منابع مشابه
Pausing by bacterial RNA polymerase is mediated by mechanistically distinct classes of signals.
Transcript elongation by RNA polymerase is discontinuous and interrupted by pauses that play key regulatory roles. We show here that two different classes of pause signals punctuate elongation. Class I pauses, discovered in enteric bacteria, depend on interaction of a nascent RNA structure with RNA polymerase to displace the 3' OH away from the catalytic center. Class II pauses, which may predo...
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The study concerns how prosody, including pauses, is used to give extra weight to focused words when repeated with successively more emphasis. The analysis is based on the same three-word phrase produced in two different communicative contexts, one a dialogue interaction and one a reading-aloud situation. Results show greater adjustments in the dialogue context. When emphasis was increased, the...
متن کاملPausing Strategies in Children
This study reports on the cross-modal analysis (video and audio) of spontaneous narratives produced by children (9 plus-minus 3 months years old) and is aimed to test the role of speech pauses (filled and empty) in children discourse organization. Video analysis was necessary to assess the association between utterance’s meaning and pauses. Empty speech pauses were divided into three categories...
متن کاملSnapShot: Transcription Regulation: Pausing
Productive elongation Modes of P-TEFb Recruitment: TFs (e.g., MYC, NF-κB) Mediator (Med26 subunit or Cdk8 module) Acetylated histones and Brd4 Other elongation factors as part of the superelongation complex CRE DNA-binding transcription factors (TFs) associate with cis-regulatory elements (CRE) to promote assembly of the PIC. TFs can stimulate PIC formation directly through interactions with th...
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Biochemistry is the study of structures, functions and interactions of biomolecules, such as carbohydrates, nucleic acids, proteins, lipids, etc. and their metabolisms. Advancements in biochemistry helps in the advancement of different fields like agriculture, medicine, nutrition, etc., which are directly related to it. Combination of biochemical techniques with techniques and ideas of genetics...
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ژورنال
عنوان ژورنال: Science
سال: 2002
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.295.5564.2327d