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The 3 POLO box Repeats and their Mutations

S.NOUniprot IDProtein Name Sequence LengthPOLO box RegionMutationInvolvement of Repeats in Mutations
1 P53350 Serine/threonine-protein kinase PLK1 60367 67 C->V: In analog-sensitive mutant
enlarged catalytic pocket to accommodate purine analogs
when associated with G-130
82 82 K->M: Loss of kinase activity
82 82 K->R: Loss of kinase activity
130 130 L->G: In analog-sensitive mutant
enlarged catalytic pocket to accommodate purine analogs
when associated with V-67
137 137 S->A: No change in activity
when associated with D-210
137 137 S->D: Increases activity
176 176 D->N: Abolishes kinase activity
194 194 D->A: Does not interfere with FRY-binding
210 210 T->A: Abolishes activity
210 210 T->D: Increases activity and restores recovery after DNA damage checkpoint
210 210 T->V: Reduced catalytic activity, but no effect on affinity for ATP
337 337 R->A: Interferes with ubiquitination and subsequent proteasomal degradation in anaphase
when associated with A-340
340 340 L->A: Interferes with ubiquitination and subsequent proteasomal degradation in anaphase
when associated with A-337
414 414 W->F: Abolishes interaction with CDC25C and reduces centrosomal localization
414 414 W->F: No effect on centrosomal localization, nor on S-phase progression
when asscociated with A-427
when associated with A- 415 and A-427
415 415 V->A: Loss of centrosomal localization and of S-phase progression
when associated with A- 414 and A-427
427 427 L->A: No effect on centrosomal localization, nor on S-phase progression
when associated with A-414
when associated with A- 414 and A-415
492 492 K->R: Severe mitotic defects leading to prometaphase delay
538 538 H->A: In pincer mutant
loss of centrosomal location and decreased interaction with phosphorylated CDC25C and BUB1
when associated with M-540
540 540 K->M: In pincer mutant
loss of centrosomal location and decreased interaction with phosphorylated CDC25C and BUB1
when associated with A-538
Y
2 Q9H4B4 Serine/threonine-protein kinase PLK3 64691 91 K->R: Kinase defective mutant, abolishes activity
203 203 D->A: Kinase defective mutant, abolishes activity
219 219 T->E: Kinase-defective mutant
467 468 467 468 WV->FA: Abolishes localization to the centrosome and ability to induce the G2/M arrest
N
3 Q9NYY3 Serine/threonine-protein kinase PLK2 685210 210 N->A: Loss of kinase activity
503 503 W->F: Impairs localization to the centrosome and centriole duplication
when associated with A-629 and M-631
629 629 H->A: Impairs localization to the centrosome and centriole duplication
when associated with F-503 and M-631
631 631 K->M: Impairs localization to the centrosome and centriole duplication
when associated with F-503 and A-631
Y