IKKB_BOVIN
ID IKKB_BOVIN Reviewed; 756 AA.
AC Q95KV0;
DT 05-SEP-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-DEC-2001, sequence version 1.
DT 03-AUG-2022, entry version 152.
DE RecName: Full=Inhibitor of nuclear factor kappa-B kinase subunit beta;
DE Short=I-kappa-B-kinase beta;
DE Short=IKK-B;
DE Short=IKK-beta;
DE Short=IkBKB;
DE EC=2.7.11.10;
DE AltName: Full=I-kappa-B kinase 2;
DE Short=IKK2;
DE AltName: Full=Nuclear factor NF-kappa-B inhibitor kinase beta;
DE Short=NFKBIKB;
DE AltName: Full=Serine/threonine protein kinase IKBKB;
DE EC=2.7.11.1 {ECO:0000250|UniProtKB:O14920};
GN Name=IKBKB;
OS Bos taurus (Bovine).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC Bovinae; Bos.
OX NCBI_TaxID=9913;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=12459277; DOI=10.1016/s0378-1119(02)01011-9;
RA Rottenberg S., Schmuckli-Maurer J., Grimm S., Heussler V.T.,
RA Dobbelaere D.A.E.;
RT "Characterization of the bovine IkappaB kinases (IKK)alpha and IKKbeta, the
RT regulatory subunit NEMO and their substrate IkappaBalpha.";
RL Gene 299:293-300(2002).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RX PubMed=16305752; DOI=10.1186/1471-2164-6-166;
RA Harhay G.P., Sonstegard T.S., Keele J.W., Heaton M.P., Clawson M.L.,
RA Snelling W.M., Wiedmann R.T., Van Tassell C.P., Smith T.P.L.;
RT "Characterization of 954 bovine full-CDS cDNA sequences.";
RL BMC Genomics 6:166-166(2005).
CC -!- FUNCTION: Serine kinase that plays an essential role in the NF-kappa-B
CC signaling pathway which is activated by multiple stimuli such as
CC inflammatory cytokines, bacterial or viral products, DNA damages or
CC other cellular stresses. Acts as part of the canonical IKK complex in
CC the conventional pathway of NF-kappa-B activation and phosphorylates
CC inhibitors of NF-kappa-B on 2 critical serine residues. These
CC modifications allow polyubiquitination of the inhibitors and subsequent
CC degradation by the proteasome. In turn, free NF-kappa-B is translocated
CC into the nucleus and activates the transcription of hundreds of genes
CC involved in immune response, growth control, or protection against
CC apoptosis. In addition to the NF-kappa-B inhibitors, phosphorylates
CC several other components of the signaling pathway including NEMO/IKBKG,
CC NF-kappa-B subunits RELA and NFKB1, as well as IKK-related kinases TBK1
CC and IKBKE. IKK-related kinase phosphorylations may prevent the
CC overproduction of inflammatory mediators since they exert a negative
CC regulation on canonical IKKs. Phosphorylates FOXO3, mediating the TNF-
CC dependent inactivation of this pro-apoptotic transcription factor. Also
CC phosphorylates other substrates including NCOA3, BCL10 and IRS1. Within
CC the nucleus, acts as an adapter protein for NFKBIA degradation in UV-
CC induced NF-kappa-B activation (By similarity). Phosphorylates RIPK1 at
CC 'Ser-25' which represses its kinase activity and consequently prevents
CC TNF-mediated RIPK1-dependent cell death (By similarity). Phosphorylates
CC the C-terminus of IRF5, stimulating IRF5 homodimerization and
CC translocation into the nucleus (By similarity).
