CHRNA1

From Wikipedia, the free encyclopedia

Cholinergic receptor, nicotinic, alpha 1 (muscle)

Identifiers

CHRNA1; ACHRA; ACHRD; CHRNA; CMS2A; FCCMS; SCCMS

External IDs

Gene ontology
Molecular Function:	• nicotinic acetylcholine-activated cation-selective channel activity • ion channel activity • extracellular ligand-gated ion channel activity • acetylcholine receptor activity
Cellular Component:	• Golgi apparatus • plasma membrane • nicotinic acetylcholine-gated receptor-channel complex • integral to membrane • postsynaptic membrane
Biological Process:	• ion transport • muscle contraction • signal transduction

RNA expression pattern

More reference expression data

Orthologs

Human

Mouse

Refseq

NM_000079 (mRNA)
NP_000070 (protein)

XM_984917 (mRNA)
XP_990011 (protein)

Location

Chr 2: 175.32 - 175.34 Mb

Chr 2: 73.36 - 73.38 Mb

Pubmed search

[1]

[2]

Cholinergic receptor, nicotinic, alpha 1 (muscle), also known as CHRNA1, is a human gene.^[1]

The muscle acetylcholine receptor consiststs of 5 subunits of 4 different types: 2 alpha isoforms and 1 each of beta, gamma, and delta subunits.2 This gene encodes an alpha subunit that plays a role in acetlycholine binding/channel gating. Alternatively spliced transcript variants encoding different isoforms have been identified.^[1]

1 See also
2 References
3 Further reading
4 External links

[edit] See also

Nicotinic acetylcholine receptor

[edit] References

^ ^a ^b Entrez Gene: CHRNA1 cholinergic receptor, nicotinic, alpha 1 (muscle).

