POM121

Nuclear envelope pore membrane protein POM 121 is a protein that in humans is encoded by the POM121 gene.[5][6][7] Alternatively spliced variants that encode different protein isoforms have been described but the full-length nature of only one has been determined.[8]

POM121
Identifiers
Aliases	POM121, P145, POM121A, POM121 transmembrane nucleoporin
External IDs	OMIM: 615753 MGI: 2137624 HomoloGene: 70878 GeneCards: POM121
Gene location (Human) Chr. Chromosome 7 (human)[1] Band 7q11.23 Start 72,879,365 bp[1] End 72,951,440 bp[1]
Gene location (Mouse) Chr. Chromosome 5 (mouse)[2] Band 5|5 G2 Start 135,376,141 bp[2] End 135,394,546 bp[2]
RNA expression pattern More reference expression data
Gene ontology Molecular function • GO:0001948 protein binding • GO:0005487 structural constituent of nuclear pore • nuclear localization sequence binding Cellular component • integral component of membrane • nuclear envelope • endoplasmic reticulum membrane • membrane • endoplasmic reticulum • cell nucleus • nuclear pore central transport channel • nuclear pore nuclear basket • nucleoplasm • nuclear membrane • nuclear pore • host cell Biological process • mRNA transport • protein transport • GO:0022415 viral process • mRNA export from nucleus • RNA export from nucleus • protein import into nucleus • regulation of glycolytic process • tRNA export from nucleus • protein sumoylation • viral transcription • regulation of gene silencing by miRNA • GO:0046795 intracellular transport of virus • regulation of cellular response to heat Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	9883	107939
Ensembl	ENSG00000196313	ENSMUSG00000053293
UniProt	Q96HA1	Q8K3Z9
RefSeq (mRNA)	NM_001257190 NM_172020 NM_001367610	NM_148932
RefSeq (protein)	NP_001244119 NP_742017 NP_001354539	NP_683734
Location (UCSC)	Chr 7: 72.88 – 72.95 Mb	Chr 5: 135.38 – 135.39 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Function

The nuclear envelope creates distinct nuclear and cytoplasmic compartments in eukaryotic cells. It consists of two concentric membranes perforated by nuclear pores, large protein complexes that form aqueous channels to regulate the flow of macromolecules between the nucleus and the cytoplasm. These complexes are composed of at least 100 different polypeptide subunits, many of which belong to the nucleoporin family. This gene encodes a member of the FG-repeat-containing nucleoporins. The protein encoded by this gene is an integral membrane protein that localizes to the central spoke ring complex and participates in anchoring the nuclear pore complex to the nuclear envelope.[8]

Antibodies against this protein can be used to identify the nuclear envelope in immunofluorescence experiments.[9]

References

1. GRCh38: Ensembl release 89: ENSG00000196313 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000053293 - Ensembl, 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. Hallberg E, Wozniak RW, Blobel G (Aug 1993). "An integral membrane protein of the pore membrane domain of the nuclear envelope contains a nucleoporin-like region". J Cell Biol. 122 (3): 513–21. doi:10.1083/jcb.122.3.513. PMC 2119659. PMID 8335683.
6. Ishikawa K, Nagase T, Suyama M, Miyajima N, Tanaka A, Kotani H, Nomura N, Ohara O (Dec 1998). "Prediction of the coding sequences of unidentified human genes. X. The complete sequences of 100 new cDNA clones from brain which can code for large proteins in vitro". DNA Res. 5 (3): 169–76. doi:10.1093/dnares/5.3.169. PMID 9734811.
7. Funakoshi T, Maeshima K, Yahata K, Sugano S, Imamoto F, Imamoto N (Oct 2007). "Two distinct human POM121 genes: requirement for the formation of nuclear pore complexes". FEBS Lett. 581 (25): 4910–6. doi:10.1016/j.febslet.2007.09.021. PMID 17900573.
8. "Entrez Gene: POM121 POM121 membrane glycoprotein (homo sapiens)".
9. Kihlmark M, Imreh G, Hallberg E (October 2001). "Sequential degradation of proteins from the nuclear envelope during apoptosis". J. Cell Sci. 114 (Pt 20): 3643–53. PMID 11707516.

Further reading

• Bodoor K, Shaikh S, Enarson P, et al. (1999). "Function and assembly of nuclear pore complex proteins". Biochem. Cell Biol. 77 (4): 321–9. doi:10.1139/bcb-77-4-321. PMID 10546895.
• Kipersztok S, Osawa GA, Liang LF, et al. (1995). "POM-ZP3, a bipartite transcript derived from human ZP3 and a POM121 homologue". Genomics. 25 (2): 354–9. doi:10.1016/0888-7543(95)80033-I. PMID 7789967.
• Fouchier RA, Meyer BE, Simon JH, et al. (1998). "Interaction of the Human Immunodeficiency Virus Type 1 Vpr Protein with the Nuclear Pore Complex". J. Virol. 72 (7): 6004–13. PMC 110405. PMID 9621063.
• Daigle N, Beaudouin J, Hartnell L, et al. (2001). "Nuclear pore complexes form immobile networks and have a very low turnover in live mammalian cells". J. Cell Biol. 154 (1): 71–84. doi:10.1083/jcb.200101089. PMC 2196857. PMID 11448991.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Hillier LW, Fulton RS, Fulton LA, et al. (2003). "The DNA sequence of human chromosome 7". Nature. 424 (6945): 157–64. doi:10.1038/nature01782. PMID 12853948.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Eriksson C, Rustum C, Hallberg E (2004). "Dynamic properties of nuclear pore complex proteins in gp210 deficient cells". FEBS Lett. 572 (1–3): 261–5. doi:10.1016/j.febslet.2004.07.044. PMID 15304359.
• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514.
• Lim J, Hao T, Shaw C, et al. (2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration". Cell. 125 (4): 801–14. doi:10.1016/j.cell.2006.03.032. PMID 16713569.
• Olsen JV, Blagoev B, Gnad F, et al. (2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–48. doi:10.1016/j.cell.2006.09.026. PMID 17081983.