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    "title": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
    "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
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    "tldr": "TA4C is a small aldehyde reagent that alkylates a protein's N-terminal amine in one aqueous step, labeling the protein and anchoring it to a liposome membrane.",
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            "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
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            "value": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
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            "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
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            "value": "TA4C is a small aldehyde reagent that alkylates a protein's N-terminal amine in one aqueous step, labeling the protein and anchoring it to a liposome membrane.",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to)",
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            "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
            "attribute": "section",
            "value": "What it is",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to"
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            "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
            "attribute": "section",
            "value": "Why the N-terminus matters",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to"
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            "attribute": "section",
            "value": "What the numbers say",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to"
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            "entity": "One-Step N-Terminal Tagging That Anchors Proteins to Liposome Membranes",
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            "value": "From model protein to targeting peptide",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/one-step-n-terminal-tagging-that-anchors-proteins-to)",
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            "value": "Bench-side notes for anyone handling these tools",
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    "faq": [
        {
            "q": "What is TA4C and why does it selectively tag the N-terminus?",
            "a": "TA4C is 1H-1,2,3-triazole-4-carbaldehyde. Its aldehyde reacts with the N-terminal α-amino group, which has a lower pKa than lysine side chains and is the most nucleophilic amine at neutral pH, giving site-specific tagging without genetic engineering."
        },
        {
            "q": "How efficient is N-terminal alkylation of GFP with TA4C?",
            "a": "The bioRxiv study reports 93% conversion with the hexyl-tailed TA4C reagent and 70% with the nonyl-tailed variant on superfolder GFP, with the longer alkyl chain giving stronger membrane association."
        },
        {
            "q": "Can TA4C-alkylated peptides target cancer cells on liposomes?",
            "a": "Yes. N-terminally alkylated GE11 peptide anchored onto liposomes actively bound EGFR-overexpressing A431 cells, demonstrating that the chemistry works for targeted drug-delivery constructs."
        }
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                        "text": "TA4C is 1H-1,2,3-triazole-4-carbaldehyde. Its aldehyde reacts with the N-terminal α-amino group, which has a lower pKa than lysine side chains and is the most nucleophilic amine at neutral pH, giving site-specific tagging without genetic engineering."
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                    "@type": "Question",
                    "name": "How efficient is N-terminal alkylation of GFP with TA4C?",
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                        "@type": "Answer",
                        "text": "The bioRxiv study reports 93% conversion with the hexyl-tailed TA4C reagent and 70% with the nonyl-tailed variant on superfolder GFP, with the longer alkyl chain giving stronger membrane association."
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                        "text": "Yes. N-terminally alkylated GE11 peptide anchored onto liposomes actively bound EGFR-overexpressing A431 cells, demonstrating that the chemistry works for targeted drug-delivery constructs."
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    "dates": {
        "published": "2026-08-15",
        "modified": "2026-10-16"
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}