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P1-1 Cell diagram 3P 1-1. Chromatin to DNA From chromosome to chromatin to solenoid to DNA.

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Presentation on theme: "P1-1 Cell diagram 3P 1-1. Chromatin to DNA From chromosome to chromatin to solenoid to DNA."— Presentation transcript:

1 P1-1 Cell diagram 3P 1-1

2 Chromatin to DNA From chromosome to chromatin to solenoid to DNA

3 P3-2 Chromosome to DNA 3P3-2 Chromosomes

4 P3-2 Backbone chemistry 3P3-2 1 23 4 5 O 5 3

5 4F4-4

6 3F2-10 4F4-3

7 8-30 chromatin 3F8-30

8 4F4-21 2 linked copies of a chromosome during mitosis Tangle of chromatin spilling out of lysed nucleus

9 Central Dogma Transcription mRNA Gene (DNA) Translation Protein Transcription Reverse Transcription

10

11 exons

12

13 27Kbp 300Kbp Gene Ex1Ex2 Intron1 Intron2 145bp 2500bp 5 ’ UTR 3 ’ UTR JUNK???

14 3-12,13 DNA replication 4F5-5 DNA Synthesis Template, 3’ 5’ New, 5’ 3’ 4F5-3

15 CELL CYCLE: Gap1, Synthesis, Gap2, Mitosis ….

16

17 proteins- chain of AA O -- C NH3+NH3+ H C R1R1 O C NHNH H C R2R2 O C NHNH H C R3R3 O C NHNH H C R4R4 O R1R1 R2R2 R1R1 R2R2 Peptide bond

18 CRAMBIN: N = 46 TTCCPSIVARSNFNVCRLPGTPEALCATYTGCIIIPGATCPGDYAN Peptide bond,crambin

19 3-35 3-35 primary to quaternary

20 4F6-8 4F6-9 3F3-19

21 4F6-6

22 TATA Transcription Start Site G9.17

23 4F6-19

24 The Gene Network of E.Coli: (bacterium, single cell) (U. Alon)

25 p53 CDE / E2F CHR ELK1 NFY CDK4 CDK6 CDKN1A (p21) E2F RB NFY CDKN2A (p16) Mitogens MAPK ELK 1 1.M.Milyevsky,Y.Tabach, ….T.Pilpel,V. Rotter – in vitro 2. C. Rosty,M. Sheffer, D.Tsafrir….in vivo, cervical cancer CDK2 Cervical cancer induced by HPV: two viral oncoproteins (E6,E7) are inserted in DNA and expressed. They inactivate p53 and Rb and induce proliferation Inactivation by E7 binding Degradation Induced by E6

26 4F6-21

27 3-16 Genetic code 3 READING FRAMES

28

29 beta-globin(human)sequences VHLTP(EEKSAVTALW){GK} VN(VDEVGGEALGRLLVV)Y (PWTQRF)F(ESF)GDLST (PDAVM){G}N (PKVKAHGKKVLGAFSDGL) {AH}(LDNLKGTFATLSELHCD) {KL}HVD{P} (ENFRLLGNVLVCVLAHHFGKE)FT (PPVQAAYQKVVAGVANALA) {HK}YH

30 3FtRNA

31 6-8,9 tRNA 6-8,9

32 4F6-653FtRNA

33 4F6-58 4F6-60

34 polyribosome 3F6-28,29

35

36 Central Dogma Transcription mRNA Cells express different subset of the genes In different tissues and under different conditions Gene (DNA) Translation Protein


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