PLK1_RAT
ID PLK1_RAT Reviewed; 603 AA.
AC Q62673; F1LNH6; Q5XHX4;
DT 11-JAN-2001, integrated into UniProtKB/Swiss-Prot.
DT 14-DEC-2011, sequence version 2.
DT 03-AUG-2022, entry version 178.
DE RecName: Full=Serine/threonine-protein kinase PLK1;
DE EC=2.7.11.21;
DE AltName: Full=Polo-like kinase 1;
DE Short=PLK-1;
GN Name=Plk1; Synonyms=Plk;
OS Rattus norvegicus (Rat).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae;
OC Murinae; Rattus.
OX NCBI_TaxID=10116;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Pancreas;
RA Amstrup J., Hansen J.A., Hxirlis Nielsen J.;
RL Submitted (MAY-1994) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Testis;
RX PubMed=15489334; DOI=10.1101/gr.2596504;
RG The MGC Project Team;
RT "The status, quality, and expansion of the NIH full-length cDNA project:
RT the Mammalian Gene Collection (MGC).";
RL Genome Res. 14:2121-2127(2004).
CC -!- FUNCTION: Serine/threonine-protein kinase that performs several
CC important functions throughout M phase of the cell cycle, including the
CC regulation of centrosome maturation and spindle assembly, the removal
CC of cohesins from chromosome arms, the inactivation of anaphase-
CC promoting complex/cyclosome (APC/C) inhibitors, and the regulation of
CC mitotic exit and cytokinesis. Polo-like kinase proteins acts by binding
CC and phosphorylating proteins are that already phosphorylated on a
CC specific motif recognized by the POLO box domains. Phosphorylates BORA,
CC BUB1B/BUBR1, CCNB1, CDC25C, CEP55, ECT2, ERCC6L, FBXO5/EMI1, FOXM1,
CC KIF20A/MKLP2, CENPU, NEDD1, NINL, NPM1, NUDC, PKMYT1/MYT1, KIZ,
CC PPP1R12A/MYPT1, PRC1, RACGAP1/CYK4, SGO1, STAG2/SA2, TEX14, TOPORS,
CC p73/TP73, TPT1, WEE1 and HNRNPU. Plays a key role in centrosome
CC functions and the assembly of bipolar spindles by phosphorylating KIZ,
CC NEDD1 and NINL. NEDD1 phosphorylation promotes subsequent targeting of
CC the gamma-tubulin ring complex (gTuRC) to the centrosome, an important
CC step for spindle formation. Phosphorylation of NINL component of the
CC centrosome leads to NINL dissociation from other centrosomal proteins.
CC Involved in mitosis exit and cytokinesis by phosphorylating CEP55,
CC ECT2, KIF20A/MKLP2, CENPU, PRC1 and RACGAP1. Recruited at the central
CC spindle by phosphorylating and docking PRC1 and KIF20A/MKLP2; creates
CC its own docking sites on PRC1 and KIF20A/MKLP2 by mediating
CC phosphorylation of sites subsequently recognized by the POLO box
CC domains. Phosphorylates RACGAP1, thereby creating a docking site for
CC the Rho GTP exchange factor ECT2 that is essential for the cleavage
CC furrow formation. Promotes the central spindle recruitment of ECT2.
CC Plays a central role in G2/M transition of mitotic cell cycle by
CC phosphorylating CCNB1, CDC25C, FOXM1, CENPU, PKMYT1/MYT1,
CC PPP1R12A/MYPT1 and WEE1. Part of a regulatory circuit that promotes the
CC activation of CDK1 by phosphorylating the positive regulator CDC25C and
CC inhibiting the negative regulators WEE1 and PKMYT1/MYT1. Also acts by
CC mediating phosphorylation of cyclin-B1 (CCNB1) on centrosomes in
CC prophase. Phosphorylates FOXM1, a key mitotic transcription regulator,
CC leading to enhance FOXM1 transcriptional activity. Involved in
CC kinetochore functions and sister chromatid cohesion by phosphorylating
CC BUB1B/BUBR1, FBXO5/EMI1 and STAG2/SA2. PLK1 is high on non-attached
CC kinetochores suggesting a role of PLK1 in kinetochore attachment or in
CC spindle assembly checkpoint (SAC) regulation. Required for kinetochore
CC localization of BUB1B. Regulates the dissociation of cohesin from
CC chromosomes by phosphorylating cohesin subunits such as STAG2/SA2.
