APBA2

Amyloid beta (A4) precursor protein-binding, family A, member 2
PDB rendering based on 1u39.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 1u39​, 1y7n​
Identifiers
Symbols	APBA2 ; D15S1518E; HsT16821; LIN-10; MGC:14091; MINT2; X11-BETA; X11L
External IDs	OMIM: 602712 MGI: 1261791 HomoloGene: 4021 GeneCards: APBA2 Gene
Gene ontology Molecular function • beta-amyloid binding • protein binding Cellular component • plasma membrane • synaptic vesicle Biological process • in utero embryonic development • synaptic transmission • nervous system development • locomotory behavior • regulation of gene expression • protein transport • multicellular organism growth Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	321	11784
Ensembl	ENSG00000034053	ENSMUSG00000030519
UniProt	Q99767	P98084
RefSeq (mRNA)	NM_001130414	NM_001291166
RefSeq (protein)	NP_001123886	NP_001278095
Location (UCSC)	Chr 15: 28.88 – 29.12 Mb	Chr 7: 64.5 – 64.75 Mb
PubMed search

Amyloid beta A4 precursor protein-binding family A member 2 is a protein that in humans is encoded by the APBA2 gene.^[1][2]

Function

The protein encoded by this gene is a member of the X11 protein family. It is a neuronal adaptor protein that interacts with the Alzheimer's disease amyloid precursor protein (APP). It stabilises APP and inhibits production of proteolytic APP fragments including the A beta peptide that is deposited in the brains of Alzheimer's disease patients. This gene product is believed to be involved in signal transduction processes. It is also regarded as a putative vesicular trafficking protein in the brain that can form a complex with the potential to couple synaptic vesicle exocytosis to neuronal cell adhesion.^[2]

Interactions

APBA2 has been shown to interact with CLSTN1,^[3][4] RELA^[5] and Amyloid precursor protein.^[3][6][7]

References

1. McLoughlin DM, Miller CC (January 1997). "The intracellular cytoplasmic domain of the Alzheimer's disease amyloid precursor protein interacts with phosphotyrosine-binding domain proteins in the yeast two-hybrid system". FEBS Lett 397 (2–3): 197–200. doi:10.1016/S0014-5793(96)01128-3. PMID 8955346.
2. "Entrez Gene: APBA2 amyloid beta (A4) precursor protein-binding, family A, member 2 (X11-like)".
3. Araki Y, Tomita S, Yamaguchi H, Miyagi N, Sumioka A, Kirino Y, Suzuki T (December 2003). "Novel cadherin-related membrane proteins, Alcadeins, enhance the X11-like protein-mediated stabilization of amyloid beta-protein precursor metabolism". J. Biol. Chem. 278 (49): 49448–58. doi:10.1074/jbc.M306024200. PMID 12972431.
4. Araki Y, Miyagi N, Kato N, Yoshida T, Wada S, Nishimura M, Komano H, Yamamoto T, De Strooper B, Yamamoto K, Suzuki T (June 2004). "Coordinated metabolism of Alcadein and amyloid beta-protein precursor regulates FE65-dependent gene transactivation". J. Biol. Chem. 279 (23): 24343–54. doi:10.1074/jbc.M401925200. PMID 15037614.
5. Tomita S, Fujita T, Kirino Y, Suzuki T (April 2000). "PDZ domain-dependent suppression of NF-kappaB/p65-induced Abeta42 production by a neuron-specific X11-like protein". J. Biol. Chem. 275 (17): 13056–60. doi:10.1074/jbc.C000019200. PMID 10777610.
6. Biederer T, Cao X, Südhof TC, Liu X (September 2002). "Regulation of APP-dependent transcription complexes by Mint/X11s: differential functions of Mint isoforms". J. Neurosci. 22 (17): 7340–51. PMID 12196555.
7. Tomita S, Ozaki T, Taru H, Oguchi S, Takeda S, Yagi Y, Sakiyama S, Kirino Y, Suzuki T (January 1999). "Interaction of a neuron-specific protein containing PDZ domains with Alzheimer's amyloid precursor protein". J. Biol. Chem. 274 (4): 2243–54. doi:10.1074/jbc.274.4.2243. PMID 9890987.

