SMIM20
Identifiers
Aliases	SMIM20, C4orf52, small integral membrane protein 20, MITRAC7, PNX
External IDs	OMIM: 617465 MGI: 1913528 HomoloGene: 82612 GeneCards: SMIM20
Gene location (Human) Chr. Chromosome 4 (human)[1] Band 4p15.2 Start 25,861,830 bp[1] End 25,929,813 bp[1]
Gene location (Mouse) Chr. Chromosome 5 (mouse)[2] Band 5|5 C1 Start 53,424,425 bp[2] End 53,435,882 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in deltoid muscle muscle of leg gastrocnemius muscle tibialis anterior muscle Achilles tendon quadriceps femoris muscle vastus lateralis muscle biceps brachii body of pancreas duodenum Top expressed in soleus muscle otolith organ knee joint utricle gastrocnemius muscle masseter muscle quadriceps femoris muscle proximal tubule tibialis anterior muscle myocardium of ventricle More reference expression data BioGPS n/a
Gene ontology Molecular function protein binding Cellular component membrane integral component of membrane mitochondrion mitochondrial inner membrane Biological process mitochondrial cytochrome c oxidase assembly Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 389203 66278 Ensembl ENSG00000250317 ENSMUSG00000061461 UniProt Q8N5G0 D3Z7Q2 RefSeq (mRNA) NM_001145432 NM_001394130 NM_001145433 RefSeq (protein) NP_001138904 NP_001138905 Location (UCSC) Chr 4: 25.86 – 25.93 Mb Chr 5: 53.42 – 53.44 Mb PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Small integral membrane protein (SMIM) 20 is a protein that in humans is encoded by the SMIM20 gene.^[5] SMIM20 acts as a prohormone to the peptide hormone phoenixin which was discovered for the first time in 2013 in rodent sensory ganglia.^[6]

In the study of the evolution of nervous systems, SMIM20 together with NUCB2 have been found to have deep homology across all lineages that preceded creatures with central nervous systems, bilaterians, cnidarians, ctenophores, and sponges as well as in choanoflagellates.^[7][8]

References

Further reading