CC {ECO:0000250|UniProtKB:O14920, ECO:0000250|UniProtKB:O88351}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-seryl-[I-kappa-B protein] = ADP + H(+) + O-phospho-L-
CC seryl-[I-kappa-B protein]; Xref=Rhea:RHEA:19073, Rhea:RHEA-
CC COMP:13698, Rhea:RHEA-COMP:13699, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29999, ChEBI:CHEBI:30616, ChEBI:CHEBI:83421,
CC ChEBI:CHEBI:456216; EC=2.7.11.10;
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=2.7.11.1;
CC Evidence={ECO:0000250|UniProtKB:O14920};
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=2.7.11.1; Evidence={ECO:0000250|UniProtKB:O14920};
CC -!- SUBUNIT: Component of the I-kappa-B-kinase (IKK) core complex
CC consisting of CHUK, IKBKB and IKBKG; probably four alpha/CHUK-
CC beta/IKBKB dimers are associated with four gamma/IKBKG subunits. The
CC IKK core complex seems to associate with regulatory or adapter proteins
CC to form a IKK-signalosome holo-complex. The IKK complex associates with
CC TERF2IP/RAP1, leading to promote IKK-mediated phosphorylation of
CC RELA/p65. Part of a complex composed of NCOA2, NCOA3, CHUK/IKKA, IKBKB,
CC IKBKG and CREBBP. Part of a 70-90 kDa complex at least consisting of
CC CHUK/IKKA, IKBKB, NFKBIA, RELA, ELP1 and MAP3K14. Found in a membrane
CC raft complex, at least composed of BCL10, CARD11, DPP4 and IKBKB.
CC Interacts with SQSTM1 through PRKCZ or PRKCI. Forms an NGF-induced
CC complex with IKBKB, PRKCI and TRAF6. May interact with MAVS/IPS1.
CC Interacts with NALP2. Interacts with TICAM1. Interacts with FAF1; the
CC interaction disrupts the IKK complex formation. Interacts with ATM.
CC Part of a ternary complex consisting of TANK, IKBKB and IKBKG.
CC Interacts with NIBP; the interaction is direct. Interacts with ARRB1
CC and ARRB2. Interacts with TRIM21. Interacts with NLRC5; prevents IKBKB
CC phosphorylation and kinase activity. Interacts with PDPK1. Interacts
CC with EIF2AK2/PKR. The phosphorylated form interacts with PPM1A and
CC PPM1B. Interacts with ZNF268; the interaction is further increased in a
CC TNF-alpha-dependent manner. Interacts with IKBKE. Interacts with NAA10,
CC leading to NAA10 degradation. Interacts with FOXO3. Interacts with
CC ZC3H12A. Interacts with AKAP13 (By similarity). Interacts with IFIT5;
CC the interaction synergizes the recruitment of IKK to MAP3K7 and
CC enhances IKK phosphorylation (By similarity). Interacts with LRRC14;
CC disrupts IKBKB-IKBKG interaction preventing I-kappa-B-kinase (IKK) core
CC complex formation and leading to a decrease of IKBKB phosphorylation
CC and NF-kappaB activation (By similarity). Interacts with SASH1 (By
CC similarity). Interacts with ARFIP2 (By similarity). Interacts with
CC FKBP5 (By similarity). {ECO:0000250|UniProtKB:O14920,
CC ECO:0000250|UniProtKB:O88351, ECO:0000250|UniProtKB:Q9QY78}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:O14920}. Nucleus
CC {ECO:0000250|UniProtKB:O14920}. Membrane raft
CC {ECO:0000250|UniProtKB:O14920}. Note=Colocalized with DPP4 in membrane
CC rafts. {ECO:0000250|UniProtKB:O14920}.
CC -!- DOMAIN: The kinase domain is located in the N-terminal region. The
CC leucine zipper is important to allow homo- and hetero-dimerization. At
CC the C-terminal region is located the region responsible for the
CC interaction with NEMO/IKBKG (By similarity). {ECO:0000250}.
CC -!- PTM: Upon cytokine stimulation, phosphorylated on Ser-177 and Ser-181
CC by MEKK1 and/or MAP3K14/NIK as well as TBK1 and PRKCZ; which enhances
CC activity. Once activated, autophosphorylates on the C-terminal serine
CC cluster; which decreases activity and prevents prolonged activation of
CC the inflammatory response. Phosphorylated by the IKK-related kinases
CC TBK1 and IKBKE, which is associated with reduced CHUK/IKKA and IKBKB
CC activity and NF-kappa-B-dependent gene transcription. Dephosphorylated
CC at Ser-177 and Ser-181 by PPM1A and PPM1B.
CC {ECO:0000250|UniProtKB:O14920}.
