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Farid Shokry Ataya

Associate Professor

Teaching Staff Member

كلية العلوم
2A26 Building 5
المنشورات
مقال فى مجلة
2016
تم النشر فى:

6. Fereniki Perperopoulou, Farid S. Ataya, Dalia Fouad, Ajamaluddin Malik, Hesham M. Saeed, Nikolaos E. Labrou. Biochemical characterization of the detoxifying enzyme glutathione transferase P1-1 from the camel Camelus dromedarius

, . Perperopoulou F, Ataya FS, Fouad D, Saeed HM, Labrou NE . 2016

 

Abstract

Glutathione transferase (GST, EC 2.5.1.18) is a primary line of defense against toxicities of electrophile compounds and oxidative stress and therefore is involved in stress-response and cell detoxification. In the present study, we investigated the catalytic and structural properties of the glutathione transferase (GST) isoenzyme P1-1 from Camelus dromedarius (CdGSTP1-1). Recombinant CdGSTP1-1 was produced in Escherichia coli BL21(DE3) and purified to electrophoretic homogeneity. Kinetic analysis revealed that CdGSTP1-1 displays broad substrate specificity and shows high activity towards halogenated aryl-compounds, isothiocyanates and hydroperoxides. Computation analysis and structural comparison of the catalytic and ligand binding sites of CdGSTP1-1 with other pi class GSTs allowed the identification of major structural variations that affect the active site pocket and the catalytic mechanism., Affinity labeling and kinetic inhibition studies identified key regions that form the ligandin-binding site (L-site) and gave further insights into the mechanism of non-substrate ligand recognition. The results of the present study provide new information into camelid detoxifying mechanism and new knowledge into the diversity and complex enzymatic functions of GST superfamily.

نوع عمل المنشور
Research paper
رقم المجلد
4
رقم الانشاء
74
مجلة/صحيفة
Cell Biochemistry and Biophysics (Impact factor 1.6) ISSN: 1085-9195
الصفحات
459-472.
مزيد من المنشورات
publications

Glutathione S. transferases (GSTs; EC. 2.5.1.18) are a large family of multifunctional enzymes that play crucial roles in the metabolism and inactivation of a broad range of xenobiotic compounds.…

بواسطة Fereniki Perperopoulou, Nirmal Poudel, Anastassios C. Papageorgiou, Farid Ataya and Nikolaos E
2022
تم النشر فى:
MPDI
publications

Background: In the wake of the warning by WHO that the prevalence of dementia may have a rise of 125% in the Middle East by 2050, identification of the genetic risk factors in Arab populations is…

بواسطة Saba Abdi, Amani Ahmed Alghamdi, Nouf Nasser Abduallah AlGhunaim, Reem Muteb Almutairi, Farid Shokry Ataya, Mohammed Ghouse Ahmed Ansari, Syed Danish Hussain, Mohammad Masoud, Abir Alamro,Othman T. Almutairi, Nasser M. Al-Daghri, Taim Abdullah Muayqil
2022
تم النشر فى:
Current Pharmaceutical Biotechnology