CC Phosphorylates SGO1: required for spindle pole localization of isoform
CC 3 of SGO1 and plays a role in regulating its centriole cohesion
CC function. Mediates phosphorylation of FBXO5/EMI1, a negative regulator
CC of the APC/C complex during prophase, leading to FBXO5/EMI1
CC ubiquitination and degradation by the proteasome. Acts as a negative
CC regulator of p53 family members: phosphorylates TOPORS, leading to
CC inhibit the sumoylation of p53/TP53 and simultaneously enhance the
CC ubiquitination and subsequent degradation of p53/TP53. Phosphorylates
CC the transactivation domain of the transcription factor p73/TP73,
CC leading to inhibit p73/TP73-mediated transcriptional activation and
CC pro-apoptotic functions. Phosphorylates BORA, and thereby promotes the
CC degradation of BORA. Contributes to the regulation of AURKA function.
CC Also required for recovery after DNA damage checkpoint and entry into
CC mitosis.Phosphorylates MISP, leading to stabilization of cortical and
CC astral microtubule attachments required for proper spindle positioning.
CC Together with MEIKIN, acts as a regulator of kinetochore function
CC during meiosis I: required both for mono-orientation of kinetochores on
CC sister chromosomes and protection of centromeric cohesin from separase-
CC mediated cleavage. Phosphorylates CEP68 and is required for its
CC degradation. Regulates nuclear envelope breakdown during prophase by
CC phosphorylating DCTN1 resulting in its localization in the nuclear
CC envelope. Phosphorylates the heat shock transcription factor HSF1,
CC promoting HSF1 nuclear translocation upon heat shock. Phosphorylates
CC HSF1 also in the early mitotic period; this phosphorylation regulates
CC HSF1 localization to the spindle pole, the recruitment of the SCF(BTRC)
CC ubiquitin ligase complex induicing HSF1 degradation, and hence mitotic
CC progression. Regulates mitotic progression by phosphorylating RIOK2 (By
CC similarity). Through the phosphorylation of DZIP1 regulates the
CC localization during mitosis of the BBSome, a ciliary protein complex
CC involved in cilium biogenesis (By similarity).
CC {ECO:0000250|UniProtKB:P53350, ECO:0000250|UniProtKB:Q07832}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-
CC [protein]; Xref=Rhea:RHEA:17989, Rhea:RHEA-COMP:9863, Rhea:RHEA-
CC COMP:11604, ChEBI:CHEBI:15378, ChEBI:CHEBI:29999, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:83421, ChEBI:CHEBI:456216; EC=2.7.11.21;
CC Evidence={ECO:0000250|UniProtKB:P53350};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-
CC threonyl-[protein]; Xref=Rhea:RHEA:46608, Rhea:RHEA-COMP:11060,
CC Rhea:RHEA-COMP:11605, ChEBI:CHEBI:15378, ChEBI:CHEBI:30013,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:61977, ChEBI:CHEBI:456216;
CC EC=2.7.11.21; Evidence={ECO:0000250|UniProtKB:P53350};
CC -!- ACTIVITY REGULATION: Activated by phosphorylation of Thr-210 by AURKA;
CC phosphorylation by AURKA is enhanced by BORA. Once activated, activity
CC is stimulated by binding target proteins. Binding of target proteins
CC has no effect on the non-activated kinase. Several inhibitors targeting
CC PLKs are currently in development and are under investigation in a
CC growing number of clinical trials, such as BI 2536, an ATP-competitive
CC PLK1 inhibitor or BI 6727, a dihydropteridinone that specifically
CC inhibits the catalytic activity of PLK1 (By similarity).