CC -!- PTM: Ubiquitinated. Monoubiquitination involves TRIM21 that leads to
CC inhibition of Tax-induced NF-kappa-B signaling. 'Ser-163' may not serve
CC as a monoubiquitination site. Ubiquitination on 'Ser-163' may modulate
CC phosphorylation on C-terminal serine residues.
CC {ECO:0000250|UniProtKB:O14920}.
CC -!- PTM: Hydroxylated by PHD1/EGLN2, loss of hydroxylation under hypoxic
CC conditions results in activation of NF-kappa-B.
CC {ECO:0000250|UniProtKB:O14920}.
CC -!- SIMILARITY: Belongs to the protein kinase superfamily. Ser/Thr protein
CC kinase family. I-kappa-B kinase subfamily. {ECO:0000255|PROSITE-
CC ProRule:PRU00159}.
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DR EMBL; AJ414556; CAC93687.1; -; mRNA.
DR EMBL; BT021585; AAX46432.1; -; mRNA.
DR RefSeq; NP_776778.1; NM_174353.2.
DR AlphaFoldDB; Q95KV0; -.
DR SMR; Q95KV0; -.
DR BioGRID; 159165; 2.
DR STRING; 9913.ENSBTAP00000009995; -.
DR PaxDb; Q95KV0; -.
DR PRIDE; Q95KV0; -.
DR Ensembl; ENSBTAT00000009995; ENSBTAP00000009995; ENSBTAG00000007599.
DR GeneID; 281854; -.
DR KEGG; bta:281854; -.
DR CTD; 3551; -.
DR VEuPathDB; HostDB:ENSBTAG00000007599; -.
DR VGNC; VGNC:106778; IKBKB.
DR eggNOG; KOG4250; Eukaryota.
DR GeneTree; ENSGT00950000182937; -.
DR HOGENOM; CLU_000288_101_2_1; -.
DR InParanoid; Q95KV0; -.
DR OMA; NAMQDTM; -.
DR OrthoDB; 1013139at2759; -.
DR TreeFam; TF324269; -.
DR Reactome; R-BTA-9020702; Interleukin-1 signaling.
DR Proteomes; UP000009136; Chromosome 27.
DR Bgee; ENSBTAG00000007599; Expressed in monocyte and 105 other tissues.
DR ExpressionAtlas; Q95KV0; baseline and differential.
DR GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR GO; GO:0008385; C:IkappaB kinase complex; IBA:GO_Central.
DR GO; GO:0045121; C:membrane raft; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0008384; F:IkappaB kinase activity; IEA:UniProtKB-EC.
DR GO; GO:0046982; F:protein heterodimerization activity; ISS:UniProtKB.
DR GO; GO:0042803; F:protein homodimerization activity; ISS:UniProtKB.
DR GO; GO:0004672; F:protein kinase activity; ISS:UniProtKB.
DR GO; GO:0106310; F:protein serine kinase activity; IEA:RHEA.
DR GO; GO:0004674; F:protein serine/threonine kinase activity; IBA:GO_Central.
DR GO; GO:0071356; P:cellular response to tumor necrosis factor; ISS:UniProtKB.
DR GO; GO:0018105; P:peptidyl-serine phosphorylation; IBA:GO_Central.
DR GO; GO:0051092; P:positive regulation of NF-kappaB transcription factor activity; IBA:GO_Central.
DR GO; GO:0045944; P:positive regulation of transcription by RNA polymerase II; ISS:UniProtKB.
DR GO; GO:0006468; P:protein phosphorylation; ISS:UniProtKB.
DR GO; GO:0033209; P:tumor necrosis factor-mediated signaling pathway; IBA:GO_Central.
DR Gene3D; 1.20.1270.250; -; 1.
DR InterPro; IPR041185; IKBKB_SDD.
DR InterPro; IPR046375; IKBKB_SDD_sf.
DR InterPro; IPR022007; IKKbetaNEMObind.
DR InterPro; IPR011009; Kinase-like_dom_sf.
DR InterPro; IPR000719; Prot_kinase_dom.
DR InterPro; IPR008271; Ser/Thr_kinase_AS.
DR InterPro; IPR029071; Ubiquitin-like_domsf.
