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Regulation of the eukaryotic cell cycle. Chapter 25 (3rth edition) Chapter 13 (4rth edition)

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Presentation on theme: "Regulation of the eukaryotic cell cycle. Chapter 25 (3rth edition) Chapter 13 (4rth edition)"— Presentation transcript:

1 Regulation of the eukaryotic cell cycle. Chapter 25 (3rth edition) Chapter 13 (4rth edition)

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14 24 Hrs Cell Cycle: G1 = 9 HrsS phase = 10 Hrs G2 = 4.5 Hrsmitosis = 0.5 Hrs.

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31 (APC Specificity Factor)

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36 Cdc2 - Cdc2 D WT

37 Kinase phosphorylates inhibitor y tyrosine (Y15) and Threonine (T14) Phosphatase removes inhibitory phosphates from Y15 and T14

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52 Interphase Prophase Metaphase Anaphase Telophase

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54 Chromosomal Passenger Complex

55 Red: Tubulin; Blue: DNA; Green: Aurora B (CPC); Magenta: Centromere. Bi-oriented chromosome under tension at metaphase.

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66 Cdc20 Cdh1

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71 Clb = Mitotic Cyclins Cln = G1 and G1/S Cyclins

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73 Cells with different bud stages CDK deficiency: Cells w/o buds Separation deficiency: Cells with large bud

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84 Cln3-CDK G1 cyclin - CDK Whi5 SBF/MBF Whi5-P SBF/MBF Cln1/Cln2 Clb5/Clb6 S-phase cyclin – CDK Sic1 Clb6/Clb6 + Sic1-P SCF Phosphorylation pre- replication complexes Cdh1 Cdh1-P DNA polymerase DNA ligase dNTP reductase Sic1-P Poly-ubiquitylation

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86 Clb = Mitotic Cyclins Cln = G1 and G1/S Cyclins

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93 DND stainBrDU stainAnti-cyclin D stain

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99 Entry into the growth cycle by binding of a growth factor to a growth factor receptor

100 (Transcription Factors)

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105 Lee Hartwell et al..

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107 ( end S phase) (end metaphase) (end anaphase)

108 Four checkpoints: 1.Growth Checkpoint. 2.DNA-damage Checkpoints 3.Spindle Assembly Checkpoints 4.Spindle position Checkp[oints.

109 Cell Cycle Yeast

110 Linking cell growth to initiation of cell cycle in S. pombe.

111 Spindle assembly checkpoint

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