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রেস্ট্রিকশন এনজাইম বলতে কী বোঝ?

Md. Saifur Rahman

যে এনজাইম প্রয়োগ করে DNA অণুর সুনির্দিষ্ট অংশ কর্তন করা যায় তাকে রেস্ট্রিকশন এনজাইম বলে। একটি নির্দিষ্ট রেস্ট্রিকশন এনজাইম দ্বারা DNA এর সুনির্দিষ্ট অংশ কাটা যায়। এরা সাধারণত ৪ - ৬ জোড়া বেস কেটে থাকে। বিভিন্ন ধরনের ব্যাকটেরিয়া থেকে এ পর্যন্ত প্রায় ২৫০টি রেস্ট্রিকশন এনজাইম পৃথক করা হয়েছে।

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