DR Pfam; PF18397; IKBKB_SDD; 1.
DR Pfam; PF12179; IKKbetaNEMObind; 1.
DR Pfam; PF00069; Pkinase; 1.
DR SMART; SM01239; IKKbetaNEMObind; 1.
DR SMART; SM00220; S_TKc; 1.
DR SUPFAM; SSF54236; SSF54236; 1.
DR SUPFAM; SSF56112; SSF56112; 1.
DR PROSITE; PS50011; PROTEIN_KINASE_DOM; 1.
DR PROSITE; PS00108; PROTEIN_KINASE_ST; 1.
PE 2: Evidence at transcript level;
KW ATP-binding; Cytoplasm; Hydroxylation; Isopeptide bond; Kinase; Membrane;
KW Nucleotide-binding; Nucleus; Phosphoprotein; Reference proteome;
KW S-nitrosylation; Serine/threonine-protein kinase; Transferase;
KW Ubl conjugation.
FT CHAIN 1..756
FT /note="Inhibitor of nuclear factor kappa-B kinase subunit
FT beta"
FT /id="PRO_0000248284"
FT DOMAIN 15..300
FT /note="Protein kinase"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT REGION 458..479
FT /note="Leucine-zipper"
FT REGION 737..742
FT /note="NEMO-binding"
FT /evidence="ECO:0000250"
FT ACT_SITE 145
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159,
FT ECO:0000255|PROSITE-ProRule:PRU10027"
FT BINDING 21..29
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT BINDING 44
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00159"
FT MOD_RES 177
FT /note="Phosphoserine; by TBK1 and PKC/PRKCZ"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 179
FT /note="S-nitrosocysteine"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 181
FT /note="Phosphoserine; by TBK1, PKC/PRKCZ and PDPK1"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 191
FT /note="Hydroxyproline"
FT /evidence="ECO:0000250"
FT MOD_RES 670
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 672
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 675
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 682
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 689
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 697
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 705
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 733
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT MOD_RES 740
FT /note="Phosphoserine; by autocatalysis"
FT /evidence="ECO:0000250|UniProtKB:O14920"
FT CROSSLNK 163
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in ubiquitin)"
FT /evidence="ECO:0000250|UniProtKB:O14920"
SQ SEQUENCE 756 AA; 86647 MW; A072D15614A176E5 CRC64;
MSWSPSLPTQ TCGAWEMKER LGTGGFGNVI RWHNQETGEQ IAIKQCRQEL SPRNRERWCL
EIQIMRRLNH PNVVAARDVP EGMQSLAPND LPLLAMEYCQ GGDLRKYLNQ FENCCGLREG
AILTLLSDIA SALRYLHENR IIHRDLKPEN IVLQQGEQRL IHKIIDLGYA KELDQGSLCT
SFVGTLQYLA PELLEQQKYT VTVDYWSFGT LAFECITGFR PFLPNWQPVQ WHSKVRQKSE
MDIVVSEDLN GAVKFSSSLP HPNNLNSVLA QRLEKWLQLM LMWHPRQRGT DPVYGPNGCF
KALDDILNLK LLHVLNMVTG TLHTYPVTED ESLQSLKARI RQDTGILEED QELLQEAGLA
LIPDKPAAQC LSDGKLNEGR TLDMDLVFLF DNSRVTYESQ VSPQPQPESV SCILQEPKRN
LPFFQLRKVW GQVWHSIQAL KEDCSRLQQG QRAAMMNLLR NNSCLSKMKN SMASMSQQLK
AKLDFFKTSI QIDLEKYREQ TEFGITSDKL LLAWREMEQA VELCGRENEV KHLVERMMAL
QTDIVDLQRS PMGRKQGGTL DDLEEQAREL YRRLREKPRD QRTDGDSQEM VRLLLQAIQG
FEKKVRVIYT QLSKTVVCKQ KALELLPKVE EVVSLMSEDE KMVVRLQEKR QKELWNLLKI
ACSKVRGPVS GSPDSMNASR LSHPCQLMSQ PCTAPDSLPE AAEKSEDLVA EAHTLCTQLE
NALQDTMKEQ DQSLRSLDWS WLQSEEEEQQ SLERAS
