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Traduction de l’information génétique

Traduction de l’information génétique. Met. Ile. A. U. A. C. A. U. Asn. U. U. A. Code génétique. Utilisation du code génétique. Transcription: étapes. Transcription: résultat. Transcription: autoradiographie. Localisation dans la cellule. Traduction. initiation. Élongation.

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Traduction de l’information génétique

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  1. Traduction de l’information génétique Met Ile A U A C A U Asn U U A Code génétique Utilisation du code génétique Transcription: étapes Transcription: résultat Transcription: autoradiographie Localisation dans la cellule Traduction initiation Élongation terminaison Sources

  2. Nucléotides 2 ème position Nucléotides 2 ème position T C A G U C A G TTT Phe TCT Ser TAT Tyr TGT Cys UUU Phe UCU Ser UAU Uyr UGU Cys TTC " TCC " TAC " TGC " UUC " UCC " UAC " UGC " TTA Leu TCA " TAA non-sens TGA non-sens UUA Leu UCA " UAA non-sens UGA non-sens T TTG " TCG " TAG non-sens TGG Trp U UUG " UCG " UAG non-sens UGG Trp CTT Leu CCT Pro CAT His CGT Arg CUU Leu CCU Pro CAU His CGU Arg CTC " CCC " CAC " CGC " CUC " CCC " CAC " CGC " Nom de l’acide Abréviation CTA " CCA " CAA Gln CGA " aminé CUA " CCA " CAA Gln CGA " Nucléotides 1 C CTG " CCG " CAG " CGG " C Nucléotides 1 Alanine ala CUG " CCG " CAG " CGG " Arginine arg ATT Ile ACT Thr AAT Asn AGT Ser AUU Ile ACU Thr AAU Asn AGU Ser Asparagine asn ATC " ACC " AAC " AGC " AUC " ACC " AAC " AGC " Ac.Aspartique asp ère ATA " ACA " AAA Lys AGA Arg ère AUA " ACA " AAA Lys AGA Arg Cystéine cys A ATG Met ACG " AAG " AGG " A Glutamine gln AUG Met ACG " AAG " AGG " position Ac.Glutamique glu position GTT Val GCT Ala GAT Asp GGT Gly GUU Val GCU Ala GAU Asp GGU Gly Glycine gly GTC " GCC " GAC " GGC " GUC " GCC " GAC " GGC " Histidine his GTA " GCA " GAA Glu GGA " GUA " GCA " GAA Glu GGA " Isoleucine ile G GTG " GCG " GAG " GGG " G GUG " GCG " GAG " GGG " Leucine leu Lysine lys A: Adénine T: Thymine G: Guanine C: Cytosine A: Adénine U: Uracile G: Guanine C: Cytosine Methionine met Phénylalanine phe Proline pro Serine ser Code génétique pour un ADN Thréonine thr Tryptophane trp Tyrosine tyr Valine val Le code génétique Pour 20 acides aminés 64 codons Code génétique pour un ARN

  3. Nucléotides 2 ème position U C A G UUU Phe UCU Ser UAU Uyr UGU Cys UUC " UCC " UAC " UGC " UUA Leu UCA " UAA non-sens UGA non-sens U UUG " UCG " UAG non-sens UGG Trp CUU Leu CCU Pro CAU His CGU Arg CUC " CCC " CAC " CGC " CUA " CCA " CAA Gln CGA " C Nucléotides 1 CUG " CCG " CAG " CGG " AUU Ile ACU Thr AAU Asn AGU Ser AUC " ACC " AAC " AGC " ère AUA " ACA " AAA Lys AGA Arg A AUG Met ACG " AAG " AGG " position GUU Val GCU Ala GAU Asp GGU Gly GUC " GCC " GAC " GGC " GUA " GCA " GAA Glu GGA " G GUG " GCG " GAG " GGG " Acide aminé Gln= Acide glutamique A: Adénine U: Uracile G: Guanine C: Cytosine Le code génétique: utilisation Exemple Codon CAA Troisième lettre Première lettre Seconde lettre

  4. Sens de la transcription ARN polymérase Brin transcrit Brin non transcrit ARN en cours de transcription Étapes de la transcription ADN

  5. ARN polymérase ARN messager Transcription: résultat Peut recommencer une transcription au début du gène ADN Peut sortir du noyau

  6. ARN polymérase ADN Sens de la transcription Transcription: autoradiographie ARNm Transcription gènes ribosomiaux chez le chironome x40000

  7. Ile Met A Asn U A C A U U U A Localisation des phénomènes dans la cellule Transcription dans le noyau Traduction dans le cytosol

  8. ARNt (de transfert) 2 sous unités du ribosome ARNm (messager) Met Met Ile Ile A A U U A A C C A A U U Asn Asn U U U U A A Traduction: initiation

  9. Liaison peptidique Asn Met Fenêtre P Fenêtre A A U U C A U Met Asn Ile Met Asn A U U U A A C A U A U U Traduction: élongation Translocation

  10. U C G U A U A A C Met Met U A C Asn Asn Leu Leu Ile Ile Ser Ser Ser Ser A U U C A U G A U Traduction:terminaison

  11. Traduction: récapitulation

  12. Sources (6) transcription: wikipedia Transcriptionelektronenmikroskopische Aufnahme ribosomaler Transkriptionseinheiten von Chironumus pallidivitatus. Vergrößerung: 40.000x. Dr. Hans-Heinrich Trepte

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