[edit] Further reading

Bracci L, Lozzi L, Rustici M, Neri P (1992). "Binding of HIV-1 gp120 to the nicotinic receptor.". FEBS Lett. 311 (2): 115–8. PMID 1397297.
Beeson D, Morris A, Vincent A, Newsom-Davis J (1990). "The human muscle nicotinic acetylcholine receptor alpha-subunit exist as two isoforms: a novel exon.". EMBO J. 9 (7): 2101–6. PMID 1694127.
Yu XM, Hall ZW (1991). "Extracellular domains mediating epsilon subunit interactions of muscle acetylcholine receptor.". Nature 352 (6330): 64–7. doi:10.1038/352064a0. PMID 1712080.
Beeson D, Jeremiah S, West LF, et al. (1990). "Assignment of the human nicotinic acetylcholine receptor genes: the alpha and delta subunit genes to chromosome 2 and the beta subunit gene to chromosome 17.". Ann. Hum. Genet. 54 (Pt 3): 199–208. PMID 2221824.
Hohlfeld R, Toyka KV, Miner LL, et al. (1988). "Amphipathic segment of the nicotinic receptor alpha subunit contains epitopes recognized by T lymphocytes in myasthenia gravis.". J. Clin. Invest. 81 (3): 657–60. PMID 2449458.
Schoepfer R, Luther M, Lindstrom J (1988). "The human medulloblastoma cell line TE671 expresses a muscle-like acetylcholine receptor. Cloning of the alpha-subunit cDNA.". FEBS Lett. 226 (2): 235–40. PMID 3338555.
Oosterhuis HJ, Newsom-Davis J, Wokke JH, et al. (1987). "The slow channel syndrome. Two new cases.". Brain 110 ( Pt 4): 1061–79. PMID 3651795.
Noda M, Furutani Y, Takahashi H, et al. (1983). "Cloning and sequence analysis of calf cDNA and human genomic DNA encoding alpha-subunit precursor of muscle acetylcholine receptor.". Nature 305 (5937): 818–23. PMID 6688857.
Vincent A, Cull-Candy SG, Newsom-Davis J, et al. (1981). "Congenital myasthenia: end-plate acetylcholine receptors and electrophysiology in five cases.". Muscle Nerve 4 (4): 306–18. doi:10.1002/mus.880040407. PMID 7254233.
Sine SM, Ohno K, Bouzat C, et al. (1995). "Mutation of the acetylcholine receptor alpha subunit causes a slow-channel myasthenic syndrome by enhancing agonist binding affinity.". Neuron 15 (1): 229–39. PMID 7619526.
Kreienkamp HJ, Maeda RK, Sine SM, Taylor P (1995). "Intersubunit contacts governing assembly of the mammalian nicotinic acetylcholine receptor.". Neuron 14 (3): 635–44. PMID 7695910.
Gattenlöhner S, Brabletz T, Schultz A, et al. (1995). "Cloning of a cDNA coding for the acetylcholine receptor alpha-subunit from a thymoma associated with myasthenia [correction of myastenia] gravis.". Thymus 23 (2): 103–13. PMID 7725386.
Chauplannaz G, Bady B (1995). "[Hereditary myasthenic syndromes with late onset. Value of electrophysiological tests]". Rev. Neurol. (Paris) 150 (2): 142–8. PMID 7863154.
Lobos EA (1993). "Five subunit genes of the human muscle nicotinic acetylcholine receptor are mapped to two linkage groups on chromosomes 2 and 17.". Genomics 17 (3): 642–50. doi:10.1006/geno.1993.1384. PMID 7902325.
Green WN, Claudio T (1993). "Acetylcholine receptor assembly: subunit folding and oligomerization occur sequentially.". Cell 74 (1): 57–69. PMID 8334706.
Talib S, Okarma TB, Lebkowski JS (1993). "Differential expression of human nicotinic acetylcholine receptor alpha subunit variants in muscle and non-muscle tissues.". Nucleic Acids Res. 21 (2): 233–7. PMID 8441631.
Engel AG, Ohno K, Milone M, et al. (1997). "New mutations in acetylcholine receptor subunit genes reveal heterogeneity in the slow-channel congenital myasthenic syndrome.". Hum. Mol. Genet. 5 (9): 1217–27. PMID 8872460.
Wang ZZ, Hardy SF, Hall ZW (1996). "Assembly of the nicotinic acetylcholine receptor. The first transmembrane domains of truncated alpha and delta subunits are required for heterodimer formation in vivo.". J. Biol. Chem. 271 (44): 27575–84. PMID 8910344.
Croxen R, Newland C, Beeson D, et al. (1997). "Mutations in different functional domains of the human muscle acetylcholine receptor alpha subunit in patients with the slow-channel congenital myasthenic syndrome.". Hum. Mol. Genet. 6 (5): 767–74. PMID 9158151.
Milone M, Wang HL, Ohno K, et al. (1997). "Slow-channel myasthenic syndrome caused by enhanced activation, desensitization, and agonist binding affinity attributable to mutation in the M2 domain of the acetylcholine receptor alpha subunit.". J. Neurosci. 17 (15): 5651–65. PMID 9221765.

[edit] External links

MeSH CHRNA1+protein,+human

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v • d • e Ion channel, receptor: ligand-gated ion channels

Cys-loop receptors	5-HT/serotonin: 5-HT₃ (A) GABA: GABA A (α₁, α₂, α₃, α₄, α₅, α₆, β₁, β₂, β₃, γ₂, γ₃, δ, ε, π), GABA C (ρ₁, ρ₂) Glycine: α₁, α₂, β Nicotinic acetylcholine: α1, α2, α3, α4, α5, α7, α9, β1, β2, β3, β4, δ, ε, combinations ((α4)₂(β2)₃, (α7)₅, Ganglion type, Muscle type)

Ionotropic glutamates	AMPA (1, 2, 3, 4) - Kainate (1, 2, 3, 5) - NMDA (1, 2A, 2B, 2C, 2D)

ATP-gated channels	Purinergic receptors: P2X (1, 2, 3, 4, 5, 6, 7)