NameInhibitor of nuclear factor kappa-B kinase subunit beta
Synonyms
  • 2.7.11.10
  • I-kappa-B kinase 2
  • I-kappa-B-kinase beta
  • IKK2
  • IKKB
  • NFKBIKB
  • Nuclear factor NF-kappa-B inhibitor kinase beta
Gene NameIKBKB
OrganismHuman
Amino acid sequence
>lcl|BSEQ0002295|Inhibitor of nuclear factor kappa-B kinase subunit beta
MSWSPSLTTQTCGAWEMKERLGTGGFGNVIRWHNQETGEQIAIKQCRQELSPRNRERWCL
EIQIMRRLTHPNVVAARDVPEGMQNLAPNDLPLLAMEYCQGGDLRKYLNQFENCCGLREG
AILTLLSDIASALRYLHENRIIHRDLKPENIVLQQGEQRLIHKIIDLGYAKELDQGSLCT
SFVGTLQYLAPELLEQQKYTVTVDYWSFGTLAFECITGFRPFLPNWQPVQWHSKVRQKSE
VDIVVSEDLNGTVKFSSSLPYPNNLNSVLAERLEKWLQLMLMWHPRQRGTDPTYGPNGCF
KALDDILNLKLVHILNMVTGTIHTYPVTEDESLQSLKARIQQDTGIPEEDQELLQEAGLA
LIPDKPATQCISDGKLNEGHTLDMDLVFLFDNSKITYETQISPRPQPESVSCILQEPKRN
LAFFQLRKVWGQVWHSIQTLKEDCNRLQQGQRAAMMNLLRNNSCLSKMKNSMASMSQQLK
AKLDFFKTSIQIDLEKYSEQTEFGITSDKLLLAWREMEQAVELCGRENEVKLLVERMMAL
QTDIVDLQRSPMGRKQGGTLDDLEEQARELYRRLREKPRDQRTEGDSQEMVRLLLQAIQS
FEKKVRVIYTQLSKTVVCKQKALELLPKVEEVVSLMNEDEKTVVRLQEKRQKELWNLLKI
ACSKVRGPVSGSPDSMNASRLSQPGQLMSQPSTASNSLPEPAKKSEELVAEAHNLCTLLE
NAIQDTVREQDQSFTALDWSWLQTEEEEHSCLEQAS
Number of residues756
Molecular Weight86563.245
Theoretical pI5.53
GO Classification
Functions
  • ATP binding
  • protein kinase activity
  • protein serine/threonine kinase activity
  • protein heterodimerization activity
  • IkappaB kinase activity
  • protein kinase binding
  • protein homodimerization activity
  • scaffold protein binding
Processes
  • toll-like receptor 4 signaling pathway
  • positive regulation of sodium ion transport
  • serine phosphorylation of STAT protein
  • Fc-epsilon receptor signaling pathway
  • toll-like receptor 5 signaling pathway
  • T cell receptor signaling pathway
  • skeletal muscle contraction
  • cellular response to tumor necrosis factor
  • toll-like receptor 9 signaling pathway
  • I-kappaB kinase/NF-kappaB signaling
  • positive regulation of transcription, DNA-templated
  • toll-like receptor signaling pathway
  • response to virus
  • negative regulation of apoptotic process
  • neurotrophin TRK receptor signaling pathway
  • toll-like receptor TLR1
  • response to fatty acid
  • positive regulation of transcription from RNA polymerase II promoter
  • toll-like receptor TLR6
  • cortical actin cytoskeleton organization
  • tumor necrosis factor-mediated signaling pathway
  • protein phosphorylation
  • TRIF-dependent toll-like receptor signaling pathway
  • establishment of protein localization to plasma membrane
  • positive regulation of I-kappaB kinase/NF-kappaB signaling
  • stimulatory C-type lectin receptor signaling pathway
  • positive regulation of type I interferon production
  • I-kappaB phosphorylation
