LARP1B
La-related protein 1B
Also known as: DKFZp434K245, DKFZp686E0316, FLJ10378, LAR1B_HUMAN, LARP2
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q659C4
- Gene
- LARP1B
- Ensembl
- ENSG00000138709
- Chromosome
- 4
- Canonical length
- 914 aa
- Protein class
- Predicted intracellular proteins
- Subcellular location
- Cytosol
OverviewNCBI Gene
This gene encodes a protein containing domains found in the La related protein of Drosophila melanogaster. La motif-containing proteins are thought to be RNA-binding proteins, where the La motif and adjacent amino acids fold into an RNA recognition motif. The La motif is also found in proteins unrelated to the La protein. Alternative splicing has been observed at this locus and multiple variants, encoding distinct isoforms, are described. Additional splice variation has been identified but the full-length nature of these transcripts has not been determined. [provided by RefSeq, Jun 2013]
Canonical amino-acid sequenceUniProt
914 residues, UniProt reviewed canonical sequence.
>Q659C4|LARP1B
1 MENWPTPSEL VNTGFQSVLS QGNKKPQNRK EKEEKVEKRS NSDSKENRET KLNGPGENVS
61 EDEAQSSNQR KRANKHKWVP LHLDVVRSES QERPGSRNSS RCQPEANKPT HNNRRNDTRS
121 WKRDREKRDD QDDVSSVRSE GGNIRGSFRG RGRGRGRGRG RGRGNPRLNF DYSYGYQEHG
181 ERTDQPFQTE LNTSMMYYYD DGTGVQVYPV EEALLKEYIK RQIEYYFSVE NLERDFFLRG
241 KMDEQGFLPI SLIAGFQRVQ ALTTNLNLIL EALKDSTEVE IVDEKMRKKI EPEKWPIPGP
301 PPRSVPPTDF SQLIDCPEFV PGQAFCSHTE SAPNSPRIGS PLSPKKNSET SILQAMSRGL
361 STSLPDLDSE PWIEVKKRHQ PAPVKLRESV SVPEGSLNQL CSSEEPEQEE LDFLFDEEIE
421 QIGRKNTFTD WSDNDSDYEI DDQDLNKILI VTQTPPYVKK HPGGDRTGTH MSRAKITSEL
481 AKVINDGLYY YEQDLWMEED ENKHTAIKQE VENFKKLNLI SKEQFENLTP ELPFEPNQEV
541 PVAPSQSRQG GVQGVLHIPK KDLTDELAQK LFDVSEITSA AMVHSLPTAV PESPRIHPTR
601 TPKTPRTPRL QDPNKTPRFY PVVKEPKAID VKSPRKRKTR HSTNPPLECH VGWVMDSRDR
661 GPGTSSVSTS NASPSEGAPL AGSYGCTPHS FPKFQHPSHE LLKENGFTQQ VYHKYRRRCL
721 SERKRLGIGQ SQEMNTLFRF WSFFLRDHFN KKMYEEFRQL AWEDAKENYR YGLECLFRFY
781 SYGLEKKFRR EIFQDFQEET KKDYESGQLY GLEKFWAYLK YSQSKTQSID PKLQEYLCSF
841 KRLEDFRVDP PISDEFGRKR HSSTSGEESN RHRLPPNSST KPPNAAKPTS TSELQVPINS
901 PRRNISPESS DNSHLocalizationUniProt · AlphaFold · HPA
Whether an antibody against LARP1B 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)
- 0.56
- Highest tissue expression
- 46 nTPM
Expression across tissuesHPA
Tissue
- liver: 46 nTPM
- testis: 45 nTPM
- pancreas: 34 nTPM
- epididymis: 22 nTPM
- skeletal muscle: 18 nTPM
- rectum: 15 nTPM
Single-cell type
- late spermatids: 745 nCPM
- early spermatids: 613 nCPM
- late primary spermatocytes: 570 nCPM
- gonadotrophs: 354 nCPM
- hepatocytes: 276 nCPM
- epididymal principal cells: 271 nCPM
Immune cell
- plasmacytoid DC: 4.6 nTPM
- MAIT T-cell: 3.1 nTPM
- NK-cell: 2.6 nTPM
- myeloid DC: 2.4 nTPM
- memory CD8 T-cell: 2.2 nTPM
- classical monocyte: 2.1 nTPM
Brain region
- cerebellum: 31 nTPM
- cerebral cortex: 30 nTPM
- white matter: 30 nTPM
- hypothalamus: 26 nTPM
- basal ganglia: 25 nTPM
- amygdala: 24 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)
- 0.69
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.52
- DepMap mean gene effect
- 0.13
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads LARP1B as an antibody target. Whether an autoantibody or antibody against LARP1B could matter depends on whether native LARP1B is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
LARP1B 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 LARP1B as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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