CC {ECO:0000250|UniProtKB:P53350}.
CC -!- SUBUNIT: Interacts with CEP170 and EVI5. Interacts and phosphorylates
CC ERCC6L. Interacts with FAM29A. Interacts with SLX4/BTBD12 and TTDN1.
CC Interacts with BUB1B. Interacts (via POLO-box domain) with the
CC phosphorylated form of BUB1, CENPU and CDC25C. Interacts with isoform 3
CC of SGO1. Interacts with BORA, KIF2A and AURKA. Interacts with TOPORS
CC and CYLD. Interacts with ECT2; the interaction is stimulated upon
CC phosphorylation of ECT2 on 'Thr-444'. Interacts with PRC1. Interacts
CC with KIF20A/MKLP2 (when phosphorylated), leading to the recruitment at
CC the central spindle. Interacts (via POLO box domains) with
CC PPP1R12A/MYPT1 (when previously phosphorylated by CDK1). Part of an
CC astrin (SPAG5)-kinastrin (SKAP) complex containing KNSTRN, SPAG5, PLK1,
CC DYNLL1 and SGO2. Interacts with BIRC6/bruce. Interacts with CDK1-
CC phosphorylated FRY; this interaction occurs in mitotic cells, but not
CC in interphase cells. FRY interaction facilitates AURKA-mediated PLK1
CC phosphorylation. Interacts with CDK1-phosphorylated DCTN6 during
CC mitotic prometaphase; the interaction facilitates recruitment to
CC kinetochores. Interacts with CEP68; the interaction phosphorylates
CC CEP68. Interacts (via POLO-box domain) with DCTN1. Interacts with CEP20
CC in later G1, S, G2 and M phases of the cell cycle; this interaction
CC recruits PLK1 to centrosomes, a step required for S phase progression.
CC Interacts with HSF1; this interaction increases upon heat shock but
CC does not modulate neither HSF1 homotrimerization nor DNA-binding
CC activities. Interacts with HNRNPU; this interaction induces
CC phosphorylation of HNRNPU in mitosis. Interacts (via its N-terminus)
CC with RIOK2 (By similarity). Interacts with KLHL22 (By similarity).
CC {ECO:0000250|UniProtKB:P53350}.
CC -!- SUBCELLULAR LOCATION: Nucleus {ECO:0000250|UniProtKB:P53350}.
CC Chromosome, centromere, kinetochore {ECO:0000250|UniProtKB:P53350}.
CC Cytoplasm, cytoskeleton, microtubule organizing center, centrosome
CC {ECO:0000250|UniProtKB:P53350}. Cytoplasm, cytoskeleton, spindle
CC {ECO:0000250|UniProtKB:P53350}. Midbody {ECO:0000250|UniProtKB:P53350}.
CC Note=localization at the centrosome starts at the G1/S transition (By
CC similarity). During early stages of mitosis, the phosphorylated form is
CC detected on centrosomes and kinetochores. Localizes to the outer
CC kinetochore. Presence of SGO1 and interaction with the phosphorylated
CC form of BUB1 is required for the kinetochore localization. Localizes
CC onto the central spindle by phosphorylating and docking at midzone
CC proteins KIF20A/MKLP2 and PRC1 (By similarity). Colocalizes with FRY to
CC separating centrosomes and spindle poles from prophase to metaphase in
CC mitosis, but not in other stages of the cell cycle (By similarity).
CC Localization to the centrosome is required for S phase progression (By
CC similarity). Colocalizes with HSF1 at the spindle poles during
CC prometaphase (By similarity). {ECO:0000250|UniProtKB:P53350}.
CC -!- DOMAIN: The POLO box domains act as phosphopeptide-binding module that
CC recognize and bind serine-[phosphothreonine/phosphoserine]-(proline/X)
CC motifs. PLK1 recognizes and binds docking proteins that are already
CC phosphorylated on these motifs, and then phosphorylates them. PLK1 can
CC also create its own docking sites by mediating phosphorylation of
CC serine-[phosphothreonine/phosphoserine]-(proline/X) motifs subsequently
CC recognized by the POLO box domains (By similarity).
