NFKBIZ
NF-kappa-B inhibitor zeta
Also known as: FLJ34463, IKBZ_HUMAN, INAP, MAIL
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9BYH8
- Gene
- NFKBIZ
- Ensembl
- ENSG00000144802
- Chromosome
- 3
- Canonical length
- 718 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
- Subcellular location
- Nuclear speckles,Cytoplasmic bodies
OverviewNCBI Gene
This gene is a member of the ankyrin-repeat family and is induced by lipopolysaccharide (LPS). The C-terminal portion of the encoded product which contains the ankyrin repeats, shares high sequence similarity with the I kappa B family of proteins. The latter are known to play a role in inflammatory responses to LPS by their interaction with NF-B proteins through ankyrin-repeat domains. Studies in mouse indicate that this gene product is one of the nuclear I kappa B proteins and an activator of IL-6 production. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
718 residues, UniProt reviewed canonical sequence.
>Q9BYH8|NFKBIZ
1 MIVDKLLDDS RGGEGLRDAA GGCGLMTSPL NLSYFYGASP PAAAPGACDA SCSVLGPSAP
61 GSPGSDSSDF SSASSVSSCG AVESRSRGGA RAERQPVEPH MGVGRQQRGP FQGVRVKNSV
121 KELLLHIRSH KQKASGQAVD DFKTQGVNIE QFRELKNTVS YSGKRKGPDS LSDGPACKRP
181 ALLHSQFLTP PQTPTPGESM EDVHLNEPKQ ESSADLLQNI INIKNECSPV SLNTVQVSWL
241 NPVVVPQSSP AEQCQDFHGG QVFSPPQKCQ PFQVRGSQQM IDQASLYQYS PQNQHVEQQP
301 HYTHKPTLEY SPFPIPPQSP AYEPNLFDGP ESQFCPNQSL VSLLGDQRES ENIANPMQTS
361 SSVQQQNDAH LHSFSMMPSS ACEAMVGHEM ASDSSNTSLP FSNMGNPMNT TQLGKSLFQW
421 QVEQEESKLA NISQDQFLSK DADGDTFLHI AVAQGRRALS YVLARKMNAL HMLDIKEHNG
481 QSAFQVAVAA NQHLIVQDLV NIGAQVNTTD CWGRTPLHVC AEKGHSQVLQ AIQKGAVGSN
541 QFVDLEATNY DGLTPLHCAV IAHNAVVHEL QRNQQPHSPE VQELLLKNKS LVDTIKCLIQ
601 MGAAVEAKDR KSGRTALHLA AEEANLELIR LFLELPSCLS FVNAKAYNGN TALHVAASLQ
661 YRLTQLDAVR LLMRKGADPS TRNLENEQPV HLVPDGPVGE QIRRILKGKS IQQRAPPYLocalizationUniProt · AlphaFold · HPA
Whether an antibody against NFKBIZ can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.51
- Highest tissue expression
- 384 nTPM
Expression across tissuesHPA
Tissue
- bone marrow: 384 nTPM
- salivary gland: 76 nTPM
- urinary bladder: 67 nTPM
- adipose tissue: 54 nTPM
- smooth muscle: 51 nTPM
- liver: 50 nTPM
Single-cell type
- neutrophils: 3,464 nCPM
- mast cells: 805 nCPM
- monocytes: 803 nCPM
- lacrimal acinar cells: 707 nCPM
- hematopoietic stem cells: 664 nCPM
- monocyte progenitors: 651 nCPM
Immune cell
- non-classical monocyte: 34 nTPM
- neutrophil: 25 nTPM
- intermediate monocyte: 13 nTPM
- basophil: 12 nTPM
- naive CD4 T-cell: 6 nTPM
- plasmacytoid DC: 6 nTPM
Brain region
- choroid plexus: 44 nTPM
- thalamus: 19 nTPM
- medulla oblongata: 18 nTPM
- spinal cord: 17 nTPM
- cerebral cortex: 17 nTPM
- pons: 16 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.19
- gnomAD pLI
- 1
- gnomAD missense Z
- 1.18
- DepMap mean gene effect
- -0.01
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- B cell proliferation
- B cell receptor apoptotic signaling pathway
- cellular response to interleukin-17
- cellular response to lipopolysaccharide
- cellular response to transforming growth factor beta stimulus
- chromatin remodeling
- chronic inflammatory response
- cytokine-mediated signaling pathway
- defense response to Gram-negative bacterium
- epithelial cell apoptotic process
- establishment of skin barrier
- execution phase of apoptosis
- homeostasis of number of cells within a tissue
- inflammatory response to wounding
- isotype switching
- keratinocyte activation
- keratinocyte differentiation
- keratinocyte proliferation
- mRNA transcription by RNA polymerase II
- plasma cell differentiation
- positive regulation of inflammatory response
- positive regulation of T-helper 17 cell differentiation
- positive regulation of transcription by RNA polymerase II
- regulation of gene expression
- response to cisplatin
- response to folic acid
- response to Gram-positive bacterium
- response to xenobiotic stimulus
- spleen development
- T cell mediated immunity
- T cell receptor signaling pathway
- T-helper 1 cell differentiation
- T-helper 17 cell differentiation
- toll-like receptor signaling pathway
- transcription preinitiation complex assembly
Molecular functions
- POU domain binding
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- transcription coregulator activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of NFKBIZ in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads NFKBIZ as an antibody target. Whether an autoantibody or antibody against NFKBIZ could matter depends on whether native NFKBIZ is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
NFKBIZ is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label NFKBIZ as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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