Lysyl Endopeptidase

Lysyl endopeptidase is a proteolytic enzyme that selectively cleaves peptide bonds on the carboxyl-terminal side of lysine residues, making it useful for controlled protein digestion and structural analysis. By recognizing lysine within a protein sequence and hydrolyzing the adjacent bond, the enzyme generates defined peptides that can be characterized by mass spectrometry or other analytical methods. In cancer research, this predictable cleavage supports proteomic studies, including protein identification, tumor biomarker characterization, and analysis of disease-associated changes in protein expression or modification. These applications help researchers compare cancer and normal tissues and improve understanding of molecular pathways involved in tumor development.

Lysyl Endopeptidase - Related Videos

Research

JoVE EoE - Prostate Cancer

Protein Extraction and Proteolysis: A Method to Obtain Proteins from Prostate Tumor Tissue Samples and their Enzymatic Digestion into Peptides

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2023

This video describes the technique of protein extraction and digestion to obtain peptides from prostate tumor tissue. These peptides on further analysis can help identify novel targets for oncotherapy.

Lysostaphin-Based Enzyme Protection Assay: An In Vitro Method to Quantify Intracellular Staphylococcus aureus Load by Enzyme-Mediated Selective Killing of Extracellular Bacteria

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2025

In this video, we demonstrate a lysostaphin-based in vitro enzyme protection assay to quantify the Staphylococcus aureus internalization in A549 cells. The assay helps in qualitative, quantitative, and characterization studies of the intracellular bacterial load in the host cells.

Research

JoVE Journal - Environment
Free Sample

Nanopore DNA Sequencing for Metagenomic Soil Analysis

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Cited by 8 •

2017

Nanopore technology for sequencing biomolecules has wide applications in the life sciences, including identification of pathogens, food safety monitoring, genomic analysis, metagenomic environmental monitoring, and characterization of bacterial antibiotic resistance. In this article, the procedure for metagenomic soil DNA sequencing for species identification using the nanopore sequencing technology is demonstrated.

Production, Crystallization and Structure Determination of C. difficile PPEP-1 via Microseeding and Zinc-SAD

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Cited by 4 •

2016

Proline-proline endopeptidase-1 (PPEP-1) is a secreted metalloprotease and promising drug-target from the human pathogen Clostridium difficile. Here we describe all methods necessary for the production and structure determination of this protein.

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