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Protein

CMP-N-acetylneuraminate-beta-galactosamide-alpha-2,3-sialyltransferase 1

Gene

ST3GAL1

Organism
Pan troglodytes (Chimpanzee)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at transcript leveli

Functioni

It may be responsible for the synthesis of the sequence NeuAc-alpha-2,3-Gal-beta-1,3-GalNAc- found on sugar chains O-linked to Thr or Ser and also as a terminal sequence on certain gangliosides. SIAT4A and SIAT4B sialylate the same acceptor substrates but exhibit different Km values (By similarity).By similarity

Catalytic activityi

CMP-N-acetylneuraminate + beta-D-galactosyl-1,3-N-acetyl-alpha-D-galactosaminyl-R = CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-alpha-D-galactosaminyl-R.

Pathwayi: protein glycosylation

This protein is involved in the pathway protein glycosylation, which is part of Protein modification.
View all proteins of this organism that are known to be involved in the pathway protein glycosylation and in Protein modification.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei105SubstrateBy similarity1
Binding sitei147SubstrateBy similarity1
Binding sitei170SubstrateBy similarity1
Binding sitei230SubstrateBy similarity1
Binding sitei266SubstrateBy similarity1
Binding sitei270Substrate; via amide nitrogenBy similarity1
Binding sitei290Substrate; via amide nitrogenBy similarity1
Binding sitei299SubstrateBy similarity1
Binding sitei316SubstrateBy similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Enzyme and pathway databases

UniPathwayiUPA00378.

Protein family/group databases

CAZyiGT29. Glycosyltransferase Family 29.

Names & Taxonomyi

Protein namesi
Recommended name:
CMP-N-acetylneuraminate-beta-galactosamide-alpha-2,3-sialyltransferase 1 (EC:2.4.99.4)
Short name:
Alpha 2,3-ST 1
Short name:
Beta-galactoside alpha-2,3-sialyltransferase 1
Alternative name(s):
Gal-NAc6S
Gal-beta-1,3-GalNAc-alpha-2,3-sialyltransferase
SIATFL
ST3Gal I
Short name:
ST3GalI
ST3GalA.1
ST3O
Sialyltransferase 4A
Short name:
SIAT4-A
Gene namesi
Name:ST3GAL1
Synonyms:SIAT4, SIAT4A
OrganismiPan troglodytes (Chimpanzee)
Taxonomic identifieri9598 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaePan
Proteomesi
  • UP000002277 Componenti: Unplaced

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 13CytoplasmicSequence analysisAdd BLAST13
Transmembranei14 – 34Helical; Signal-anchor for type II membrane proteinSequence analysisAdd BLAST21
Topological domaini35 – 340LumenalSequence analysisAdd BLAST306

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Golgi apparatus, Membrane, Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001492551 – 340CMP-N-acetylneuraminate-beta-galactosamide-alpha-2,3-sialyltransferase 1Add BLAST340

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi59 ↔ 64By similarity
Disulfide bondi61 ↔ 139By similarity
Glycosylationi79N-linked (GlcNAc...)Sequence analysis1
Glycosylationi114N-linked (GlcNAc...)Sequence analysis1
Disulfide bondi142 ↔ 281By similarity
Glycosylationi201N-linked (GlcNAc...)Sequence analysis1
Glycosylationi323N-linked (GlcNAc...)Sequence analysis1

Post-translational modificationi

The soluble form derives from the membrane form by proteolytic processing.By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ6KB59.

Interactioni

Protein-protein interaction databases

STRINGi9598.ENSPTRP00000054506.

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyltransferase 29 family.Curated

Keywords - Domaini

Signal-anchor, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiKOG2692. Eukaryota.
ENOG410XT8P. LUCA.
HOGENOMiHOG000126811.
HOVERGENiHBG054227.
InParanoidiQ6KB59.
KOiK00780.

Family and domain databases

InterProiIPR001675. Glyco_trans_29.
IPR012163. Sialyl_trans.
[Graphical view]
PfamiPF00777. Glyco_transf_29. 1 hit.
[Graphical view]
PIRSFiPIRSF005557. Sialyl_trans. 1 hit.

Sequencei

Sequence statusi: Complete.

Q6KB59-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MVTLRKRTLK VLTFLVLFIF LTSFFLNYSH TMVATTWFPK QMVLELSENL
60 70 80 90 100
KRLIKHRPCT CTHCIGQRKL SAWFDERFNQ TVQPLLTAQN ALLEDDTYRW
110 120 130 140 150
WLRLQREKKP NNLNDTIKEL FRVVPGNVDP MLEKRSVGCR RCAVVGNSGN
160 170 180 190 200
LRESSYGPEI DSHDFVLRMN KAPTAGFEAD VGTKTTHHLV YPESFRELGD
210 220 230 240 250
NVSMILVPFK TIDLEWVVSA ITTGTISHTY TPVLVKIRVK QDKILIYHPA
260 270 280 290 300
FIKYVFDNWL QGHGRYPSTG ILSVIFSMHV CDEVDLYGFG ADSKGNWHHY
310 320 330 340
WENNPSAGAF RKTGVHDADF ESNVTATLAA INKIRIFKGR
Length:340
Mass (Da):39,059
Last modified:July 5, 2004 - v1
Checksum:iE225885CC83EB501
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ744803 mRNA. Translation: CAG32839.1.
RefSeqiNP_001009037.1. NM_001009037.1.
UniGeneiPtr.6414.

Genome annotation databases

GeneIDi450114.
KEGGiptr:450114.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ744803 mRNA. Translation: CAG32839.1.
RefSeqiNP_001009037.1. NM_001009037.1.
UniGeneiPtr.6414.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9598.ENSPTRP00000054506.

Protein family/group databases

CAZyiGT29. Glycosyltransferase Family 29.

Proteomic databases

PaxDbiQ6KB59.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi450114.
KEGGiptr:450114.

Organism-specific databases

CTDi6482.

Phylogenomic databases

eggNOGiKOG2692. Eukaryota.
ENOG410XT8P. LUCA.
HOGENOMiHOG000126811.
HOVERGENiHBG054227.
InParanoidiQ6KB59.
KOiK00780.

Enzyme and pathway databases

UniPathwayiUPA00378.

Family and domain databases

InterProiIPR001675. Glyco_trans_29.
IPR012163. Sialyl_trans.
[Graphical view]
PfamiPF00777. Glyco_transf_29. 1 hit.
[Graphical view]
PIRSFiPIRSF005557. Sialyl_trans. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiSIA4A_PANTR
AccessioniPrimary (citable) accession number: Q6KB59
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 15, 2005
Last sequence update: July 5, 2004
Last modified: June 8, 2016
This is version 75 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.