D4138
Deoxyribonuclease II from porcine spleen
Type IV, lyophilized powder, 2,000-6,000 Kunitz units/mg protein (biuret)
Synonym(s):
DNase II, Deoxyribonucleate 3′-oligonucleotido-hydrolase
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About This Item
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type
Type IV
Quality Level
form
lyophilized powder
specific activity
2,000-6,000 Kunitz units/mg protein (biuret)
mol wt
45 kDa
composition
Protein, 60-80%
foreign activity
RNase ≤0.05%
storage temp.
−20°C
Application
DNase II from Sigma has been used to treat transformed cells during the purification of β-lactamase. It has also been used for the preparation of adenoma tissue in a study that investigated the effect of somatoprim on growth hormone secretion in human adenoma cell cultures (hSA).
Deoxyribonuclease II from porcine spleen has been used in an immunohistological study of the immune system cells in paraffin-embedded tissues. Deoxyribonuclease II from porcine spleen has also been used in a study to investigate its reassociation with the lysosomal membrane.
Biochem/physiol Actions
The enzyme is a lysosomal acid hydrolase that hydrolyzes DNA to 3′-phosphoryl oligonucleotides in the absence of metal ions, under acidic conditions. It is a non-covalently linked α·β heterodimer of approximately 45,000 Da molecular mass.
Unit Definition
One Kunitz unit will produce a ΔA260 of 0.001 per min per mL at pH 4.6 at 25°C; [Mg2+] = 0.83 mM
Physical form
Contains sodium chloride
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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F Chianini et al.
Veterinary immunology and immunopathology, 82(3-4), 245-255 (2001-10-06)
The distribution of different cells of the immune system has been studied in formalin-fixed paraffin-embedded tissues from conventionally reared healthy pigs, using immunohistological techniques. The samples collected were: lungs, tonsils, lymph nodes (mediastinal, mesenteric, inguinal and submandibular), pancreas, spleen, liver
Yoko Kato-Toma et al.
The Biochemical journal, 371(Pt 1), 175-181 (2003-01-07)
13C-NMR spectroscopy was used to estimate the p K a values for the Tyr(150) (Y150) residue in wild-type and mutant class C beta-lactamases. The tyrosine residues of the wild-type and mutant lactamases were replaced with (13)C-labelled L-tyrosine ([ phenol -4-(13)C]tyrosine)
Lars Holmgren
Biochemical and biophysical research communications, 396(1), 147-151 (2010-05-25)
Horizontal or lateral gene transfer is an effective mechanism for the exchange of genetic information in bacteria allowing bacterial diversification and facilitating adaptation to new environments. Recent data demonstrate that DNA may also be transferred between somatic cells via the
U Plöckinger et al.
European journal of endocrinology, 166(2), 223-234 (2011-11-09)
Somatostatin analogues (SSA) reduce autonomous GH secretion by activating somatostatin receptors (sst) 2 and 5 in 50-60% of acromegalic patients. However, by inhibiting insulin secretion these SSA reduce glucose tolerance. DG3173 is a novel SSA with additional binding to sst4
T H Liao
The Journal of biological chemistry, 260(19), 10708-10713 (1985-09-05)
An acid DNase (DNase II) from porcine spleen was purified by sequential chromatography over carboxymethyl-cellulose, blue dextran-Sepharose, hydroxylapatite, and sulfoxyethyl-cellulose. The purified enzyme shows two polypeptide bands on sodium dodecyl sulfate-polyacrylamide gel electrophoresis at Mr 35,000 (alpha chain) and 10,000
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