Sigma non-opioid intracellular receptor 1

NameSigma non-opioid intracellular receptor 1
Synonyms
  • Aging-associated gene 8 protein
  • hSigmaR1
  • OPRS1
  • SIG-1R
  • Sigma 1-type opioid receptor
  • Sigma1-receptor
  • Sigma1R
  • SR-BP
  • SR31747-binding protein
  • SRBP
Gene NameSIGMAR1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0000311|Sigma non-opioid intracellular receptor 1
MQWAVGRRWAWAALLLAVAAVLTQVVWLWLGTQSFVFQREEIAQLARQYAGLDHELAFSR
LIVELRRLHPGHVLPDEELQWVFVNAGGWMGAMCLLHASLSEYVLLFGTALGSRGHSGRY
WAEISDTIISGTFHQWREGTTKSEVFYPGETVVHGPGEATAVEWGPNTWMVEYGRGVIPS
TLAFALADTVFSTQDFLTLFYTLRSYARGLRLELTTYLFGQDP
Number of residues223
Molecular Weight25127.52
Theoretical pI5.87
GO Classification
Functions
  • drug binding
  • opioid receptor activity
Processes
  • nervous system development
  • regulation of neuron apoptotic process
  • lipid transport
Components
  • cell junction
  • integral component of membrane
  • integral component of plasma membrane
  • nuclear outer membrane
  • lipid particle
  • growth cone
  • neuronal postsynaptic density
  • nuclear envelope
  • nuclear inner membrane
  • endoplasmic reticulum membrane
General FunctionOpioid receptor activity
Specific FunctionFunctions in lipid transport from the endoplasmic reticulum and is involved in a wide array of cellular functions probably through regulation of the biogenesis of lipid microdomains at the plasma membrane. Involved in the regulation of different receptors it plays a role in BDNF signaling and EGF signaling. Also regulates ion channels like the potassium channel and could modulate neurotransmitter release. Plays a role in calcium signaling through modulation together with ANK2 of the ITP3R-dependent calcium efflux at the endoplasmic reticulum. Plays a role in several other cell functions including proliferation, survival and death. Originally identified for its ability to bind various psychoactive drugs it is involved in learning processes, memory and mood alteration (PubMed:16472803, PubMed:9341151). Necessary for proper mitochondrial axonal transport in motor neurons, in particular the retrograde movement of mitochondria (By similarity).
Pfam Domain Function
Transmembrane Regions10-30 81-101
GenBank Protein ID1783387
UniProtKB IDQ99720
UniProtKB Entry NameSGMR1_HUMAN
Cellular LocationNucleus inner membrane
Gene sequence
>lcl|BSEQ0009974|Sigma non-opioid intracellular receptor 1 (SIGMAR1)
ATGCAGTGGGCCGTGGGCCGGCGGTGGGCGTGGGCCGCGCTGCTCCTGGCTGTCGCAGCG
GTGCTGACCCAGGTCGTCTGGCTCTGGCTGGGTACGCAGAGCTTCGTCTTCCAGCGCGAA
GAGATAGCGCAGTTGGCGCGGCAGTACGCTGGGCTGGACCACGAGCTGGCCTTCTCTCGT
CTGATCGTGGAGCTGCGGCGGCTGCACCCAGGCCACGTGCTGCCCGACGAGGAGCTGCAG
TGGGTGTTCGTGAATGCGGGTGGCTGGATGGGCGCCATGTGCCTTCTGCACGCCTCGCTG
TCCGAGTATGTGCTGCTCTTCGGCACCGCCTTGGGCTCCCGCGGCCACTCGGGGCGCTAC
TGGGCTGAGATCTCGGATACCATCATCTCTGGCACCTTCCACCAGTGGAGAGAGGGCACC
ACCAAAAGTGAGGTCTTCTACCCAGGACCCTTGACCAGCCAGGCCTGA
GenBank Gene IDU75283
GeneCard IDNot Available
GenAtlas IDOPRS1
HGNC IDHGNC:8157
Chromosome Location9
Locus9p13.3
References
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  2. Jbilo O, Vidal H, Paul R, De Nys N, Bensaid M, Silve S, Carayon P, Davi D, Galiegue S, Bourrie B, Guillemot JC, Ferrara P, Loison G, Maffrand JP, Le Fur G, Casellas P: Purification and characterization of the human SR 31747A-binding protein. A nuclear membrane protein related to yeast sterol isomerase. J Biol Chem. 1997 Oct 24;272(43):27107-15. 9341151
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