  • positive regulation of cation channel activity
  • cell surface receptor signaling pathway
  • B cell homeostasis
  • interleukin-1-mediated signaling pathway
  • positive regulation of cell proliferation
  • regulation of establishment of endothelial barrier
  • negative regulation of bicellular tight junction assembly
  • positive regulation of NF-kappaB transcription factor activity
  • negative regulation of myosin-light-chain-phosphatase activity
  • MyD88-dependent toll-like receptor signaling pathway
  • nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway
  • response to drug
  • MyD88-independent toll-like receptor signaling pathway
  • response to toxic substance
  • nucleotide-binding oligomerization domain containing signaling pathway
  • inflammatory response
  • stress-activated MAPK cascade
  • positive regulation of neuron death
  • toll-like receptor 10 signaling pathway
  • neuron projection development
  • regulation of phosphorylation
  • toll-like receptor 2 signaling pathway
  • regulation of tumor necrosis factor-mediated signaling pathway
  • innate immune response
  • toll-like receptor 3 signaling pathway
Components
  • cytoplasm
  • cytoplasmic side of plasma membrane
  • CD40 receptor complex
  • nucleus
  • membrane raft
  • IkappaB kinase complex
  • cytosol
General FunctionScaffold protein binding
Specific FunctionSerine kinase that plays an essential role in the NF-kappa-B signaling pathway which is activated by multiple stimuli such as inflammatory cytokines, bacterial or viral products, DNA damages or other cellular stresses. Acts as part of the canonical IKK complex in the conventional pathway of NF-kappa-B activation and phosphorylates inhibitors of NF-kappa-B on 2 critical serine residues. These modifications allow polyubiquitination of the inhibitors and subsequent degradation by the proteasome. In turn, free NF-kappa-B is translocated into the nucleus and activates the transcription of hundreds of genes involved in immune response, growth control, or protection against apoptosis. In addition to the NF-kappa-B inhibitors, phosphorylates several other components of the signaling pathway including NEMO/IKBKG, NF-kappa-B subunits RELA and NFKB1, as well as IKK-related kinases TBK1 and IKBKE. IKK-related kinase phosphorylations may prevent the overproduction of inflammatory mediators since they exert a negative regulation on canonical IKKs. Phosphorylates FOXO3, mediating the TNF-dependent inactivation of this pro-apoptotic transcription factor. Also phosphorylates other substrates including NCOA3, BCL10 and IRS1. Within the nucleus, acts as an adapter protein for NFKBIA degradation in UV-induced NF-kappa-B activation.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID2599558
