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Date: 29-12-2015
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Date: 16-12-2015
1870
Date: 22-3-2021
1623
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bZip Domain
The bZip DNA binding domain and the closely related helix-loop-helix (HLH) domain are found in many eukaryotic transcription factors. Both bind in the major groove of DNA and have the capability of forming homo- or heterodimers with proteins of the same class. The simplest of these domains is the bZip domain which, when bound to DNA, forms a continuous a-helix. The lower basic part of this helix (the b of bZip) forms sequence specific contacts with DNA whereas the upper part can dimerize with an appropriate partner through the formation of a leucine zipper. The dimer thus has the appearance of a pair of scissors binding to a palindromic DNA sequence in which each half-site is exposed on the opposite face of DNA. The helix-loop-helix domain binds to DNA in a similar manner with the difference that the a-helix involved in dimerization is separated from the DNA binding a-helix by a short loop.
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حمية العقل.. نظام صحي لإطالة شباب دماغك
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إيرباص تكشف عن نموذج تجريبي من نصف طائرة ونصف هليكوبتر
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بمشاركة 60 ألف طالب.. المجمع العلمي يستعدّ لإطلاق مشروع الدورات القرآنية الصيفية
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صدور العدد الـ 33 من مجلة (الاستغراب) المحكمة
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المجمع العلمي ينظّم ورشة تطويرية لأساتذة الدورات القرآنية في كربلاء
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شعبة التوجيه الديني النسوي تختتم دورتها الثانية لتعليم مناسك الحجّ
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