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Protein

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

Gene

ST3GAL1

Organism
Gallus gallus (Chicken)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at transcript leveli

Functioni

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

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.By similarity

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 sitei107SubstrateBy similarity1
Binding sitei149SubstrateBy similarity1
Binding sitei172SubstrateBy similarity1
Binding sitei232SubstrateBy similarity1
Binding sitei268SubstrateBy similarity1
Binding sitei272Substrate; via amide nitrogenBy similarity1
Binding sitei292Substrate; via amide nitrogenBy similarity1
Binding sitei301SubstrateBy similarity1
Binding sitei318SubstrateBy similarity1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionGlycosyltransferase, Transferase

Enzyme and pathway databases

ReactomeiR-GGA-2022854. Keratan sulfate biosynthesis.
R-GGA-4085001. Sialic acid metabolism.
R-GGA-977068. Termination of O-glycan biosynthesis.
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:2.4.99.4By similarity)
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
ST3Gal I
Short name:
ST3GalI
ST3GalA.1
ST3O
Sialyltransferase 4A
Short name:
SIAT4-A
Gene namesi
Name:ST3GAL1
Synonyms:SIAT4A
OrganismiGallus gallus (Chicken)
Taxonomic identifieri9031 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaDinosauriaSaurischiaTheropodaCoelurosauriaAvesNeognathaeGalloanseraeGalliformesPhasianidaePhasianinaeGallus
Proteomesi
  • UP000000539 Componenti: Chromosome 2

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 10CytoplasmicSequence analysis10
Transmembranei11 – 28Helical; Signal-anchor for type II membrane proteinSequence analysisAdd BLAST18
Topological domaini29 – 342LumenalSequence analysisAdd BLAST314

Keywords - Cellular componenti

Golgi apparatus, Membrane, Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001492571 – 342CMP-N-acetylneuraminate-beta-galactosamide-alpha-2,3-sialyltransferase 1Add BLAST342

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi61 ↔ 66By similarity
Disulfide bondi63 ↔ 141By similarity
Glycosylationi81N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi116N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi144 ↔ 283By similarity
Glycosylationi203N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi229N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi250N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi306N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi325N-linked (GlcNAc...) asparagineSequence analysis1

Post-translational modificationi

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

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ11200.

Expressioni

Developmental stagei

Expressed in early embryonic stages.

Gene expression databases

BgeeiENSGALG00000016210.

Interactioni

Protein-protein interaction databases

STRINGi9031.ENSGALP00000026083.

Structurei

3D structure databases

ProteinModelPortaliQ11200.
SMRiQ11200.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyltransferase 29 family.Curated

Keywords - Domaini

Signal-anchor, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiKOG2692. Eukaryota.
ENOG410XT8P. LUCA.
GeneTreeiENSGT00760000119095.
HOGENOMiHOG000126811.
HOVERGENiHBG054227.
InParanoidiQ11200.
KOiK00780.
OMAiTWFPKQM.
OrthoDBiEOG091G08DE.
PhylomeDBiQ11200.
TreeFamiTF354325.

Family and domain databases

InterProiView protein in InterPro
IPR001675. Glyco_trans_29.
IPR012163. Sialyl_trans.
PfamiView protein in Pfam
PF00777. Glyco_transf_29. 1 hit.
PIRSFiPIRSF005557. Sialyl_trans. 1 hit.

Sequencei

Sequence statusi: Complete.

Q11200-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MVTVRKRNVK VFTFAFVLIT VTSFLLNYKH QVTMTTWDPK HIISQFSEQV
60 70 80 90 100
RKLIKFPRRP CSCSTCISEL GHSLWFDQRF NSTMQPFLTS QNALIPEDSY
110 120 130 140 150
RWWLKLQGEK SPKNINDTLK ELFGIIPGDR DPLQERGTFS CRRCAVVGNS
160 170 180 190 200
GNLRQSQYGQ DIDSHDFVLR MNRAPTIGYE SDVGSKTTHH FVYPESYKEL
210 220 230 240 250
AENVSMIVIP FKTLDLRWIV TALTTGTINF TYVPVPRKIK VRKEKVLIYN
260 270 280 290 300
PSFIKYVYEN WLQNHGRYPS TGLLSVIFAL HVCDEVNVYG FGADSKGHWH
310 320 330 340
HYWENNASAG AFRQTGVHDG DFEFNVTLTL ASIEKIKFFK GR
Length:342
Mass (Da):39,540
Last modified:October 1, 1996 - v1
Checksum:i59E657652F4FE949
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X80503 mRNA. Translation: CAA56666.1.
PIRiS55675.
RefSeqiNP_990548.1. NM_205217.1.
XP_015138567.1. XM_015283081.1.
UniGeneiGga.3672.

Genome annotation databases

EnsembliENSGALT00000049825; ENSGALP00000051730; ENSGALG00000037773.
GeneIDi396140.
KEGGigga:396140.

Similar proteinsi

Entry informationi

Entry nameiSIA4A_CHICK
AccessioniPrimary (citable) accession number: Q11200
Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: September 27, 2017
This is version 117 of the entry and version 1 of the sequence. See 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