Journals / Ankara Üniversitesi Tıp Fakültesi Mecmuası / 1998 / Cilt: 51 - Sayı: 4

Partial purification of bovine kidney alanine aminopeptidase

Sığır böbrek alanin aminopeptidazının kısmen saflaştırılması, fizikokimyasal ve kinetik özelliklerinin araştırılması

Pages
181–186
Publication Date
2022-10-10
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Cystein acted as a competetive inhibitör, whereas the inhibition kinetics of ferric chloride was not similar to any of the classical inhibition types.

📌 3 Key Takeaways

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Objective & Hypothesis:Bovine kidney alanine aminopeptidase was purified 121.67 fold and some ofits physicochemical and kinetic properties were investigated.
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Key Findings & Data:The purification procedure included homogenization, ammoniuın sulphate precipitation and Sephadex G-200 gel filtration chro-matography.
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Conclusion & Impact:Cystein acted as a competetive inhibitör, whereas the inhibition kinetics of ferric chloride was not similar to any of the classical inhibition types.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Bovine kidney alanine aminopeptidase was purified 121.67 fold and some ofits physicochemical and kinetic properties were investigated. The purification procedure included homogenization, ammoniuın sulphate precipitation and Sephadex G-200 gel filtration chro-matography. Kinetic studies of the partially purified enzyme revealed the Kın value for L-alanyl-b-naphthylamide to be 4x1 (r5 M. The enzyme had a pH optimum between 6 and 7.4, and optimum temperatures ranged from 37 to 50 °C. Subsequently, some effectors were tried and among them, cystein and feeric chloride were found to be inhibitory, while tetracycline did not show any effect on the enzyme activity. Cystein acted as a competetive inhibitör, whereas the inhibition kinetics of ferric chloride was not similar to any of the classical inhibition types.

Özet

Sığır böbrek alanin aminopeptidazı 121.67 kat saflaş-tırılarak, bazı fizikokimyasal ve kinetik özellikleri ince-lenmiştir. Saflaştırma işlemi, homojenizasyon, amon-yum sülfatla çöktürme ve Sephadex G-200jel filtrasyon kromatografisi basamaklarını kapsamaktadır. Kısmen saflaştırılan enzimle yapılan kinetik çalışma-lar sonucunda enzimin L-alanil-$-naftilamid için Km değeri 4x1 Cr5 M olarak belirlenmiştir. Enzimin fiziko-kimyasal özelliklerine ait deneyler sonucunda, opti-mum sıcaklık aralığı 37-50 °C, optimum pH aralığı ise 6-7.4 olarak bulunmuştur. Enzim üzerinde bazı efektörler de denenmiş, bunlar-dan sisteinin kompetetif inhibisyon yaptığı, ferrik klori-din de inhibitör olduğu ama inhibisyon tipinin klasik tiplere uymadığı, tetrasiklinin ise enzim aktivitesi üzeri-ne hiçbir etkisi olmadığı görülmüştür.

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Cite This Article

ELGÜN, S., GÖKHUN, İ. H. (2022). Partial purification of bovine kidney alanine aminopeptidase. Ankara Üniversitesi Tıp Fakültesi Mecmuası, Cilt: 51 - Sayı: 4, 181–186. https://ajindex.com/articles/444277

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