| Factor | Investigation Strategy |
|---|---|
| Post-translational modifications | Use phosphatase/kinase inhibitors in extraction buffers to stabilize modifications. |
| Protein turnover rates | Conduct cycloheximide chase assays to compare protein half-life across tissues. |
| Alternative splicing | Perform isoform-specific RT-PCR alongside Western blotting to correlate transcript and protein variants. |
Include IgG isotype controls and input DNA for baseline normalization.
Validate antibody efficacy via knockout mutant chromatin as a negative control.
Use spike-in chromatin (e.g., Drosophila or yeast) for quantitative cross-experiment comparisons.
Test antigen retrieval methods: heat-induced epitope retrieval (HIER) vs. protease-mediated unmasking.
Compare fixation agents: paraformaldehyde (4% PFA) vs. glutaraldehyde for preserving membrane-associated epitopes.
Validate with genetic complementation lines expressing tagged At2g26730 (e.g., GFP fusion).
Immunogold electron microscopy to localize protein at subcellular resolution.
Co-immunoprecipitation followed by mass spectrometry to identify interaction partners.
CRISPR-Cas9 epitope tagging (e.g., HA/FLAG tags) for parallel detection assays.
Pre-adsorb antibody with E. coli lysates expressing truncated At2g26730 fragments.
Compare signal intensity across developmental stages (e.g., seedlings vs. senescing leaves).
Employ 2D gel electrophoresis to separate isoforms/post-translationally modified variants.
| Tool | Application |
|---|---|
| ABCpred | Linear epitope prediction |
| DiscoTope-3.0 | Conformational epitope modeling |
| IEDB Analysis Resource | Cross-reactivity risk assessment |