CC {ECO:0000250|UniProtKB:P53350}.
CC -!- PTM: Catalytic activity is enhanced by phosphorylation of Thr-210.
CC Phosphorylation at Thr-210 is first detected on centrosomes in the G2
CC phase of the cell cycle, peaks in prometaphase and gradually disappears
CC from centrosomes during anaphase. Dephosphorylation at Thr-210 at
CC centrosomes is probably mediated by protein phosphatase 1C (PP1C), via
CC interaction with PPP1R12A/MYPT1. Autophosphorylation and
CC phosphorylation of Ser-137 may not be significant for the activation of
CC PLK1 during mitosis, but may enhance catalytic activity during recovery
CC after DNA damage checkpoint. Phosphorylated in vitro by STK10 (By
CC similarity). {ECO:0000250|UniProtKB:P53350}.
CC -!- PTM: Ubiquitinated by the anaphase promoting complex/cyclosome (APC/C)
CC in anaphase and following DNA damage, leading to its degradation by the
CC proteasome. Ubiquitination is mediated via its interaction with
CC FZR1/CDH1. Ubiquitination and subsequent degradation prevents entry
CC into mitosis and is essential to maintain an efficient G2 DNA damage
CC checkpoint. Monoubiquitination at Lys-492 by the BCR(KLHL22) ubiquitin
CC ligase complex does not lead to degradation: it promotes PLK1
CC dissociation from phosphoreceptor proteins and subsequent removal from
CC kinetochores, allowing silencing of the spindle assembly checkpoint
CC (SAC) and chromosome segregation (By similarity).
CC {ECO:0000250|UniProtKB:P53350}.
CC -!- SIMILARITY: Belongs to the protein kinase superfamily. Ser/Thr protein
CC kinase family. CDC5/Polo subfamily. {ECO:0000255|PROSITE-
CC ProRule:PRU00159}.
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DR EMBL; U10188; AAA18885.1; -; mRNA.
DR EMBL; BC083926; AAH83926.1; -; mRNA.
DR RefSeq; NP_058796.1; NM_017100.1.
DR AlphaFoldDB; Q62673; -.
DR SMR; Q62673; -.
DR STRING; 10116.ENSRNOP00000025629; -.
DR iPTMnet; Q62673; -.
DR PhosphoSitePlus; Q62673; -.
DR jPOST; Q62673; -.
DR PaxDb; Q62673; -.
DR GeneID; 25515; -.
DR KEGG; rno:25515; -.
DR UCSC; RGD:3352; rat.
DR CTD; 5347; -.
DR RGD; 3352; Plk1.
DR eggNOG; KOG0575; Eukaryota.
DR InParanoid; Q62673; -.
DR OrthoDB; 507604at2759; -.
DR BRENDA; 2.7.11.21; 5301.
DR Reactome; R-RNO-141444; Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal.
DR Reactome; R-RNO-156711; Polo-like kinase mediated events.
DR Reactome; R-RNO-162658; Golgi Cisternae Pericentriolar Stack Reorganization.
DR Reactome; R-RNO-174178; APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1.
DR Reactome; R-RNO-176412; Phosphorylation of the APC/C.
DR Reactome; R-RNO-176417; Phosphorylation of Emi1.
DR Reactome; R-RNO-2299718; Condensation of Prophase Chromosomes.
DR Reactome; R-RNO-2467813; Separation of Sister Chromatids.
DR Reactome; R-RNO-2500257; Resolution of Sister Chromatid Cohesion.
DR Reactome; R-RNO-2565942; Regulation of PLK1 Activity at G2/M Transition.
DR Reactome; R-RNO-2980767; Activation of NIMA Kinases NEK9, NEK6, NEK7.
DR Reactome; R-RNO-380259; Loss of Nlp from mitotic centrosomes.
DR Reactome; R-RNO-380270; Recruitment of mitotic centrosome proteins and complexes.
