NAIP
Baculoviral IAP repeat-containing protein 1
Also known as: BIRC1, BIRC1_HUMAN, NLRB1
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q13075
- Gene
- NAIP
- Ensembl
- ENSG00000249437
- Chromosome
- 5
- Canonical length
- 1403 aa
- Protein class
- Cancer-related genes, Predicted intracellular proteins
OverviewNCBI Gene
This gene is part of a 500 kb inverted duplication on chromosome 5q13. This duplicated region contains at least four genes and repetitive elements which make it prone to rearrangements and deletions. The repetitiveness and complexity of the sequence have also caused difficulty in determining the organization of this genomic region. This copy of the gene is full length; additional copies with truncations and internal deletions are also present in this region of chromosome 5q13. It is thought that this gene is a modifier of spinal muscular atrophy caused by mutations in a neighboring gene, SMN1. The protein encoded by this gene contains regions of homology to two baculovirus inhibitor of apoptosis proteins, and it is able to suppress apoptosis induced by various signals. Alternative splicing and the use of alternative promoters results in multiple transcript variants. [provided by RefSeq, Nov 2016]
Canonical amino-acid sequenceUniProt
1403 residues, UniProt reviewed canonical sequence.
>Q13075|NAIP
1 MATQQKASDE RISQFDHNLL PELSALLGLD AVQLAKELEE EEQKERAKMQ KGYNSQMRSE
61 AKRLKTFVTY EPYSSWIPQE MAAAGFYFTG VKSGIQCFCC SLILFGAGLT RLPIEDHKRF
121 HPDCGFLLNK DVGNIAKYDI RVKNLKSRLR GGKMRYQEEE ARLASFRNWP FYVQGISPCV
181 LSEAGFVFTG KQDTVQCFSC GGCLGNWEEG DDPWKEHAKW FPKCEFLRSK KSSEEITQYI
241 QSYKGFVDIT GEHFVNSWVQ RELPMASAYC NDSIFAYEEL RLDSFKDWPR ESAVGVAALA
301 KAGLFYTGIK DIVQCFSCGG CLEKWQEGDD PLDDHTRCFP NCPFLQNMKS SAEVTPDLQS
361 RGELCELLET TSESNLEDSI AVGPIVPEMA QGEAQWFQEA KNLNEQLRAA YTSASFRHMS
421 LLDISSDLAT DHLLGCDLSI ASKHISKPVQ EPLVLPEVFG NLNSVMCVEG EAGSGKTVLL
481 KKIAFLWASG CCPLLNRFQL VFYLSLSSTR PDEGLASIIC DQLLEKEGSV TEMCVRNIIQ
541 QLKNQVLFLL DDYKEICSIP QVIGKLIQKN HLSRTCLLIA VRTNRARDIR RYLETILEIK
601 AFPFYNTVCI LRKLFSHNMT RLRKFMVYFG KNQSLQKIQK TPLFVAAICA HWFQYPFDPS
661 FDDVAVFKSY MERLSLRNKA TAEILKATVS SCGELALKGF FSCCFEFNDD DLAEAGVDED
721 EDLTMCLMSK FTAQRLRPFY RFLSPAFQEF LAGMRLIELL DSDRQEHQDL GLYHLKQINS
781 PMMTVSAYNN FLNYVSSLPS TKAGPKIVSH LLHLVDNKES LENISENDDY LKHQPEISLQ
841 MQLLRGLWQI CPQAYFSMVS EHLLVLALKT AYQSNTVAAC SPFVLQFLQG RTLTLGALNL
901 QYFFDHPESL SLLRSIHFPI RGNKTSPRAH FSVLETCFDK SQVPTIDQDY ASAFEPMNEW
961 ERNLAEKEDN VKSYMDMQRR ASPDLSTGYW KLSPKQYKIP CLEVDVNDID VVGQDMLEIL
1021 MTVFSASQRI ELHLNHSRGF IESIRPALEL SKASVTKCSI SKLELSAAEQ ELLLTLPSLE
1081 SLEVSGTIQS QDQIFPNLDK FLCLKELSVD LEGNINVFSV IPEEFPNFHH MEKLLIQISA
1141 EYDPSKLVKL IQNSPNLHVF HLKCNFFSDF GSLMTMLVSC KKLTEIKFSD SFFQAVPFVA
1201 SLPNFISLKI LNLEGQQFPD EETSEKFAYI LGSLSNLEEL ILPTGDGIYR VAKLIIQQCQ
1261 QLHCLRVLSF FKTLNDDSVV EIAKVAISGG FQKLENLKLS INHKITEEGY RNFFQALDNM
1321 PNLQELDISR HFTECIKAQA TTVKSLSQCV LRLPRLIRLN MLSWLLDADD IALLNVMKER
1381 HPQSKYLTIL QKWILPFSPI IQKLocalizationUniProt · AlphaFold · HPA
Whether an antibody against NAIP 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
- Cell surface
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.25
- Highest tissue expression
- 31 nTPM
Expression across tissuesHPA
Tissue
- spleen: 31 nTPM
- spinal cord: 8 nTPM
- lung: 6.8 nTPM
- midbrain: 6.3 nTPM
- adipose tissue: 5.3 nTPM
- hippocampal formation: 4.6 nTPM
Single-cell type
- distal convoluted tubule cells: 167 nCPM
- loop of henle epithelial cells: 133 nCPM
- renal connecting tubule cells: 109 nCPM
- podocytes: 99 nCPM
- renal collecting duct intercalated cells: 97 nCPM
- proximal tubule cells: 80 nCPM
Immune cell
- classical monocyte: 8.3 nTPM
- myeloid DC: 5.2 nTPM
- neutrophil: 4.5 nTPM
- total PBMC: 2.5 nTPM
- intermediate monocyte: 2 nTPM
- non-classical monocyte: 0.5 nTPM
Brain region
- cerebellum: 6.8 nTPM
- thalamus: 6.1 nTPM
- choroid plexus: 5.5 nTPM
- basal ganglia: 5.4 nTPM
- medulla oblongata: 5.4 nTPM
- cerebral cortex: 5.3 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about NAIP.
Disease | ImmuneIEDB
Conditions an epitope on NAIP was assayed in.
- melanoma T cell
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)
- 1.31
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.41
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- apoptotic process
- defense response to bacterium
- detection of bacterium
- icosanoid biosynthetic process
- innate immune response
- negative regulation of apoptotic process
- negative regulation of neuron apoptotic process
- negative regulation of tumor necrosis factor-mediated signaling pathway
- nervous system development
- pattern recognition receptor signaling pathway
- positive regulation of inflammatory response
- positive regulation of interleukin-1 beta production
- positive regulation of JNK cascade
- pyroptotic inflammatory response
- regulation of apoptotic process
Molecular functions
- ATP binding
- cysteine-type endopeptidase inhibitor activity
- cysteine-type endopeptidase inhibitor activity involved in apoptotic process
- metal ion binding
- protein serine/threonine kinase binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- BIR repeat
- AAA+ ATPase domain
- NACHT nucleoside triphosphatase
- P-loop containing nucleoside triphosphate hydrolase
- Leucine-rich repeat domain superfamily
- NLRC4, helical domain
- Nlrc4-like, winged helix domain
- Inhibitor of Apoptosis domain
- NACHT domain
- NLRC4 helical domain
- Nlrc4-like, winged helix domain
- Baculoviral IAP repeat-containing protein 1
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads NAIP as an antibody target. Whether an autoantibody or antibody against NAIP could matter depends on whether native NAIP is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
NAIP is annotated at the cell surface, where native NAIP is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label NAIP as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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