ID   SSN3_NEOFI              Reviewed;         426 AA.
AC   A1D624;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 1.
DT   27-MAR-2024, entry version 103.
DE   RecName: Full=Serine/threonine-protein kinase ssn3;
DE            EC=2.7.11.22;
DE            EC=2.7.11.23;
DE   AltName: Full=Cyclin-dependent kinase 8;
GN   Name=ssn3; Synonyms=cdk8; ORFNames=NFIA_063290;
OS   Neosartorya fischeri (strain ATCC 1020 / DSM 3700 / CBS 544.65 / FGSC A1164
OS   / JCM 1740 / NRRL 181 / WB 181) (Aspergillus fischerianus).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC   Aspergillus subgen. Fumigati.
OX   NCBI_TaxID=331117;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 1020 / DSM 3700 / CBS 544.65 / FGSC A1164 / JCM 1740 /
RC   NRRL 181 / WB 181;
RX   PubMed=18404212; DOI=10.1371/journal.pgen.1000046;
RA   Fedorova N.D., Khaldi N., Joardar V.S., Maiti R., Amedeo P., Anderson M.J.,
RA   Crabtree J., Silva J.C., Badger J.H., Albarraq A., Angiuoli S., Bussey H.,
RA   Bowyer P., Cotty P.J., Dyer P.S., Egan A., Galens K., Fraser-Liggett C.M.,
RA   Haas B.J., Inman J.M., Kent R., Lemieux S., Malavazi I., Orvis J.,
RA   Roemer T., Ronning C.M., Sundaram J.P., Sutton G., Turner G., Venter J.C.,
RA   White O.R., Whitty B.R., Youngman P., Wolfe K.H., Goldman G.H.,
RA   Wortman J.R., Jiang B., Denning D.W., Nierman W.C.;
RT   "Genomic islands in the pathogenic filamentous fungus Aspergillus
RT   fumigatus.";
RL   PLoS Genet. 4:E1000046-E1000046(2008).
CC   -!- FUNCTION: Component of the srb8-11 complex. The srb8-11 complex is a
CC       regulatory module of the Mediator complex which is itself dependent
CC       transcription. The srb8-11 complex may be involved in the
CC       transcriptional repression of a subset of genes regulated by Mediator.
CC       It may inhibit the association of the Mediator complex with RNA
CC       polymerase II to form the holoenzyme complex. The srb8-11 complex
CC       phosphorylates the C-terminal domain (CTD) of the largest subunit of
CC       RNA polymerase II (By similarity). {ECO:0000250}.
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=2.7.11.22;
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=2.7.11.22;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=[DNA-directed RNA polymerase] + ATP = ADP + H(+) + phospho-
CC         [DNA-directed RNA polymerase]; Xref=Rhea:RHEA:10216, Rhea:RHEA-
CC         COMP:11321, Rhea:RHEA-COMP:11322, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:43176, ChEBI:CHEBI:68546,
CC         ChEBI:CHEBI:456216; EC=2.7.11.23;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC   -!- SUBUNIT: Component of the srb8-11 complex, a regulatory module of the
CC       Mediator complex. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Nucleus {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the protein kinase superfamily. CMGC Ser/Thr
CC       protein kinase family. CDC2/CDKX subfamily. {ECO:0000305}.
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DR   EMBL; DS027690; EAW21168.1; -; Genomic_DNA.
DR   RefSeq; XP_001263065.1; XM_001263064.1.
DR   AlphaFoldDB; A1D624; -.
DR   SMR; A1D624; -.
DR   STRING; 331117.A1D624; -.
DR   EnsemblFungi; EAW21168; EAW21168; NFIA_063290.
DR   GeneID; 4589549; -.
DR   KEGG; nfi:NFIA_063290; -.
DR   VEuPathDB; FungiDB:NFIA_063290; -.
DR   eggNOG; KOG0666; Eukaryota.
DR   HOGENOM; CLU_000288_181_6_1; -.
DR   OMA; YFKNGGP; -.
