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GM2 and GD2 gangliosides are sialic acid-containing glycosphingolipids. GalNAc-T is the enzyme involved in the biosynthesis of G(M2) and G(D2) glycosphingolipids. GalNAc-T catalyzes the transfer of GalNAc into G(M3) and G(D3) by a beta-1,4 linkage, resulting in the synthesis of G(M2) and G(D2), respectively. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2013]
B4GALNT1 (Beta-1,4-N-Acetyl-Galactosaminyltransferase 1) is a Protein Coding gene. Diseases associated with B4GALNT1 include Spastic Paraplegia 26, Autosomal Recessive and Spastic Paraplegia 26. Among its related pathways are Glycosphingolipid biosynthesis - ganglio series and Metabolism. Gene Ontology (GO) annotations related to this gene include transferase activity and acetylgalactosaminyltransferase activity. An important paralog of this gene is B4GALNT2.
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0003947 | (N-acetylneuraminyl)-galactosylglucosylceramide N-acetylgalactosaminyltransferase activity | TAS,IMP | 1601877 |
GO:0008376 | acetylgalactosaminyltransferase activity | IEA,IBA | 21873635 |
GO:0016740 | transferase activity | IEA | -- |
GO:0016757 | transferase activity, transferring glycosyl groups | IEA | -- |
GO:0016758 | transferase activity, transferring hexosyl groups | IEA | -- |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0000139 | Golgi membrane | TAS | -- |
GO:0005794 | Golgi apparatus | ISS | -- |
GO:0005886 | plasma membrane | IEA | -- |
GO:0016020 | membrane | TAS | 1601877 |
GO:0016021 | integral component of membrane | IEA | -- |
SuperPathway | Contained pathways | ||
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1 | Metabolism |
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2 | Glycosphingolipid biosynthesis - ganglio series | ||
3 | Sphingolipid metabolism |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0001574 | ganglioside biosynthetic process | IMP | 1601877 |
GO:0005975 | carbohydrate metabolic process | TAS | 1601877 |
GO:0006629 | lipid metabolic process | IEA | -- |
GO:0006665 | sphingolipid metabolic process | IEA | -- |
GO:0006687 | glycosphingolipid metabolic process | TAS | -- |
Name | Status | Disease Links | Group | Role | Mechanism of Action | Clinical Trials |
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Uridine 5'-diphosphate | Experimental | Pharma | 0 |
Name | Synonyms | Role | CAS Number | PubChem IDs | PubMed IDs | |
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Ganglioside GA2 (d18:1/12:0) |
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Ganglioside GA2 (d18:1/16:0) |
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Ganglioside GA2 (d18:1/18:0) |
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Ganglioside GA2 (d18:1/20:0) |
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Ganglioside GA2 (d18:1/22:0) |
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ExUns: | 1a | · | 1b | · | 1c | ^ | 2a | · | 2b | · | 2c | ^ | 3 | ^ | 4 | ^ | 5a | · | 5b | · | 5c | ^ | 6a | · | 6b | ^ | 7 | ^ | 8 | ^ | 9 | ^ | 10a | · | 10b | ^ | 11 | ^ | 12 | ^ | 13 | ^ | 14a | · | 14b | · | 14c | ^ | 15a | · | 15b | · |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SP1: | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||
SP2: | - | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||
SP3: | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||
SP4: | - | |||||||||||||||||||||||||||||||||||||||||||||||||||
SP5: | - | |||||||||||||||||||||||||||||||||||||||||||||||||||
SP6: | - | |||||||||||||||||||||||||||||||||||||||||||||||||||
SP7: | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||
SP8: | - | - | ||||||||||||||||||||||||||||||||||||||||||||||||||
SP9: | ||||||||||||||||||||||||||||||||||||||||||||||||||||
SP10: | ||||||||||||||||||||||||||||||||||||||||||||||||||||
SP11: | ||||||||||||||||||||||||||||||||||||||||||||||||||||
SP12: |
ExUns: | 15c |
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SP1: | |
SP2: | |
SP3: | |
SP4: | |
SP5: | |
SP6: | |
SP7: | |
SP8: | |
SP9: | |
SP10: | |
SP11: | |
SP12: |
This gene was present in the common ancestor of chordates.
Organism | Taxonomy | Gene | Similarity | Type | Details |
---|---|---|---|---|---|
Chimpanzee (Pan troglodytes) |
Mammalia | B4GALNT1 30 31 |
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OneToOne | |
Cow (Bos Taurus) |
Mammalia | GALGT 31 |
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OneToOne | |
B4GALNT1 30 |
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Dog (Canis familiaris) |
Mammalia | B4GALNT1 30 31 |
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OneToOne | |
Mouse (Mus musculus) |
Mammalia | B4galnt1 30 17 31 |
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OneToOne | |
Rat (Rattus norvegicus) |
Mammalia | B4galnt1 30 |
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Oppossum (Monodelphis domestica) |
Mammalia | B4GALNT1 31 |
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OneToOne | |
Lizard (Anolis carolinensis) |
Reptilia | B4GALNT1 31 |
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OneToOne | |
Tropical Clawed Frog (Silurana tropicalis) |
Amphibia | b4galnt1 30 |
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African clawed frog (Xenopus laevis) |
Amphibia | MGC53523 30 |
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Zebrafish (Danio rerio) |
Actinopterygii | LOC793635 30 |
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B4GALNT1 (2 of 2) 31 |
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OneToMany | |||
b4galnt1a 31 |
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OneToMany |
SNP ID | Clinical significance and condition | Chr 12 pos | Variation | AA Info | Type |
---|---|---|---|---|---|
639794 | Uncertain Significance: Spastic paraplegia | 57,630,495(-) | C/T | MISSENSE_VARIANT | |
645775 | Uncertain Significance: Spastic paraplegia | 57,631,323(-) | C/T | MISSENSE_VARIANT,INTRON_VARIANT | |
648688 | Uncertain Significance: Spastic paraplegia | 57,627,624(-) | G/A | MISSENSE_VARIANT | |
652287 | Uncertain Significance: Spastic paraplegia | 57,629,059(-) | A/G | MISSENSE_VARIANT | |
653998 | Pathogenic: Spastic paraplegia | 57,631,291(-) | G/A | NONSENSE,INTRON_VARIANT |
Disorder | Aliases | PubMed IDs |
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spastic paraplegia 26, autosomal recessive |
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spastic paraplegia 26 |
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paraplegia |
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complex hereditary spastic paraplegia |
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hereditary spastic paraplegia |
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