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TtCsm6

Recombinant Thermus thermophilus enzyme TtCsm6 was expressed in E. coli cells using a C-terminal His tag.

CS06-E311H

50 ug100 ug Bulk Customize

$ 140

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Alternate Names:

CRISPR system endoribronuclease Csm6, CRISPR type III-A associated protein Csm6


UniProt Number:


Overview:

TtCsm6 is a single-stranded RNA-specific endoribonuclease protein that consists of the N-terminal CARF domain and the C-terminal HEPN domain. The ribonuclease active site is formed by the HEPN domain dimer and it contributes to the Type-III-A CRISPR-Cas system (1). Upon activation of the CRISPR ancillary ribonucleases Csx1/Csm6, the HEPN active site degrades invasive RNA non-specifically. TtCsm6 is activated by the cyclic oligoadenylate second messengers that was converted from ATP by the Cas10 subunit of the Type III interference complex (2).


Accession Number:


Formulation:

Protein stored in 50mM sodium phosphate, pH 7.5, 300mM NaCl, 150mM imidazole, 1mM DTT, 10% glycerol


References:

1. Niewoehner, O. et al. 2016. Structural basis for the endoribonuclease activity of the type III-A CRISPR-associated protein Csm6. Rna 22(3):318-329.
2. Niewoehner, O. et al. 2017. Type III CRISPR–Cas systems produce cyclic oligoadenylate second messengers. Nature 548(7669): 543-548.

Storage and Stability:

Store at –70°C. To avoid repeated handling and multiple freeze/thaw cycles aliquot diluted product into smaller quantities.


Concentration:

0.2 μg/μl
18.18 pmol/μg


Purity:

>90%


Molecular Weight:

Calculated: 52.7 kDa
Observed: ~50 kDa


Recommendation:

Always include RNase inhibitor at recommended concentrations in Cas enzyme reactions.





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