DR Reactome; R-RNO-380284; Loss of proteins required for interphase microtubule organization from the centrosome.
DR Reactome; R-RNO-380320; Recruitment of NuMA to mitotic centrosomes.
DR Reactome; R-RNO-5620912; Anchoring of the basal body to the plasma membrane.
DR Reactome; R-RNO-5663220; RHO GTPases Activate Formins.
DR Reactome; R-RNO-68877; Mitotic Prometaphase.
DR Reactome; R-RNO-68881; Mitotic Metaphase/Anaphase Transition.
DR Reactome; R-RNO-68884; Mitotic Telophase/Cytokinesis.
DR Reactome; R-RNO-69273; Cyclin A/B1/B2 associated events during G2/M transition.
DR Reactome; R-RNO-8852276; The role of GTSE1 in G2/M progression after G2 checkpoint.
DR Reactome; R-RNO-8854518; AURKA Activation by TPX2.
DR Reactome; R-RNO-9648025; EML4 and NUDC in mitotic spindle formation.
DR PRO; PR:Q62673; -.
DR Proteomes; UP000002494; Unplaced.
DR GO; GO:0034451; C:centriolar satellite; ISO:RGD.
DR GO; GO:0005814; C:centriole; ISO:RGD.
DR GO; GO:0005813; C:centrosome; ISS:UniProtKB.
DR GO; GO:0000785; C:chromatin; ISO:RGD.
DR GO; GO:0000775; C:chromosome, centromeric region; ISO:RGD.
DR GO; GO:0000779; C:condensed chromosome, centromeric region; ISO:RGD.
DR GO; GO:0005737; C:cytoplasm; IDA:RGD.
DR GO; GO:0000776; C:kinetochore; ISS:UniProtKB.
DR GO; GO:0015630; C:microtubule cytoskeleton; ISO:RGD.
DR GO; GO:0030496; C:midbody; ISS:UniProtKB.
DR GO; GO:0097431; C:mitotic spindle pole; ISO:RGD.
DR GO; GO:0005634; C:nucleus; IDA:RGD.
DR GO; GO:0000940; C:outer kinetochore; ISO:RGD.
DR GO; GO:0005819; C:spindle; ISS:UniProtKB.
DR GO; GO:0051233; C:spindle midzone; IDA:RGD.
DR GO; GO:0000922; C:spindle pole; IDA:RGD.
DR GO; GO:0000795; C:synaptonemal complex; ISO:RGD.
DR GO; GO:0010997; F:anaphase-promoting complex binding; ISO:RGD.
DR GO; GO:0005524; F:ATP binding; ISO:RGD.
DR GO; GO:0042802; F:identical protein binding; ISO:RGD.
DR GO; GO:0000287; F:magnesium ion binding; ISO:RGD.
DR GO; GO:0008017; F:microtubule binding; ISS:UniProtKB.
DR GO; GO:0004672; F:protein kinase activity; ISO:RGD.
DR GO; GO:0019901; F:protein kinase binding; ISO:RGD.
DR GO; GO:0106310; F:protein serine kinase activity; IEA:RHEA.
DR GO; GO:0004674; F:protein serine/threonine kinase activity; ISS:UniProtKB.
DR GO; GO:0007098; P:centrosome cycle; ISS:UniProtKB.
DR GO; GO:0000132; P:establishment of mitotic spindle orientation; ISO:RGD.
DR GO; GO:0045184; P:establishment of protein localization; ISO:RGD.
DR GO; GO:0016321; P:female meiosis chromosome segregation; ISO:RGD.
DR GO; GO:0000086; P:G2/M transition of mitotic cell cycle; ISS:UniProtKB.
DR GO; GO:0045143; P:homologous chromosome segregation; ISO:RGD.
DR GO; GO:0001578; P:microtubule bundle formation; ISS:UniProtKB.
DR GO; GO:0000278; P:mitotic cell cycle; ISS:UniProtKB.
DR GO; GO:0000281; P:mitotic cytokinesis; ISS:UniProtKB.