DR   OrthoDB; 46620at2759; -.
DR   Proteomes; UP000006702; Unassembled WGS sequence.
DR   GO; GO:1990508; C:CKM complex; IEA:EnsemblFungi.
DR   GO; GO:0016592; C:mediator complex; IEA:EnsemblFungi.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0004693; F:cyclin-dependent protein serine/threonine kinase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0106310; F:protein serine kinase activity; IEA:RHEA.
DR   GO; GO:0008353; F:RNA polymerase II CTD heptapeptide repeat kinase activity; IEA:UniProtKB-EC.
DR   GO; GO:0060258; P:negative regulation of filamentous growth; IEA:EnsemblFungi.
DR   GO; GO:0000122; P:negative regulation of transcription by RNA polymerase II; IEA:EnsemblFungi.
DR   GO; GO:0070481; P:nuclear-transcribed mRNA catabolic process, non-stop decay; IEA:EnsemblFungi.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   GO; GO:0000435; P:positive regulation of transcription from RNA polymerase II promoter by galactose; IEA:EnsemblFungi.
DR   GO; GO:0031648; P:protein destabilization; IEA:EnsemblFungi.
DR   CDD; cd07842; STKc_CDK8_like; 1.
DR   Gene3D; 1.10.510.10; Transferase(Phosphotransferase) domain 1; 1.
DR   InterPro; IPR011009; Kinase-like_dom_sf.
DR   InterPro; IPR000719; Prot_kinase_dom.
DR   InterPro; IPR008271; Ser/Thr_kinase_AS.
DR   PANTHER; PTHR24056; CELL DIVISION PROTEIN KINASE; 1.
DR   PANTHER; PTHR24056:SF495; CYCLIN-DEPENDENT KINASE 8; 1.
DR   Pfam; PF00069; Pkinase; 1.
DR   SMART; SM00220; S_TKc; 1.
DR   SUPFAM; SSF56112; Protein kinase-like (PK-like); 1.
DR   PROSITE; PS50011; PROTEIN_KINASE_DOM; 1.
DR   PROSITE; PS00108; PROTEIN_KINASE_ST; 1.
PE   3: Inferred from homology;
KW   Activator; ATP-binding; Kinase; Magnesium; Metal-binding;
KW   Nucleotide-binding; Nucleus; Reference proteome; Repressor;
KW   Serine/threonine-protein kinase; Transcription; Transcription regulation;
KW   Transferase.
FT   CHAIN           1..426
FT                   /note="Serine/threonine-protein kinase ssn3"
FT                   /id="PRO_0000312948"
FT   DOMAIN          41..368
FT                   /note="Protein kinase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT   REGION          390..426
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        173
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00159,
FT                   ECO:0000255|PROSITE-ProRule:PRU10027"
FT   BINDING         47..55
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT   BINDING         71
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
SQ   SEQUENCE   426 AA;  48039 MW;  0A1FFD1B25B87EAF CRC64;
     MFGRNFPFFN SIGGFYPRES LDSKRPSGTG YTSKVRVRDK YHIVGFISSG TYGRVYKAIG
     KDGRKGEYAI KKFKPDKEGE IIQYTGLSQS AIREMALCSE LDHPNVVQLA EIILEDKCIF
     MVFEYTEHDL LQIIHHHTQP QRHAIPAPMI KSILFQLLNG LLYLHTNWVL HRDLKPANIL
     VTSSGAVRIG DLGLARLFYK PLNSLYSGDK VVVTIWYRAP ELLMGSRHYT PAVDLWAVGC
     IFAELLSLRP IFKGEEAKMD SKKTVPFQRN QMMKIIDIMG LPRKETWPGL VSMPEFSQLQ
     SLAMSRGYLN RQCNLEGWYQ SCLKNNGYSP GSAAGTPGAE GFDLLSRLLE YDPTKRISAR
     EALEHPYFTT GTPVTANCFA GYEGKYPHRR VTQDDNDIRS GSLPGTKRSG LPDDSLMGRA
     AKRLKE
//