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ST8SIA2
HPA
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  • ST8SIA2
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

ST8SIA2
Synonyms HsT19690, SIAT8B, ST8SIA-II, STX
Gene descriptioni

Full gene name according to HGNC.

ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 2
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Secreted
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 15
Cytoband q26.1
Chromosome location (bp) 92393881 - 92468728
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

3
Ensembl ENSG00000140557 (version 109)
Entrez gene 8128
HGNC HGNC:10870
UniProt Q92186 (UniProt - Evidence at transcript level)
neXtProt NX_Q92186
GeneCards ST8SIA2
Antibodypedia ST8SIA2 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Catalyzes the transfer of a sialic acid from a CMP-linked sialic acid donor onto a terminal alpha-2,3-, alpha-2,6-, or alpha-2,8-linked sialic acid of an N-linked glycan acceptor through alpha-2,8-linkages (Probable) 1, 2, 3, 4. Therefore, participates in polysialic acid synthesis on various sialylated N-acetyllactosaminyl oligosaccharides (alpha-2,3-, alpha-2,6-, or alpha-2,8-linked sialic acid), including NCAM1, NCAM1 N-glycans, FETUB N-glycans, and to a lesser extent sialylparagloboside (SPG) and AHSG, which does not require the initial addition of an alpha 2,8-sialic acid (Probable) 5. However, does not exhibit sialic acid-polymerase activity (By similarity). Catalyzes polysialic acid synthesis in the hippocampal on NCAM1 and supports neurite outgrowth 6. ST8SIA2-mediated polysialylation influences on oligodendrocyte differentiation and may promote the integrity of myelin and axons (By similarity).... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Glycosyltransferase, Transferase
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Nucleotide-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

The protein encoded by this gene is a type II membrane protein that is thought to catalyze the transfer of sialic acid from CMP-sialic acid to N-linked oligosaccharides and glycoproteins. The encoded protein may be found in the Golgi apparatus and may be involved in the production of polysialic acid, a modulator of the adhesive properties of neural cell adhesion molecule (NCAM1). This protein is a member of glycosyltransferase family 29. [provided by RefSeq, Jul 2008]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
ST8SIA2-201
ENSP00000268164
ENST00000268164
Q92186
[Direct mapping] Alpha-2,8-sialyltransferase 8B
Show all
B2R9U8
[Target identity:100%; Query identity:100%] Alpha-2,8-sialyltransferase 8B 1; ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 2; cDNA, FLJ94563, Homo sapiens sialyltransferase 8B (alpha-2, 8-sialyltransferase)(SIAT8B), mRNA
Show all
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   DeepSig predicted secreted proteins
Mapped to neXtProt
   neXtProt - Evidence at protein level
   DeepTMHMM predicted membrane proteins
Show all
GO:0000139 [Golgi membrane]
GO:0001574 [ganglioside biosynthetic process]
GO:0003828 [alpha-N-acetylneuraminate alpha-2,8-sialyltransferase activity]
GO:0005769 [early endosome]
GO:0005794 [Golgi apparatus]
GO:0005886 [plasma membrane]
GO:0005975 [carbohydrate metabolic process]
GO:0006486 [protein glycosylation]
GO:0006491 [N-glycan processing]
GO:0007399 [nervous system development]
GO:0008373 [sialyltransferase activity]
GO:0009311 [oligosaccharide metabolic process]
GO:0016020 [membrane]
GO:0016740 [transferase activity]
GO:0016757 [glycosyltransferase activity]
GO:0030182 [neuron differentiation]
GO:0033691 [sialic acid binding]
GO:0036211 [protein modification process]
GO:0042220 [response to cocaine]
GO:0048471 [perinuclear region of cytoplasm]
GO:0051965 [positive regulation of synapse assembly]
GO:0055037 [recycling endosome]
GO:0097503 [sialylation]
GO:1901216 [positive regulation of neuron death]
GO:1990138 [neuron projection extension]
Show all
375 aa
42.4 kDa
Yes 0
ST8SIA2-202
ENSP00000437382
ENST00000539113
C6G488
[Direct mapping] Alpha-2,8-sialyltransferase 8B
Show all
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   Phobius predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Show all
GO:0005794 [Golgi apparatus]
GO:0006486 [protein glycosylation]
GO:0008373 [sialyltransferase activity]
GO:0016020 [membrane]
GO:0016740 [transferase activity]
GO:0016757 [glycosyltransferase activity]
GO:0097503 [sialylation]
Show all
354 aa
40.2 kDa
Yes 0
ST8SIA2-203
ENSP00000450851
ENST00000555434
G3V2T1
[Direct mapping] Alpha-2,8-sialyltransferase 8B
Show all
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Show all
GO:0005794 [Golgi apparatus]
GO:0006486 [protein glycosylation]
GO:0008373 [sialyltransferase activity]
GO:0016020 [membrane]
GO:0016757 [glycosyltransferase activity]
GO:0097503 [sialylation]
Show all
332 aa
37.7 kDa
Yes 0

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