Invitrogen™ Ambion™ DNase I (RNase-free)

Nonspecific endonuclease that degrades double- and single-stranded DNA and chromatin

Catalog Number	Mfr. No.	Quantity
AM2222	Invitrogen™ AM2222	2000 U
AM2224	Invitrogen™ AM2224	5 x 2000 U

Description

DNase I functions by hydrolyzing phosphodiester linkages, producing mono and oligonucleotides with 5'-phosphate and 3'-hydroxyl group. RNase-free DNase I is recommended to degrade DNA in presence of RNA, in absence of RNase is critical to maintain integrity of RNA. For example, DNase I is frequently used to remove template DNA following in vitro transcription, and to remove contaminating DNA in total RNA preparations (especially those from transfected cells that may contain plasmid DNA), used for ribonuclease protection assays, cDNA library contraction, and RT-PCR.

• Tested for contaminating RNase and protease activity
• Functionality is determined by digestion of human genomic DNA followed by quantitative real-time PCR to detect undigested DNA
• Requires bivalent cations (Mg²⁺ and Ca²⁺ at approximately 5mM and 0.5mM, respectively) for maximal activity, and has a pH optimum of 7.8
• Unit definition: One unit is amount of enzyme required to completely degrade 1μg DNA in 10 min. at 37°C, and is equivalent to 0.04 Kunitz units

For an alternative to bovine DNase I, please consider Recombinant DNase I (Mfr. No. AM2235). For a more active, salt-tolerant DNase, please see the TURBO™ DNase products (Mfr. Nos. AM2239 and AM2238).

PCR & Real-Time PCR, Real Time PCR (qPCR), Reverse Transcription

Order Info

Shipping Conditions: Dry ice

Specifications

• Content And Storage: -20°C
• Enzyme: DNase
• Product Line: Ambion™

• Shipping Condition: Dry Ice
• Product Type: DNase I

For Research Use Only. Not for use in diagnostic procedures.