Target Protein Identification
Target Protein Identification - Related Videos
08:07
Identification of Plasmodesmal Localization Sequences in Proteins In Planta
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Cited by 6 •
2017
Plant intercellular connections, the plasmodesmata (Pd), play central roles in plant physiology and plant-virus interactions. Critical to Pd transport are sorting signals that direct proteins to Pd. However, our knowledge about these sequences is still in its infancy. We describe a strategy to identify Pd localization signals in Pd-targeted proteins.
01:29
Pharmacogenomics: Identification of New Drug Targets
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2026
Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
05:22
Using Phage Display to Select Proteins with High Affinity to a Target Protein
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2025
In this video, we demonstrate the phage display technique to isolate pre-engineered phages expressing proteins with high affinity to the target protein.
10:07
Identification of Post-translational Modifications of Plant Protein Complexes
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Cited by 8 •
2014
We describe here a protocol for the purification and characterization of plant protein complexes. We demonstrate that by immunoprecipitating a single protein within a complex, so we can identify its post-translational modifications and its interacting partners.
07:40
Identification of Host Pathways Targeted by Bacterial Effector Proteins using Yeast Toxicity and Suppressor Screens
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Cited by 5 •
2019
Bacterial pathogens secrete proteins into the host that target crucial biological processes. Identifying the host pathways targeted by bacterial effector proteins is key to addressing molecular pathogenesis. Here, a method using a modified yeast suppressor and toxicity screen to elucidate host pathways targeted by toxic bacterial effector proteins is described.
FAQs
Affinity-based capture uses the binding behavior of a biological molecule, drug, or experimental probe to retain interacting proteins while other components remain in the mixture. Researchers can then separate captured proteins from the surrounding complex sample. This enrichment connects molecular binding to candidate protein identities and provides material for subsequent peptide analysis.
After interacting proteins are separated, mass spectrometry analyzes their peptide fingerprints. These characteristic peptide patterns help determine which proteins were present in the captured material. The result converts a biochemical binding event into identifiable molecular evidence, allowing researchers to associate the activity of a molecule or probe with particular protein candidates.
Initial capture and peptide analysis identify proteins associated with a molecule or probe, but they do not by themselves establish that every association is specific. Genetic or biochemical assays provide a separate test of the interaction and its specificity. Validation strengthens the link between binding, protein function, and the measurable biological effect under investigation.
A typical workflow begins by exposing a complex biological mixture to the molecule, drug, or probe of interest. Interacting proteins are captured through affinity-based binding, separated from other components, and examined by mass spectrometry to obtain peptide fingerprints. Researchers then use genetic or biochemical assays to validate the resulting protein interaction and its specificity.
Researchers can apply the approach when they need to connect a drug or experimental probe with its molecular targets. It can reveal proteins involved in signaling, identify potential off-target proteins, and support investigations of disease mechanisms. These results help explain how molecular binding produces biological effects and can inform therapeutic development.
In biochemistry, the method links molecular activity with cellular function by combining binding-based enrichment, protein separation, peptide analysis, and interaction validation. It can clarify the roles of proteins in signaling pathways, distinguish intended targets from possible off-targets, and provide molecular context for interpreting biological responses associated with a drug or probe.