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This gene encodes a protein phosphatase I-interacting protein that promotes the dephosphorylation of eukaryotic translation initiation factor 2A to regulate translation under conditions of cellular stress. The transcribed messenger RNA contains two upstream open reading frames (ORFs) that repress translation of the main protein coding ORF under normal conditions, while the protein coding ORF is expressed at high levels in response to stress. Continual translation of the mRNA under conditions of eukaryotic translation initiation factor 2A inactivation is thought to create a feedback loop for reactivation of the gene during recovery from stress. In addition, it has been shown that this protein plays a role in membrane traffic that is independent of translation and that it is required for exocytosis from erythroleukemia cells. Allelic variants of this gene are associated with microcephaly, short stature, and impaired glucose metabolism. [provided by RefSeq, Feb 2016]
PPP1R15B (Protein Phosphatase 1 Regulatory Subunit 15B) is a Protein Coding gene. Diseases associated with PPP1R15B include Microcephaly, Short Stature, And Impaired Glucose Metabolism 2 and Primary Microcephaly-Mild Intellectual Disability-Young-Onset Diabetes Syndrome. Gene Ontology (GO) annotations related to this gene include protein serine/threonine phosphatase activity. An important paralog of this gene is PPP1R15A.
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0005515 | protein binding | IPI | 15231748 |
GO:0019888 | protein phosphatase regulator activity | IEA,IBA | 21873635 |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0000164 | protein phosphatase type 1 complex | ISS | -- |
GO:0005737 | cytoplasm | IBA | 21873635 |
GO:0005783 | endoplasmic reticulum | IBA | 21873635 |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0001933 | negative regulation of protein phosphorylation | IMP | 26307080 |
GO:0006417 | regulation of translation | IEA | -- |
GO:0006979 | response to oxidative stress | IEA | -- |
GO:0006983 | ER overload response | IEA | -- |
GO:0032516 | positive regulation of phosphoprotein phosphatase activity | IBA | 21873635 |
This gene was present in the common ancestor of chordates.
Organism | Taxonomy | Gene | Similarity | Type | Details |
---|---|---|---|---|---|
chimpanzee (Pan troglodytes) |
Mammalia | PPP1R15B 33 32 |
|
OneToOne | |
cow (Bos Taurus) |
Mammalia | PPP1R15B 33 32 |
|
OneToOne | |
mouse (Mus musculus) |
Mammalia | Ppp1r15b 17 33 32 |
|
||
rat (Rattus norvegicus) |
Mammalia | Ppp1r15b 32 |
|
||
dog (Canis familiaris) |
Mammalia | PPP1R15B 33 32 |
|
OneToOne | |
platypus (Ornithorhynchus anatinus) |
Mammalia | PPP1R15B 33 |
|
OneToOne | |
oppossum (Monodelphis domestica) |
Mammalia | PPP1R15B 33 |
|
OneToOne | |
chicken (Gallus gallus) |
Aves | PPP1R15B 33 32 |
|
OneToOne | |
lizard (Anolis carolinensis) |
Reptilia | PPP1R15B 33 |
|
OneToOne | |
zebrafish (Danio rerio) |
Actinopterygii | PPP1R15B 33 |
|
OneToOne |
SNP ID | Clin | Chr 01 pos | Variation | AA Info | Type |
---|---|---|---|---|---|
rs759915160 | uncertain-significance, Microcephaly, short stature, and impaired glucose metabolism 2 | 204,411,387(-) | G/A/C | coding_sequence_variant, missense_variant | |
rs869025335 | pathogenic, Microcephaly, short stature, and impaired glucose metabolism 2, Microcephaly, short stature, and impaired glucose metabolism 2 (MSSGM2) [MIM:616817] | 204,406,262(-) | G/A/C | coding_sequence_variant, intron_variant, missense_variant | |
rs150224664 | uncertain-significance, not provided | 204,409,896(-) | C/T | coding_sequence_variant, missense_variant | |
rs1558216603 | uncertain-significance, not provided | 204,410,050(-) | ATCCTCAGCTTCCTCATCCCAATCCTCA/ATCCTCA | coding_sequence_variant, inframe_deletion | |
rs1558217471 | uncertain-significance, not provided | 204,411,020(-) | GA/TC | coding_sequence_variant, missense_variant |
Disorder | Aliases | PubMed IDs |
---|---|---|
microcephaly, short stature, and impaired glucose metabolism 2 |
|
|
primary microcephaly-mild intellectual disability-young-onset diabetes syndrome |
|
|
epiphyseal dysplasia, multiple, with early-onset diabetes mellitus |
|
|
microcephaly |
|
|