'8s rrna' diaporamas de présentation

Chapter 6 RNA post-transcriptional processing

Chapter 6 RNA post-transcriptional processing. RNA Processing. Very few RNA molecules are transcribed directly into the final mature RNA . Most newly transcribed RNA molecules ( primary transcripts ) undergo various alterations to yield the mature product

1.24k views • 96 slides

Chapter 6 RNA post-transcriptional processing

Chapter 6 RNA post-transcriptional processing. RNA Processing. Very few RNA molecules are transcribed directly into the final mature RNA . Most newly transcribed RNA molecules ( primary transcripts ) undergo various alterations to yield the mature product

1.58k views • 96 slides

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818 views • 49 slides

Transcription

Transcription. RNA. DNA. The synthesis of a ribonucleic acid (RNA) polymer from a deoxyribonucleic acid (DNA) template Separates storage from use Provides a control point for regulation Amplification step (can make many RNA copies). H.

665 views • 38 slides

The Transport of Molecules into and out of the Nucleus

The Transport of Molecules into and out of the Nucleus. Through an aqueous channels whose diamenter is adjustable Bidirection: import and export Active and passive transportation Localization signal dependnet. NPC. Nuclear Localization Signals,NLS. microinjection. T-antigen.

511 views • 33 slides

Cyclosporiasis: An Emerging Zoonotic Disease?

Cyclosporiasis: An Emerging Zoonotic Disease?. Proposed Life Cycle. Ingested oocysts excyst in GI tract Sporozoites invade small intestinal epithelial cells Asexual forms 2 different sized merozoites type I meronts (8-12 merozoites) type II meronts (4 merozoites) Sexual forms

401 views • 26 slides

Cyclosporiasis: An Emerging Zoonotic Disease?

Cyclosporiasis: An Emerging Zoonotic Disease?. Proposed Life Cycle. Ingested oocysts excyst in GI tract Sporozoites invade small intestinal epithelial cells Asexual forms 2 different sized merozoites type I meronts (8-12 merozoites) type II meronts (4 merozoites) Sexual forms

364 views • 26 slides

Eukaryotic RNA polymerase 18S+ 30 proteins= 40S

Initiation of rDNA transcription Two transcription factors, UBF and SL1, bind cooperatively to the rDNA promoter and recruit RNA polymerase I to form an initiation complex. One subunit of SL1 is the TATA-binding protein (TBP) and the other is TBP- associated Factor (TAF).

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18S rRNA and Its Use in Fungal Diversity Analysis

18S ribosomal RNA (18S rRNA) is a component of the small eukaryotic ribosomal subunit (40S), and 40S and 60S constitute eukaryotic ribosomes. As a structural RNA for eukaryotic ribosomes, 18S rRNA, the homologue of 16S rRNA in prokaryotes and mitochondria, is thus one of the essential components of all eukaryotic cells. 18S rRNA genes that code for 18S rRNA are widely used in phylogenetic analysis and environmental biodiversity screening.

78 views • 4 slides