has been identified as a potent inhibitor of Aβ-induced calcium channel currents in artificial lipid membranes. This discovery suggests potential therapeutic applications for polyhistidine peptides in conditions involving ion channel dysfunction. Furthermore, polyhistidine sequences have been explored in the design of novel materials and inhibitors. Two poly-histidine-poly-glycine peptides (pHpG-H5 and pHpG-H7) have been identified as promising candidates for matrix metalloproteinase inhibitorsHis TagPeptideis a hexapeptide with 6 histidines primarily used in tagging proteins. Used in affinity purification of recombinant proteins.. In another instance, poly-l-histidine has demonstrated the ability to mediate acid-dependent fusion and leakage, indicating its potential in drug delivery systemsFindpolyhistidineand related products for scientific research at MilliporeSigma..

The development of antibodies and detection reagents targeting polyhistidine tags is also crucial for their widespread use. For example, AD1.1.10 recognizes proteins and peptides containing the polyhistidine tag, often utilizing a His-tag or 6xHis-tag motif.Apolyhistidine-tag is an amino acid motif in proteins that consists of at least six histidine (His) residues, often at the N- or C-terminus of the protein. This allows for the sensitive and specific detection of tagged proteins in various experimental settingsThepolyhistidine tags, or 6xHis-tags, are often used for affinity purification of polyhistidine-tagged recombinant proteins expressed in Escherichia coli and .... Commercially available reagents like the His tag peptide (DAG-P2055) further streamline experimental workflows, offering high sensitivity, specificity, and reproducibility for use in assaysGlucagon-like peptide-1 suppresses neuroinflammation and improves ....

In summary, the polyhistidine peptide is a remarkably versatile molecule with established applications in protein purification and an expanding role in cell penetration and therapeutic development. Its ability to bind metal ions, facilitate cellular uptake, and serve as a building block for novel peptide designs underscores its importance in scientific research and biotechnology. Whether as a peptide tag for purification or as a functional peptide with intrinsic biological activity, the polyhistidine motif continues to be a cornerstone of innovation作者：S Kimura·2017·被引用次数：13—The polyhistidine peptides (PHPs)have been previously reported as novel cell-penetrating peptidesand are efficiently internalized into mammal cells; however, ....