CRISPR-U™ technology (CRISPR based), developed by Ubigene, is more efficient than general
CRISPR/Cas9 technology in double-strand breaking and homologous recombination. With CRISPR-U™, Ubigene has
successfully edited over 3000 genes on more than 200 types of cell lines.
Objective
To create a Human DDX21 Knockout
model in cell line by CRISPR-U™-mediated genome engineering.
Target gene info
Official symbol
DDX21
Gene id
9188
Organism
Homo sapiens
Gene type
protein-coding
Official full symbol
DExD-box helicase 21
Also known as
GUA, GURDB, RH-II/GU, RH-II/GuA
Genomic regions
Chromosome 10
Summary
DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which is an antigen recognized by autoimmune antibodies from a patient with watermelon stomach disease. This protein unwinds double-stranded RNA, folds single-stranded RNA, and may play important roles in ribosomal RNA biogenesis, RNA editing, RNA transport, and general transcription.
Strategy Summary
This gene has 0 protein coding transcripts：
Frame-shift
Fragment A
Fragment B
gRNA Detail
Strategy
Project Comprehensive Difficulty Assessment
According to the Red Cotton database: the DDX21 gene is evaluated as high lethality riskin cell line, and the CRISPR gene-editing strategy design is Unknown. Knockout project comprehensive difficulty is thus assessed as Unknown. KO experiment is not recommended.
In all cell lines, there is
0.6% cells with low expression level,
99.4% cells with medium expression level
of DDX21 gene.
Cell line is not selected, unable to assess the accurate expression level, for reference only.
In all cell lines, there is
67.5% cells with low copy number,
30.3% cells with medium copy number,
2.2% cells with high copy number
of DDX21 gene.
Cell line is not selected, unable to assess the accurate copy number, for reference only.
Ubigene is an international high-technology enterprise focused on gene-editing cells. Our exclusive CRISPR-U™ technology has 10-20 times more efficient editing than traditional methods, easily achieving gene knockout, point mutation, and knock-in. Based on CRISPR-U™ technology, Ubigene has accumulated over 6000 successful gene-editing cases from more than 300 cell lines including iPSC and ESC, and has established a KO Cell Line Bank with 4500+ KO cell lines and Red Cotton™ gRNA Plasmid Bank with 10000+ gRNA plasmids available in stock.
Ubigene focuses on technological innovation and product development, of which EZ-editor™ series products that cover the whole workflow of gene-editing keep improving. Ubigene will move on toward our goal of "Make genome editing easier" and we won't stop!
EZ-editor™ Gene Dependency
EZ-editor™ Gene Expression Level 
EZ-editor™ Gene Copy Number 
