design-prime-editor-sgrnas

Design pegRNAs and RT templates for prime editing variants.

64|12|Updated Apr 7, 2026
One-click install
npx skills add https://github.com/MDhewei/bioinfor-claw --skill design-prime-editor-sgrnas
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: design-prime-editor-sgrnas
Source: https://github.com/MDhewei/bioinfor-claw/tree/main/crispr-design-and-analysis/design-prime-editor-sgrnas
Command: npx skills add https://github.com/MDhewei/bioinfor-claw --skill design-prime-editor-sgrnas

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, numpy, pandas, matplotlib, and includes scripts (resource) components.

What problem does it solve?

Design pegRNAs (pegRNAs) and nicking sgRNAs for prime editing to enable precise genomic edits with reduced double-strand breaks. Given a target gene and a desired edit, this tool automates identification of PE-compatible protospacers, design of reverse-transcriptase templates and PBS sequences, and scoring of predicted guide efficiency.

Core Features & Use Cases

  • Identify PE-compatible protospacers near the edit site on both DNA strands with customizable PAMs.
  • Design PBS and RT templates and compute PBS melting temperature, followed by efficiency scoring; for PE3, nicking sgRNA candidates are also identified.
  • Output includes a TSV with spacer, PBS, RT template, scores, and optional nicking guides, plus plots for distributions and context visualization.

Quick Start

Supply a gene symbol (or explicit sequence) and the desired edit to receive ranked pegRNA designs and nicking sgRNA options.

Frequently Asked Questions about design-prime-editor-sgrnas

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I design pegRNAs for prime editing on a specific gene?▼

To design pegRNAs for prime editing, provide a target gene symbol or explicit sequence along with the desired edit type (SNV, insertion, or deletion). The tool identifies PE-compatible protospacers, generates PBS and RT templates, and outputs a ranked TSV of guide designs.

What prime editing variants are supported for pegRNA design?▼

pegRNA design supports PE2, PE3, PE3b, and PE-max variants. For PE3 and PE3b, the tool additionally identifies and scores nicking sgRNA candidates to improve editing efficiency alongside the primary pegRNA designs.

Can I use a custom PAM sequence when designing prime editing guides?▼

Yes, custom PAM sequences are supported when designing prime editing guides. You can specify custom PAMs alongside standard genome builds to identify PE-compatible protospacers on both DNA strands near your desired edit site.

What's the best way to score prime editing guide efficiency?▼

Prime editing guide efficiency is scored by computing PBS melting temperature and evaluating RT template characteristics. The resulting ranked designs are output as a TSV file containing spacers, scores, and optional nicking sgRNA candidates.

Does prime editing pegRNA design work for insertion and deletion edits?▼

Prime editing pegRNA design works for SNV, insertion, and deletion edit types. You supply the edit type and target gene to receive ranked pegRNA designs with PBS sequences, RT templates, and efficiency scores.

What outputs do I get from prime editing guide design?▼

Prime editing guide design produces a TSV file with spacer sequences, PBS and RT templates, efficiency scores, and optional nicking sgRNA candidates. It also generates matplotlib plots visualizing score distributions and genomic context.