Mikail Arslan

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Paraoxonase (PON) was purified and characterized from the Merino and Kivircik sheep's blood serums by a two-step procedure using ammonium sulphate precipitation and Sepharose-4B-L-tyrosine-1-napthylamine hydrophobic interaction chromatography for the first time. On SDS-polyacyrilamide gel electrophoresis, purified human serum paraoxonase yielded a single(More)
The purification of red blood cell carbonic anhydrase (CA, EC from ostrich (scCA) blood is reported, as well as an inhibition study of this enzyme with a series of aromatic and heterocylic sulfonamides. The ostrich enzyme showed a high activity, comparable to that of the human isozyme II, with kcat, of 1.2 x 10(6) s(-1) and kcat/KM of 1.8 x 10(7)(More)
A carbonic anhydrase (CA, EC from red blood cells of pigeons (Columba livia var. domestica), clCA, was purified to homogeneity. Its kinetic parameters for the CO(2) hydration reaction were measured. With a k(cat)/K(m) of 1.1 × 10(8) M(-1) s(-1), and a k(cat) of 1.3 × 10(6) s(-1), clCA has a high activity, similar to that of the human isoform hCA(More)
Paraoxonase 1 (PON1: EC is a calcium-dependent enzyme associated with high-density lipoproteins (HDLs) and has a protective effect against oxidation of low-density lipoproteins (LDLs) in mammals. PON1 is the best-studied member of a family of enzymes called serum paraoxonases, or PONs, identified in mammals and other vertebrates as well as in(More)
In this study, paraoxonase 1 (PON1; EC was purified from bull semen, and some characteristics of the enzyme were investigated. In vitro inhibition effect of some heavy metals, including Cu2+, Mn2+, Cd2+, Zn2+, Ni2+, and Pb2+, on the activity of the purified enzyme was also investigated. The purification of bull semen PON1 procedure was composed of(More)
Serum paraoxonase 1 (EC, PON1), a calcium-associated enzyme, has an ability to hydrolyze organophosphate compounds. Related to this property, PON1 has a critical role in antioxidant mechanisms. It is well-known that the enzyme protects LDL from oxidation. In this study we investigated the in vitro inhibitory effects of some drugs. These drugs are(More)
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