UniProtKB IDO14920
UniProtKB Entry NameIKKB_HUMAN
Cellular LocationCytoplasm
Gene sequence
>lcl|BSEQ0010805|Inhibitor of nuclear factor kappa-B kinase subunit beta (IKBKB)
ATGTTTTCAGGGGGGTGTCATAGCCCCGGGTTTGGCCGCCCCAGCCCCGCCTTCCCCGCC
CCGGGGAGCCCGCCCCCTGCCCCGCGTCCCTGCCGACAGGAAACAGGTGAGCAGATTGCC
ATCAAGCAGTGCCGGCAGGAGCTCAGCCCCCGGAACCGAGAGCGGTGGTGCCTGGAGATC
CAGATCATGAGAAGGCTGACCCACCCCAATGTGGTGGCTGCCCGAGATGTCCCTGAGGGG
ATGCAGAACTTGGCGCCCAATGACCTGCCCCTGCTGGCCATGGAGTACTGCCAAGGAGGA
GATCTCCGGAAGTACCTGAACCAGTTTGAGAACTGCTGTGGTCTGCGGGAAGGTGCCATC
CTCACCTTGCTGAGTGACATTGCCTCTGCGCTTAGATACCTTCATGAAAACAGAATCATC
CATCGGGATCTAAAGCCAGAAAACATCGTCCTGCAGCAAGGAGAACAGAGGTTAATACAC
AAAATTATTGACCTAGGATATGCCAAGGAGCTGGATCAGGGCAGTCTTTGCACATCATTC
GTGGGGACCCTGCAGTACCTGGCCCCAGAGCTACTGGAGCAGCAGAAGTACACAGTGACC
GTCGACTACTGGAGCTTCGGCACCCTGGCCTTTGAGTGCATCACGGGCTTCCGGCCCTTC
CTCCCCAACTGGCAGCCCGTGCAGTGGCATTCAAAAGTGCGGCAGAAGAGTGAGGTGGAC
ATTGTTGTTAGCGAAGACTTGAATGGAACGGTGAAGTTTTCAAGCTCTTTACCCTACCCC
AATAATCTTAACAGTGTCCTGGCTGAGCGACTGGAGAAGTGGCTGCAACTGATGCTGATG
TGGCACCCCCGACAGAGGGGCACGGATCCCACGTATGGGCCCAATGGCTGCTTCAAGGCC
CTGGATGACATCTTAAACTTAAAGCTGGTTCATATCTTGAACATGGTCACGGGCACCATC
CACACCTACCCTGTGACAGAGGATGAGAGTCTGCAGAGCTTGAAGGCCAGAATCCAACAG
GACACGGGCATCCCAGAGGAGGACCAGGAGCTGCTGCAGGAAGCGGGCCTGGCGTTGATC
CCCGATAAGCCTGCCACTCAGTGTATTTCAGACGGCAAGTTAAATGAGGGCCACACATTG
GACATGGATCTTGTTTTTCTCTTTGACAACAGTAAAATCACCTATGAGACTCAGATCTCC
CCACGGCCCCAACCTGAAAGTGTCAGCTGTATCCTTCAAGAGCCCAAGAGGAATCTCGCC
TTCTTCCAGCTGAGGAAGGTGTGGGGCCAGGTCTGGCACAGCATCCAGACCCTGAAGGAA
GATTGCAACCGGCTGCAGCAGGGACAGCGAGCCGCCATGATGAATCTCCTCCGAAACAAC
AGCTGCCTCTCCAAAATGAAGAATTCCATGGCTTCCATGTCTCAGCAGCTCAAGGCCAAG
TTGGATTTCTTCAAAACCAGCATCCAGATTGACCTGGAGAAGTACAGCGAGCAAACCGAG
TTTGGGATCACATCAGATAAACTGCTGCTGGCCTGGAGGGAAATGGAGCAGGCTGTGGAG
CTCTGTGGGCGGGAGAACGAAGTGAAACTCCTGGTAGAACGGATGATGGCTCTGCAGACC
GACATTGTGGACTTACAGAGGAGCCCCATGGGCCGGAAGCAGGGGGGAACGCTGGACGAC
CTAGAGGAGCAAGCAAGGGAGCTGTACAGGAGACTAAGGGAAAAACCTCGAGACCAGCGA
ACTGAGGGTGACAGTCAGGAAATGGTACGGCTGCTGCTTCAGGCAATTCAGAGCTTCGAG
AAGAAAGTGCGAGTGATCTATACGCAGCTCAGTAAAACTGTGGTTTGCAAGCAGAAGGCG
CTGGAACTGTTGCCCAAGGTGGAAGAGGTGGTGAGCTTAATGAATGAGGATGAGAAGACT
GTTGTCCGGCTGCAGGAGAAGCGGCAGAAGGAGCTCTGGAATCTCCTGAAGATTGCTTGT
AGCAAGGTCCGTGGTCCTGTCAGTGGAAGCCCGGATAGCATGAATGCCTCTCGACTTAGC
CAGCCTGGGCAGCTGATGTCTCAGCCCTCCACGGCCTCCAACAGCTTACCTGAGCCAGCC
AAGAAGAGTGAAGAACTGGTGGCTGAAGCACATAACCTCTGCACCCTGCTAGAAAATGCC
ATACAGGACACTGTGAGGGAACAAGACCAGAGTTTCACGGCCCTAGACTGGAGCTGGTTA
CAGACGGAAGAAGAAGAGCACAGCTGCCTGGAGCAGGCCTCATGA
GenBank Gene IDAF029684
GeneCard IDNot Available
GenAtlas IDIKBKB
HGNC IDHGNC:5960
Chromosome Location8
Locus8p11.2
References
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