DR GO; GO:0007095; P:mitotic G2 DNA damage checkpoint signaling; ISS:UniProtKB.
DR GO; GO:0000070; P:mitotic sister chromatid segregation; ISS:UniProtKB.
DR GO; GO:0007094; P:mitotic spindle assembly checkpoint signaling; ISS:UniProtKB.
DR GO; GO:0043066; P:negative regulation of apoptotic process; ISS:UniProtKB.
DR GO; GO:0045736; P:negative regulation of cyclin-dependent protein serine/threonine kinase activity; ISO:RGD.
DR GO; GO:0000122; P:negative regulation of transcription by RNA polymerase II; ISS:UniProtKB.
DR GO; GO:0051081; P:nuclear membrane disassembly; ISS:UniProtKB.
DR GO; GO:0018105; P:peptidyl-serine phosphorylation; ISO:RGD.
DR GO; GO:0040038; P:polar body extrusion after meiotic divisions; IMP:RGD.
DR GO; GO:0010800; P:positive regulation of peptidyl-threonine phosphorylation; ISO:RGD.
DR GO; GO:0032436; P:positive regulation of proteasomal ubiquitin-dependent protein catabolic process; ISS:UniProtKB.
DR GO; GO:0045862; P:positive regulation of proteolysis; ISO:RGD.
DR GO; GO:1904668; P:positive regulation of ubiquitin protein ligase activity; ISS:UniProtKB.
DR GO; GO:0051443; P:positive regulation of ubiquitin-protein transferase activity; ISS:UniProtKB.
DR GO; GO:0031648; P:protein destabilization; ISO:RGD.
DR GO; GO:0071168; P:protein localization to chromatin; ISS:UniProtKB.
DR GO; GO:0090435; P:protein localization to nuclear envelope; ISS:UniProtKB.
DR GO; GO:0033365; P:protein localization to organelle; ISO:RGD.
DR GO; GO:0006468; P:protein phosphorylation; IGI:MGI.
DR GO; GO:0016567; P:protein ubiquitination; ISO:RGD.
DR GO; GO:0032465; P:regulation of cytokinesis; ISO:RGD.
DR GO; GO:0007346; P:regulation of mitotic cell cycle; ISO:RGD.
DR GO; GO:0030071; P:regulation of mitotic metaphase/anaphase transition; ISO:RGD.
DR GO; GO:1901673; P:regulation of mitotic spindle assembly; ISO:RGD.
DR GO; GO:0043393; P:regulation of protein binding; ISO:RGD.
DR GO; GO:1904776; P:regulation of protein localization to cell cortex; ISO:RGD.
DR GO; GO:0046677; P:response to antibiotic; IEP:RGD.
DR GO; GO:0070194; P:synaptonemal complex disassembly; ISO:RGD.
DR CDD; cd13118; POLO_box_1; 1.
DR CDD; cd13117; POLO_box_2; 1.
DR CDD; cd14187; STKc_PLK1; 1.
DR Gene3D; 3.30.1120.30; -; 2.
DR InterPro; IPR011009; Kinase-like_dom_sf.
DR InterPro; IPR033702; PLK1_cat.
DR InterPro; IPR033701; POLO_box_1.
DR InterPro; IPR033695; POLO_box_2.
DR InterPro; IPR000959; POLO_box_dom.
DR InterPro; IPR036947; POLO_box_dom_sf.
DR InterPro; IPR000719; Prot_kinase_dom.
DR InterPro; IPR017441; Protein_kinase_ATP_BS.
DR InterPro; IPR008271; Ser/Thr_kinase_AS.
DR Pfam; PF00069; Pkinase; 1.
DR Pfam; PF00659; POLO_box; 2.
DR SMART; SM00220; S_TKc; 1.
DR SUPFAM; SSF56112; SSF56112; 1.
DR PROSITE; PS50078; POLO_BOX; 2.
DR PROSITE; PS00107; PROTEIN_KINASE_ATP; 1.
DR PROSITE; PS50011; PROTEIN_KINASE_DOM; 1.