Further reading

• van der Geer P, Pawson T (1995). "The PTB domain: a new protein module implicated in signal transduction". Trends Biochem. Sci. 20 (7): 277–80. doi:10.1016/S0968-0004(00)89043-X. PMID 7545337.
• Andersson B, Wentland MA, Ricafrente JY, Liu W, Gibbs RA (1996). "A "double adaptor" method for improved shotgun library construction". Anal. Biochem. 236 (1): 107–13. doi:10.1006/abio.1996.0138. PMID 8619474.
• Yu W, Andersson B, Worley KC, Muzny DM, Ding Y, Liu W, Ricafrente JY, Wentland MA, Lennon G, Gibbs RA (1997). "Large-scale concatenation cDNA sequencing". Genome Res. 7 (4): 353–8. doi:10.1101/gr.7.4.353. PMC 139146. PMID 9110174.
• Okamoto M, Südhof TC (1998). "Mints, Munc18-interacting proteins in synaptic vesicle exocytosis". J. Biol. Chem. 272 (50): 31459–64. doi:10.1074/jbc.272.50.31459. PMID 9395480.
• Blanco G, Irving NG, Brown SD, Miller CC, McLoughlin DM (1998). "Mapping of the human and murine X11-like genes (APBA2 and apba2), the murine Fe65 gene (Apbb1), and the human Fe65-like gene (APBB2): genes encoding phosphotyrosine-binding domain proteins that interact with the Alzheimer's disease amyloid precursor protein". Mamm. Genome 9 (6): 473–5. doi:10.1007/s003359900800. PMID 9585438.
• Borg JP, Yang Y, De Taddéo-Borg M, Margolis B, Turner RS (1998). "The X11alpha protein slows cellular amyloid precursor protein processing and reduces Abeta40 and Abeta42 secretion". J. Biol. Chem. 273 (24): 14761–6. doi:10.1074/jbc.273.24.14761. PMID 9614075.
• Borg JP, Straight SW, Kaech SM, de Taddéo-Borg M, Kroon DE, Karnak D, Turner RS, Kim SK, Margolis B (1998). "Identification of an evolutionarily conserved heterotrimeric protein complex involved in protein targeting". J. Biol. Chem. 273 (48): 31633–6. doi:10.1074/jbc.273.48.31633. PMID 9822620.
• Okamoto M, Südhof TC (1999). "Mint 3: a ubiquitous mint isoform that does not bind to munc18-1 or -2". Eur. J. Cell Biol. 77 (3): 161–5. doi:10.1016/s0171-9335(98)80103-9. PMID 9860131.
• Tomita S, Ozaki T, Taru H, Oguchi S, Takeda S, Yagi Y, Sakiyama S, Kirino Y, Suzuki T (1999). "Interaction of a neuron-specific protein containing PDZ domains with Alzheimer's amyloid precursor protein". J. Biol. Chem. 274 (4): 2243–54. doi:10.1074/jbc.274.4.2243. PMID 9890987.
• McLoughlin DM, Irving NG, Brownlees J, Brion JP, Leroy K, Miller CC (1999). "Mint2/X11-like colocalizes with the Alzheimer's disease amyloid precursor protein and is associated with neuritic plaques in Alzheimer's disease". Eur. J. Neurosci. 11 (6): 1988–94. doi:10.1046/j.1460-9568.1999.00610.x. PMID 10336668.
• Tomita S, Fujita T, Kirino Y, Suzuki T (2000). "PDZ domain-dependent suppression of NF-kappaB/p65-induced Abeta42 production by a neuron-specific X11-like protein". J. Biol. Chem. 275 (17): 13056–60. doi:10.1074/jbc.C000019200. PMID 10777610.
• Gotthardt M, Trommsdorff M, Nevitt MF, Shelton J, Richardson JA, Stockinger W, Nimpf J, Herz J (2000). "Interactions of the low density lipoprotein receptor gene family with cytosolic adaptor and scaffold proteins suggest diverse biological functions in cellular communication and signal transduction". J. Biol. Chem. 275 (33): 25616–24. doi:10.1074/jbc.M000955200. PMID 10827173.
• Lee DS, Tomita S, Kirino Y, Suzuki T (2000). "Regulation of X11L-dependent amyloid precursor protein metabolism by XB51, a novel X11L-binding protein". J. Biol. Chem. 275 (30): 23134–8. doi:10.1074/jbc.C000302200. PMID 10833507.
• Biederer T, Südhof TC (2001). "Mints as adaptors. Direct binding to neurexins and recruitment of munc18". J. Biol. Chem. 275 (51): 39803–6. doi:10.1074/jbc.C000656200. PMID 11036064.
• Lau KF, McLoughlin DM, Standen C, Miller CC (2001). "X11 alpha and x11 beta interact with presenilin-1 via their PDZ domains". Mol. Cell. Neurosci. 16 (5): 557–65. doi:10.1006/mcne.2000.0898. PMID 11083918.
• Sutcliffe JS, Han MK, Amin T, Kesterson RA, Nurmi EL (2003). "Partial duplication of the APBA2 gene in chromosome 15q13 corresponds to duplicon structures". BMC Genomics 4: 15. doi:10.1186/1471-2164-4-15. PMC 156605. PMID 12720574.
• Sumioka A, Imoto S, Martins RN, Kirino Y, Suzuki T (2003). "XB51 isoforms mediate Alzheimer's beta-amyloid peptide production by X11L (X11-like protein)-dependent and -independent mechanisms". Biochem. J. 374 (Pt 1): 261–8. doi:10.1042/BJ20030489. PMC 1223589. PMID 12780348.