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Gene: SMPX (small muscle protein X-linked) Homo sapiens
Symbol: SMPX
Name: small muscle protein X-linked
Description: Predicted to be involved in striated muscle contraction. Predicted to localize to the M band; costamere; and muscle tendon junction. Implicated in X-linked nonsyndromic deafness.
Type: protein-coding
RefSeq Status: REVIEWED
Also known as: Chisel; Csl; deafness, X-linked 6, sensorineural; DFN6; DFNX4; small muscle protein, X-linked; small muscular protein; stretch-responsive skeletal muscle protein
Mus musculus (house mouse) : Smpx (small muscle protein, X-linked)  MGI  Alliance
Rattus norvegicus (Norway rat) : Smpx (small muscle protein, X-linked)  Alliance
Chinchilla lanigera (long-tailed chinchilla) : Smpx (small muscle protein X-linked)
Pan paniscus (bonobo/pygmy chimpanzee) : SMPX (small muscle protein, X-linked)
Canis lupus familiaris (dog) : SMPX (small muscle protein X-linked)
Ictidomys tridecemlineatus (thirteen-lined ground squirrel) : Smpx (small muscle protein X-linked)
Sus scrofa (pig) : SMPX (small muscle protein X-linked)
Chlorocebus sabaeus (green monkey) : SMPX (small muscle protein X-linked)
Heterocephalus glaber (naked mole-rat) : Smpx (small muscle protein X-linked)
more info ...
Allele / Splice: See ClinVar data
Latest Assembly: GRCh38 - Human Genome Assembly GRCh38
Human AssemblyChrPosition (strand)SourceGenome Browsers
GRCh38 EnsemblX21,705,978 - 21,758,116 (-)Ensembl
GRCh38X21,705,978 - 21,758,116 (-)NCBIGRCh38GRCh38hg38GRCh38
GRCh37X21,724,090 - 21,776,278 (-)NCBIGRCh37GRCh37hg19GRCh37
Build 36X21,634,012 - 21,686,151 (-)NCBINCBI36hg18NCBI36
Build 34X21,483,747 - 21,535,887NCBI
CeleraX25,845,385 - 25,897,515 (-)NCBI
Cytogenetic MapXp22.12NCBI
HuRefX19,465,725 - 19,517,905 (-)NCBIHuRef
CHM1_1X21,754,516 - 21,806,704 (-)NCBICHM1_1
JBrowse: View Region in Genome Browser (JBrowse)

Disease Annotations
Gene-Chemical Interaction Annotations
Gene Ontology Annotations
Phenotype Annotations
References - curated
References - uncurated


Comparative Map Data
Position Markers
miRNA Target Status


RNA-SEQ Expression


Nucleotide Sequences
Protein Sequences
Clinical Variants

Additional Information

External Database Links
Nomenclature History
More on SMPX
Alliance Gene
Ensembl Gene
JBrowse: hg19 hg38
HGNC Report
NCBI Genome Data Viewer

RGD Object Information
RGD ID: 736270
Created: 2004-02-06
Species: Homo sapiens
Last Modified: 2019-12-25
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.