DR PROSITE; PS00108; PROTEIN_KINASE_ST; 1.
PE 2: Evidence at transcript level;
KW ATP-binding; Cell cycle; Cell division; Centromere; Chromosome; Cytoplasm;
KW Cytoskeleton; Isopeptide bond; Kinase; Kinetochore; Mitosis;
KW Nucleotide-binding; Nucleus; Phosphoprotein; Reference proteome; Repeat;
KW Serine/threonine-protein kinase; Transferase; Ubl conjugation.
FT CHAIN 1..603
FT /note="Serine/threonine-protein kinase PLK1"
FT /id="PRO_0000086558"
FT DOMAIN 53..305
FT /note="Protein kinase"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT DOMAIN 417..480
FT /note="POLO box 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00154"
FT DOMAIN 515..584
FT /note="POLO box 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00154"
FT REGION 1..32
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 194..221
FT /note="Activation loop"
FT /evidence="ECO:0000250"
FT REGION 338..361
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 493..507
FT /note="Linker"
FT /evidence="ECO:0000250"
FT REGION 538..540
FT /note="Important for interaction with phosphorylated
FT proteins"
FT /evidence="ECO:0000250"
FT MOTIF 337..340
FT /note="D-box that targets the protein for proteasomal
FT degradation in anaphase"
FT /evidence="ECO:0000250"
FT ACT_SITE 176
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159,
FT ECO:0000255|PROSITE-ProRule:PRU10027"
FT BINDING 59..67
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT BINDING 82
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT BINDING 131
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT BINDING 178..181
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT BINDING 194
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT MOD_RES 103
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 137
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 210
FT /note="Phosphothreonine; by AURKA"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 214
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 269
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250"
FT MOD_RES 335
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 375
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 450
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT MOD_RES 498
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT CROSSLNK 19
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in ubiquitin)"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT CROSSLNK 338
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in SUMO2)"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT CROSSLNK 492
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in ubiquitin)"
FT /evidence="ECO:0000250|UniProtKB:P53350"
FT CONFLICT 27
FT /note="A -> V (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 32
FT /note="G -> V (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 45
FT /note="M -> V (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 51
FT /note="R -> Q (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 80
FT /note="P -> A (in Ref. 2; AAH83926)"
FT /evidence="ECO:0000305"
FT CONFLICT 102
FT /note="I -> T (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 109
FT /note="A -> E (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 291
FT /note="T -> A (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
FT CONFLICT 543..544
FT /note="LC -> RG (in Ref. 1; AAA18885)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 603 AA; 68291 MW; D756DD742CB14F6E CRC64;
MNAAAKAGKL ARAPADLGKG GVPGDAAPGA PGAAPLAKEI PEVLMDPRSR RQYVRGRFLG
KGGFAKCFEI SDSDTKEVFP GKIVPKSLLL KPHQKEKMSM EISIHRSLAH QHVVGFHGFF
EDSDFVFVVL ELCRRRSLLE LHKRRKALTE PEARYYLRQI VLGCQYLHRN QVIHRDLKLG
NLFLNEDLEV KIGDFGLATK VEYEGERKKT LCGTPNYIAP EVLSKKGHSF EVDVWSIGCI
MYTLLVGKPP FETSCLKETY LRIKKNEYSI PKHINPVAAS LIQKMLQTDP TARPTIHELL
NDEFFTSGYI PARLPITCLT IPPRFSIAPS SLDPSNRKPL TVLNKGVENP LPDRPREKEE
PVVRETNEAI ECHLSDLLQQ LTSVNASKPS ERGLVRQEEA EDPACIPIFW VSKWVDYSDK
YGLGYQLCDN SVGVLFNDST RLILYNDGDS LQYIERDGTE SYLTVSSHPN SLMKKITLLN
YFRNYMSEHL LKAGANITPR EGDELARLPY LRTWFRTRSA IILHLSNGTV QINFFQDHTK
LILCPLMAAV TYINEKRDFR TYRLSLLEEY GCCKELASRL RYARTMVDKL LSSRSACNRL
KAS
