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UniProtKB - Q8HYB2 (GGTA1_LEMCA)
Protein
N-acetyllactosaminide alpha-1,3-galactosyltransferase
Gene
GGTA1
Organism
Lemur catta (Ring-tailed lemur)
Status
Functioni
Synthesizes the galactose-alpha(1,3)-galactose group by catalyzing the transfer of a galactose residue, with an alpha-1,3 linkage, on terminal lactosaminide (Gal-beta-1,4-GlcNAc-R) disaccharide borne by a glycoprotein or a glycolipid. Preferentially glycosylates proteins, can synthesize galactose-alpha(1,3)-galactose on glycoproteins but cannot synthesize the glycolipid called isogloboside 3 (iGb3) (By similarity).
By similarityCatalytic activityi
- a β-D-galactosyl-(1→4)-N-acetyl-β-D-glucosaminyl derivative + UDP-α-D-galactose = an α-D-galactosyl-(1→3)-β-D-galactosyl-(1→4)-N-acetyl-β-D-glucosaminyl derivative + H+ + UDPBy similarityEC:2.4.1.87By similarity
Cofactori
Mn2+By similarityNote: Binds 1 Mn2+ ion per subunit.By similarity
: protein glycosylation Pathwayi
This protein is involved in the pathway protein glycosylation, which is part of Protein modification.By similarityView all proteins of this organism that are known to be involved in the pathway protein glycosylation and in Protein modification.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 232 | ManganeseBy similarity | 1 | |
Metal bindingi | 234 | ManganeseBy similarity | 1 | |
Binding sitei | 266 | SubstrateBy similarity | 1 | |
Active sitei | 324 | NucleophileBy similarity | 1 |
GO - Molecular functioni
- metal ion binding Source: UniProtKB-KW
- N-acetyllactosaminide 3-alpha-galactosyltransferase activity Source: UniProtKB-EC
GO - Biological processi
- carbohydrate metabolic process Source: InterPro
- protein galactosylation at cell surface Source: UniProtKB
Keywordsi
Molecular function | Glycosyltransferase, Transferase |
Ligand | Manganese, Metal-binding |
Enzyme and pathway databases
BRENDAi | 2.4.1.87, 9186 |
UniPathwayi | UPA00378 |
Protein family/group databases
CAZyi | GT6, Glycosyltransferase Family 6 |
Names & Taxonomyi
Protein namesi | Recommended name: N-acetyllactosaminide alpha-1,3-galactosyltransferase (EC:2.4.1.87By similarity)Alternative name(s): UDP-galactose:beta-D-galactosyl-1,4-N-acetyl-D-glucosaminide alpha-1,3-galactosyltransferase Short name: Galactosyltransferase |
Gene namesi | Name:GGTA1 |
Organismi | Lemur catta (Ring-tailed lemur) |
Taxonomic identifieri | 9447 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Strepsirrhini › Lemuriformes › Lemuridae › Lemur |
Subcellular locationi
Golgi apparatus
- Golgi stack membrane By similarity; Single-pass type II membrane protein By similarity
Note: Membrane-bound form in trans cisternae of Golgi.By similarity
Golgi apparatus
- Golgi cisterna Source: UniProtKB
- Golgi cisterna membrane Source: UniProtKB-SubCell
Other locations
- integral component of membrane Source: UniProtKB-KW
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 6 | CytoplasmicSequence analysis | 6 | |
Transmembranei | 7 – 25 | Helical; Signal-anchor for type II membrane proteinSequence analysisAdd BLAST | 19 | |
Topological domaini | 26 – 375 | LumenalSequence analysisAdd BLAST | 350 |
Keywords - Cellular componenti
Golgi apparatus, MembranePTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000333702 | 1 – 375 | N-acetyllactosaminide alpha-1,3-galactosyltransferaseAdd BLAST | 375 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Glycosylationi | 300 | N-linked (GlcNAc...) asparagineSequence analysis | 1 |
Keywords - PTMi
GlycoproteinFamily & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 57 – 83 | DisorderedSequence analysisAdd BLAST | 27 | |
Regioni | 141 – 146 | Substrate bindingBy similarity | 6 | |
Regioni | 232 – 234 | Substrate bindingBy similarity | 3 | |
Regioni | 254 – 257 | Substrate bindingBy similarity | 4 | |
Regioni | 366 – 372 | Substrate bindingBy similarity | 7 |
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 63 – 83 | Basic and acidic residuesSequence analysisAdd BLAST | 21 |
Domaini
The conserved DXD motif is involved in cofactor binding. The manganese ion interacts with the beta-phosphate group of UDP and may also have a role in catalysis (By similarity).By similarity
Sequence similaritiesi
Belongs to the glycosyltransferase 6 family.Curated
Keywords - Domaini
Signal-anchor, Transmembrane, Transmembrane helixFamily and domain databases
Gene3Di | 3.90.550.10, 1 hit |
InterProi | View protein in InterPro IPR005076, Glyco_trans_6 IPR029044, Nucleotide-diphossugar_trans |
PANTHERi | PTHR10462, PTHR10462, 1 hit |
Pfami | View protein in Pfam PF03414, Glyco_transf_6, 1 hit |
SUPFAMi | SSF53448, SSF53448, 1 hit |
i Sequence
Sequence statusi: Complete.
Q8HYB2-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MNVKGKVILS MLVVSTVMVV FWEYINSPEG SFLWIYHSKN PEVGDSSTQK
60 70 80 90 100
GWWFPSWFHD GTPSNQEEED IDKEKRREKE QRKEDDEEEL QLWDWFNPKK
110 120 130 140 150
RPEVVTVTSW KAPVVWEGTY NKAILENYYA KQKITVGLTV FAVGRYIEHY
160 170 180 190 200
LEEFITSANR YFMVGHKVIF YIMLDDISKM PLIELGPLRS FKVFEIKPEK
210 220 230 240 250
RWQDISMMRM KTIGEHILAH IQHEVDFLFC MDVDQVFQDN FGVETLGQSV
260 270 280 290 300
AQLQAWWYKA DPDEFTYERR KESAAYIPFG EGDFYYHAAI FGGTPIQVLN
310 320 330 340 350
ITRECFKGIL QDKKNDIEAE WHDESHLNKY FLLNKPSKIL SPEYCWDFHI
360 370
GLPSDIKIVK ISWQTKHYNL VRNNV
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AY126667 mRNA Translation: AAM95595.2 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AY126667 mRNA Translation: AAM95595.2 |
3D structure databases
SMRi | Q8HYB2 |
ModBasei | Search... |
Protein family/group databases
CAZyi | GT6, Glycosyltransferase Family 6 |
Enzyme and pathway databases
UniPathwayi | UPA00378 |
BRENDAi | 2.4.1.87, 9186 |
Family and domain databases
Gene3Di | 3.90.550.10, 1 hit |
InterProi | View protein in InterPro IPR005076, Glyco_trans_6 IPR029044, Nucleotide-diphossugar_trans |
PANTHERi | PTHR10462, PTHR10462, 1 hit |
Pfami | View protein in Pfam PF03414, Glyco_transf_6, 1 hit |
SUPFAMi | SSF53448, SSF53448, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | GGTA1_LEMCA | |
Accessioni | Q8HYB2Primary (citable) accession number: Q8HYB2 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | May 20, 2008 |
Last sequence update: | January 23, 2007 | |
Last modified: | June 2, 2021 | |
This is version 65 of the entry and version 2 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Documents
- PATHWAY comments
Index of metabolic and biosynthesis pathways - SIMILARITY comments
Index of protein domains and families