Western Blot
Positive WB detected in Recombinant protein
All lanes: ygcB antibody at 1:2000
Secondary
Goat polyclonal to rabbit IgG at 1/50000 dilution
Predicted band size: 31.8 kDa
Observed band size: 32 kDa
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
貨期:
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity.; Acts as an endonuclease, a 3'-5'exonuclease, and an ATP-dependent dsDNA helicase. Anneals and unwinds R-loops (in which crRNA binds the target DNA, displacing the noncomplementary strand). Unwinding requires ATP, annealing does not. Required along with the Cascade complex for resistance to bacteriophage lambda infection as well as the ability to cure CRISPR-encoding high-copy number plasmid. A Cas3-CasA fusion protein purified with the Cascade complex nicks target plasmid in the presence but not absence of Mg(2+), and degrades plasmid fully in the presence of Mg(2+) and ATP, suggesting the helicase activity is required for complete degradation.
study observed that Cas3 promoted runaway ColE1 plasmid replication, requiring Cas3 helicase activity; Cas3 expression antagonized RNaseHI, observed as a concatamer phenotype, but also required RNaseHI for its ability to stimulate plasmid copy number PMID: 23406879
Cas3 is involved in DNA degradation and invader neutralization. PMID: 22521689
Study discuss possible overlapping roles of Cas3 and Cascade in E. coli, and the apparently antagonistic roles of Cas3 catalysing RNA-DNA annealing and ATP-dependent helicase unwinding. PMID: 21699496
蛋白家族:
CRISPR-associated nuclease Cas3-HD family; CRISPR-associated helicase Cas3 family