Molecular Biology Experiment Documentation Template: Structuring Records for Cloning, PCR, and CRISPR Workflows

A molecular biology experiment documentation template adapts the universal experiment record structure — identification, objective, materials, protocol, results, analysis, and review — for the specific experiment types that molecular biology labs run most frequently: cloning, PCR, transformation, sequencing verification, and CRISPR genome editing. Each experiment type has distinct information requirements, and a template that prompts for the right fields at the right time produces more complete, more useful records than a one-size-fits-all form.

This guide provides the experiment-type-specific field sets for the three most common molecular biology workflows: cloning, PCR, and CRISPR. Use these as the starting point for your lab's ELN template configuration.

Cloning Experiment Template Extensions

Beyond the core sections, a cloning experiment record needs:

• Construct design reference: Link to the in silico construct design file (GenBank or SnapGene format) with the specific version. This is the design baseline that the cloning experiment aims to build.
• Cloning strategy: Method (restriction, Gibson, Golden Gate, TOPO/TA), enzymes used, and rationale for method choice.
• Primer table: All primers with full sequences, Tm values, amplicon sizes, and purposes (amplification, screening, sequencing). Attach the primer design output if generated by cloning software.
• Vector and insert details: Vector backbone (name, size, resistance marker, source), insert (source, size, GenBank accession), and the expected final construct size.
• Transformation and screening: Competent cell strain, selection antibiotic, colony counts (experimental and control plates), colony PCR screening results with gel image, and clones selected for sequencing.
• Sequence verification: Link to the sequencing verification record. The cloning record is not complete until the construct is verified — the verification record should be linked, not duplicated.

PCR Experiment Template Extensions

• Template information: Template type (genomic DNA, plasmid, cDNA, colony), source, and concentration.
• Primer pair: Forward and reverse primer names and sequences, calculated Tm for each, expected amplicon size.
• Cycling conditions: Polymerase and buffer, denaturation/annealing/extension temperatures and times, number of cycles. If a gradient PCR was used, record the gradient range and the optimal temperature identified.
• Controls: Positive control (expected to produce a band), negative control (no template), and results for each.
• Gel analysis: Attach labeled gel image with lane descriptions. Note any unexpected bands — they are data, not noise.

CRISPR Experiment Template Extensions

• Guide RNA design: Target gene, species, genomic locus, guide RNA sequence (20-nt protospacer), PAM sequence, and off-target analysis summary with the design tool and version used.
• Oligo and cloning details: Oligo sequences with overhangs, vector backbone, Type IIS enzyme for cloning, and predicted construct map.
• Delivery method: Transfection or transduction method, cell line, selection strategy, and timeline from delivery to analysis.
• Editing efficiency analysis: Method for measuring editing efficiency (T7E1 assay, TIDE analysis, NGS), results, and conclusion on whether the desired edit was achieved.

FAQ

How many experiment-type-specific templates does a molecular biology lab need?

Start with 3-5 templates covering 80% of the lab's experiment types: cloning, PCR, transformation/bacterial culture, sequencing verification, and CRISPR (if applicable). Additional templates for lower-frequency experiment types can be created as needed. Avoid creating a template for every possible variation — a "cloning" template can handle restriction cloning, Gibson assembly, and Golden Gate assembly by making the cloning method a required field that determines which additional fields appear (conditional fields). Zettalab's ZettaNote supports experiment-type-specific templates, so researchers select the relevant template at record creation and the appropriate fields appear.

Conclusion

Molecular biology experiment documentation templates should adapt the universal record structure to the specific information requirements of each experiment type. The field sets for cloning, PCR, and CRISPR described in this guide provide the starting point. Configure these as experiment-type-specific templates in the ELN, use them for 20-30 experiments, then refine based on which fields researchers consistently complete and which they consistently skip. Explore ZettaNote's experiment-type-specific template features for molecular biology labs building structured, complete experiment documentation.