GoPubMed Proteins lists recent and important papers and reviews for
proteins. Page last changed on 15 May 2015.
Collagen-like tail subunit
This gene encodes the subunit of a collagen-like molecule associated with acetylcholinesterase in skeletal muscle. Each molecule is composed of three identical subunits. Each subunit contains a proline-rich attachment domain (PRAD) that binds an acetylcholinesterase tetramer to anchor the catalytic subunit of the enzyme to the basal lamina. Mutations in this gene are associated with endplate acetylcholinesterase deficiency. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008] (from
Chatonnet et al., Birmingham, United States. In Comp Biochem Physiol B Biochem Mol Biol, Mar 2015
The cDNA codes for an AChE (AChE1), which is found in monomeric (G1), dimeric (G2), and tetrameric (G4) forms; and interacts with poly-L-proline, PRiMA, and ColQ, characteristic of an AChE possessing a T-peptide.
Xu et al., Philadelphia, United States. In Neuromuscul Disord, Mar 2015
In patient 1, whole exome sequencing revealed compound heterozygous mutations c.1228C > T (p.Arg410Trp) and c.679C > T (p.Arg227*) in collagen-like tail subunit (single strand of homotrimer) of asymmetric acetylcholinesterase (COLQ).
Ali et al., Al `Ayn, United Arab Emirates. In Pediatr Neurol, Jul 2014
To date, all reported cases have been attributed to mutations in 18 genes including the COLQ gene that encodes a specific collagen that anchors acetylcholinesterase at the basal lamina of the neuromuscular junction.
Maselli et al., Davis, United States. In Hum Genet, May 2014
Collagen Q (ColQ) is a key multidomain functional protein of the neuromuscular junction (NMJ), crucial for anchoring acetylcholinesterase (AChE) to the basal lamina (BL) and accumulating AChE at the NMJ.
Layzer et al., San Francisco, United States. In Muscle Nerve, 2013
CONCLUSIONS: We hypothesize that MuSK antibodies may induce these phenotypes through disruptive actions at the NMJ, in particular the binding of acetylcholinesterase (AChE) to MuSK via its collagen Q (ColQ) tail, producing a reduction in synaptic AChE activity.
Krejci et al., Paris, France. In Mol Cell Neurosci, 2011
Data show that along the nerve terminus the vast majority of acetylcholinesterase is anchored by collagen Q that is only produced by the muscle, whereas very minor amounts of AChE are anchored by PRiMA that is produced by motoneurons.