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Lamin B receptor

From Wikipedia, the free encyclopedia
LBR
Available structures
PDBOrtholog search: C9JXK0 PDBe C9JXK0 RCSB
Identifiers
AliasesLBR, DHCR14B, LMN2R, PHA, TDRD18, lamin B receptor, PHASK, C14SR
External IDsOMIM: 600024; MGI: 2138281; HomoloGene: 2455; GeneCards: LBR; OMA:LBR - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_002296
NM_194442

NM_133815

RefSeq (protein)

NP_002287
NP_919424

NP_598576

Location (UCSC)Chr 1: 225.4 – 225.43 MbChr 1: 181.64 – 181.67 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Lamin-B receptor is a protein, and in humans, it is encoded by the LBR gene.[5][6][7]

Function

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The protein encoded by this gene belongs to the ERG4/ERG24 family. It localizes to the inner membrane of the nuclear envelope and anchors the lamina and the heterochromatin to the membrane. It may mediate the interaction between chromatin and lamin B. Mutations of this gene has been associated with autosomal recessive HEM/Greenberg skeletal dysplasia. Alternative splicing occurs at this locus and two transcript variants encoding the same protein have been identified.[7]

Clinical significance

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There is evidence tying it to Greenberg dysplasia[8] and Pelger-Huet anomaly.[9]

Interactions

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Lamin B receptor has been shown to interact with CBX3[10] and CBX5.[10] LBR also interacts with long non-coding RNA XIST in mouse cells and potentially assist the spreading XIST across X chromosome in differentiating female embryonic stem cells,[11] but it might be redundant for correct XCI in vivo.[12]

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000143815Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000004880Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Schuler E, Lin F, Worman HJ (April 1994). "Characterization of the human gene encoding LBR, an integral protein of the nuclear envelope inner membrane". The Journal of Biological Chemistry. 269 (15): 11312–7. doi:10.1016/S0021-9258(19)78127-7. PMID 8157663.
  6. ^ Holmer L, Pezhman A, Worman HJ (December 1998). "The human lamin B receptor/sterol reductase multigene family". Genomics. 54 (3): 469–76. doi:10.1006/geno.1998.5615. PMID 9878250.
  7. ^ a b "Entrez Gene: LBR lamin B receptor".
  8. ^ Online Mendelian Inheritance in Man (OMIM): 215140
  9. ^ Online Mendelian Inheritance in Man (OMIM): 169400
  10. ^ a b Ye Q, Worman HJ (June 1996). "Interaction between an integral protein of the nuclear envelope inner membrane and human chromodomain proteins homologous to Drosophila HP1". The Journal of Biological Chemistry. 271 (25): 14653–6. doi:10.1074/jbc.271.25.14653. PMID 8663349.
  11. ^ Chen CK, Blanco M, Jackson C, Aznauryan E, Ollikainen N, Surka C, Chow A, Cerase A, McDonel P, Guttman M (October 2016). "Xist recruits the X chromosome to the nuclear lamina to enable chromosome-wide silencing". Science. 354 (6311): 468–472. Bibcode:2016Sci...354..468C. doi:10.1126/science.aae0047. PMID 27492478.
  12. ^ Young, Alexander Neil; Perlas, Emerald; Ruiz-Blanes, Nerea; Hierholzer, Andreas; Pomella, Nicola; Martin-Martin, Belen; Liverziani, Alessandra; Jachowicz, Joanna W.; Giannakouros, Thomas; Cerase, Andrea (2021-04-12). "Deletion of LBR N-terminal domains recapitulates Pelger-Huet anomaly phenotypes in mouse without disrupting X chromosome inactivation". Communications Biology. 4 (1): 478. doi:10.1038/s42003-021-01944-2. ISSN 2399-3642. PMC 8041748. PMID 33846535.

Further reading

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