Reviewed, UniProtKB/Swiss-Prot Q5NVN3 (B4GT3_PONAB)

Names and origin

Protein names

Recommended name:
    Beta-1,4-galactosyltransferase 3
      Short name=Beta-1,4-GalTase 3
      Short name=Beta4Gal-T3
      Short name=b4Gal-T3
    EC=2.4.1.-
Alternative name(s):
    UDP-galactose:beta-N-acetylglucosamine beta-1,4-galactosyltransferase 3
    UDP-Gal:beta-GlcNAc beta-1,4-galactosyltransferase 3
Including the following 3 domains:
    1- Recommended name:
            N-acetyllactosamine synthase
              EC=2.4.1.90
        Alternative name(s):
            Nal synthetase
    2- Recommended name:
            Beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase
              EC=2.4.1.38
    3- Recommended name:
            Beta-N-acetylglucosaminyl-glycolipid beta-1,4-galactosyltransferase
              EC=2.4.1.-

Gene names

Name:

B4GALT3

Organism

Pongo abelii (Sumatran orangutan)

Taxonomic identifier

9601 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Pongo

Protein attributes

Sequence length	393 AA.
Sequence status	Complete.
Protein existence	Evidence at transcript level.

General annotation (Comments)

Function	Responsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids By similarity.
Catalytic activity	UDP-galactose + N-acetyl-beta-D-glucosaminylglycopeptide = UDP + beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminylglycopeptide. UDP-galactose + N-acetyl-D-glucosamine = UDP + N-acetyllactosamine.
Cofactor	Manganese By similarity.
Pathway	Protein modification; protein glycosylation.
Subcellular location	Golgi apparatus › Golgi stack membrane; Single-pass type II membrane protein By similarity. Note: Trans cisternae of Golgi stack By similarity.
Sequence similarities	Belongs to the glycosyltransferase 7 family.

Ontologies

Keywords
Cellular component	Golgi apparatus Membrane
Domain	Signal-anchor Transmembrane
Ligand	Manganese Metal-binding
Molecular function	Glycosyltransferase Transferase
PTM	Disulfide bond Glycoprotein
Gene Ontology (GO)
Biological process	carbohydrate metabolic process Inferred from electronic annotation. Source: InterPro
Cellular component	Golgi apparatus Inferred from electronic annotation. Source: UniProtKB-KW integral to membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	N-acetyllactosamine synthase activity Inferred from electronic annotation. Source: EC beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity Inferred from electronic annotation. Source: EC manganese ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 393	393	Beta-1,4-galactosyltransferase 3		PRO_0000080539
Regions
	Topological domain	1 – 10	10	Cytoplasmic Potential
	Transmembrane	11 – 31	21	Signal-anchor for type II membrane protein Potential
	Topological domain	32 – 393	362	Lumenal Potential
Sites
	Metal binding	197	1	Manganese By similarity
	Metal binding	291	1	Manganese By similarity
Amino acid modifications
	Glycosylation	57	1	N-linked (GlcNAc...) Potential
	Glycosylation	166	1	N-linked (GlcNAc...) Potential
	Glycosylation	337	1	N-linked (GlcNAc...) Potential
	Glycosylation	385	1	N-linked (GlcNAc...) Potential
	Disulfide bond	77 ↔ 119		By similarity
	Disulfide bond	190 ↔ 209		By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q5NVN3-1 [UniParc]. Last modified January 4, 2005. Version 1. Checksum: CA0BF9562D32D1F4	FASTA	393	43,922
	10 20 30 40 50 60 MLRRLLERPC TLALLVGSQL AVMMYLSLGG FRSLSALFGR DQGPTFDYSH PRDVYSNLSH 70 80 90 100 110 120 LPGAPGGPPA PQGLPYCPER SPLLVGPVSV SFSPVPSLAE IVERNPRVEP GGRYRPAGCE 130 140 150 160 170 180 PRSRTAIIVP HRAREHHLRL LLYHLHPFLQ RQQLAYGIYV IHQAGNGTFN RAKLLNVGVR 190 200 210 220 230 240 EALRDEEWDC LFLHDVDLLP ENDHNLYVCD PRGPRHVAVA MNKFGYSLPY PQYFGGVSAL 250 260 270 280 290 300 TPDQYLKMNG FPNEYWGWGG EDDDIATRVR LAGMKISRPP TSVGHYKMVK HRGDKGNEEN 310 320 330 340 350 360 PHRFDLLVRT QNSWTQDGMN SLTYQLLARE LGPLYTNITA DIGTDPRGPR APSGPRYPPG 370 380 390 SSQAFRQEML QRRPPARPGP PPTANHTALR GSH

References

[1]	The German cDNA consortium Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Brain cortex.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CR925982 mRNA. Translation: CAI29630.1.
RefSeq	NP_001127681.1.
UniGene	Pab.671
3D structure databases
SMR	Q5NVN3. Positions 74-344.
ModBase	Search...
Protein family/group databases
CAZy	GT7. Glycosyltransferase Family 7.
Genome annotation databases
GeneID	100174763.
Organism-specific databases
CTD	100174763.
Phylogenomic databases
HOVERGEN	Q5NVN3.
InParanoid	Q5NVN3.
Enzyme and pathway databases
BRENDA	2.4.1.38. 269192. 2.4.1.90. 269192.
Family and domain databases
InterPro	IPR003859. Galactosyl_T_2. [Graphical view]
PANTHER	PTHR19300. Galactosyl_T_2. 1 hit.
ProtoNet	Search...

Entry information

Entry name

B4GT3_PONAB

Accession

Primary (citable) accession number: Q5NVN3

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 21, 2005
Last sequence update:	January 4, 2005
Last modified:	February 9, 2010
This is version 35 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)