R2520

Sigma-Aldrich

Ribonuclease inhibitor human

Inhibits ribonucleases during transcription and translation experiments

MDL number:
NACRES:
NA.52
Pricing and availability is not currently available.

Quality Level

grade

for molecular biology

form

buffered aqueous solution

mol wt

~50 kDa

concentration

30,000-50,000 units/mL

shipped in

dry ice

storage temp.

−20°C

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General description

Ribonuclease inhibitor works to inhibit RNase activity by forming a tight, non-covalent 1:1 complex. It is human placenta. It inhibits RNases A, B, and C. It will not inhibit RNases H, 1, T1, S1 Nuclease, SP6, T7 RNA Polymerase, T3 RNA Polymerase, AMV Reverse Transcriptase, M-MLV Reverse Transcriptase, or Taq Polymerase. The inhibitor can be removed by phenol extraction or by heating to 65°C for 10 minutes.

Application

Useful for in vitro inhibition of ribonucleases, including procedures like cDNA synthesis, RT-PCR, and in vitro transcription and translation.
Suitable for use in
  • in vitro inhibition of ribonucleases
  • cDNA synthesis
  • RT-PCR
  • in vitro transcription and translation

Biochem/physiol Actions

Inhibits RNase by forming a tight, non-covalent 1:1 complex. Also inhibits angiogenin, a neovascularization promoter which is homologous with RNase A.

Components

Ribonuclease Inhibitor is provided as a solution in 20 mM HEPES-KOH( pH 7.6), 50 mM KCl, 8 mM DTT and 50% glycerol.

Other Notes

This inhibitor of RNase activity is isolated from human placenta and supplied as a buffered aqueous glycerol solution.
Solution in 50% glycerol, 20 mM HEPES-KOH, pH 7.6, 50 mM KCl and 8 mM DTT

Unit Definition

One unit will reduce the activity of 5 ng of ribonuclease A by 50% in a cytidine 2′:3′-cyclic monophosphate system.

Physical form

Solution in 50% glycerol, 20 mM HEPES-KOH, pH 7.6, 50 mM KCl and 8 mM DTT

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Sabahattin Kaymakoglu et al.
Antimicrobial agents and chemotherapy, 49(3), 1135-1138 (2005-02-25)
The success of alpha interferon (IFN-alpha) monotherapy for the treatment of chronic hepatitis D is very limited. In this study, the efficacy of IFN-alpha and ribavirin combination therapy for chronic hepatitis D was investigated. Nineteen patients (15 males; mean age...
Ribonuclease inhibitor from human placenta: interaction with derivatives of ribonuclease A.
P Blackburn et al.
The Journal of biological chemistry, 254(24), 12488-12493 (1979-12-25)
Michal Mikula et al.
The Journal of biological chemistry, 286(11), 9763-9775 (2011-01-15)
Components of the ERK cascade are recruited to genes, but it remains unknown how they are regulated at these sites. The RNA-binding protein heterogeneous nuclear ribonucleoprotein (hnRNP) K interacts with kinases and is found along genes including the mitogen-inducible early...
Malia Su-Qin Murphy et al.
American journal of obstetrics and gynecology, 213(3), 367-367 (2015-05-20)
Preeclampsia (PE) is a hypertensive disorder of pregnancy characterized by widespread maternal endothelial dysfunction. Although clinical signs subside following delivery, long-term risks associated with PE include hypertension, stroke, and cardiovascular disease. MicroRNAs (miRNAs) are emerging as critical regulators of biological...

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