Reviewed, UniProtKB/Swiss-Prot Q812F8 (MGT4B_MOUSE)

Names and origin

Protein names

Recommended name:
    Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase B
    EC=2.4.1.145
Alternative name(s):
    UDP-N-acetylglucosamine: alpha-1,3-D-mannoside beta-1,4-N-acetylglucosaminyltransferase IVb
    N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase IVb
      Short name=N-acetylglucosaminyltransferase IVb
      Short name=GlcNAc-T IVb
      Short name=GnT-IVb

Gene names

Name:

Mgat4b

Organism

Mus musculus (Mouse)

Taxonomic identifier

10090 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus

Protein attributes

Sequence length	548 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at transcript level.

General annotation (Comments)

Function	Glycosyltransferase that participates in the transfer of N-acetylglucosamine (GlcNAc) to the core mannose residues of N-linked glycans. Catalyzes the formation of the GlcNAcbeta1-4 branch on the GlcNAcbeta1-2Manalpha1-3 arm of the core structure of N-linked glycans. Essential for the production of tri- and tetra-antennary N-linked sugar chains. Has lower affinities for donors or acceptors than MGAT4A, suggesting that, under physiological conditions, it is not the main contributor in N-glycan biosynthesis By similarity.
Catalytic activity	UDP-N-acetyl-D-glucosamine + 3-(2-(N-acetyl-beta-D-glucosaminyl)-alpha-D-mannosyl)-beta-D-mannosyl-R = UDP + 3-(2,4-bis(N-acetyl-beta-D-glucosaminyl)-alpha-D-mannosyl)-beta-D-mannosyl-R.
Cofactor	Divalent metal cations By similarity.
Pathway	Protein modification; protein glycosylation.
Subcellular location	Golgi apparatus membrane; Single-pass type II membrane protein By similarity.
Sequence similarities	Belongs to the glycosyltransferase 54 family.

Ontologies

Keywords
Cellular component	Golgi apparatus Membrane
Domain	Coiled coil Signal-anchor Transmembrane
Ligand	Metal-binding
Molecular function	Glycosyltransferase Transferase
PTM	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	alpha-1,3-mannosylglycoprotein 4-beta-N-acetylglucosaminyltransferase activity Inferred from electronic annotation. Source: EC metal 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 – 548	548	Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase B		PRO_0000288594
Regions
	Topological domain	1 – 7	7	Cytoplasmic Potential
	Transmembrane	8 – 28	21	Signal-anchor for type II membrane protein Potential
	Topological domain	29 – 548	520	Lumenal Potential
	Coiled coil	36 – 83	48	Potential
Amino acid modifications
	Glycosylation	87	1	N-linked (GlcNAc...) Potential
	Glycosylation	103	1	N-linked (GlcNAc...) Potential
Experimental info
	Sequence conflict	395 – 396	2	EH → SY in BAC55019. Ref.1

Sequences

	Sequence		Length	Mass (Da)
	Q812F8-1 [UniParc]. Last modified June 1, 2003. Version 1. Checksum: A66F88F4A05FBF27	FASTA	548	63,302
	10 20 30 40 50 60 MRLRNGTFLT LLLFCLCAFL SLSWYAALSG QKGDVVDIYQ REFLALRDRL HAAEQESLKR 70 80 90 100 110 120 SKELNLVLEE IKRAVSERQA LRDGEGNRTW GRLTEDPRLK PWNVSHRHVL HLPTVFHHLP 130 140 150 160 170 180 HLLAKESSLQ PAVRVGQGRT GVSVVMGIPS VRREVHSYLT DTLHSLISEL SPQEKEDSVI 190 200 210 220 230 240 VVLIAETDPQ YTSAVTENIK ALFPTEIHSG LLEVISPSPH FYPDFSRLRE SFGDPKERVR 250 260 270 280 290 300 WRTKQNLDYC FLMMYAQSKG IYYVQLEDDI VAKPNYLSTM KNFALQQPSE DWMILEFSQL 310 320 330 340 350 360 GFIGKMFKSL DLSLIVEFIL MFYRDKPIDW LLDHILWVKV CNPEKDAKHC DRQKANLRIR 370 380 390 400 410 420 FKPSLFQHVG THSSLAGKIQ KLKDKDFGKH ALRKEHVNPP AEVSTSLKTY QHFTLEKAYL 430 440 450 460 470 480 REDFFWAFTP AAGDFIRFRF FQPLRLERFF FRSGNIEHPE DKLFNTSVEV LPFDNPQSEK 490 500 510 520 530 540 EALQEGRSAT LRYPRSPDGY LQIGSFYKGV AEGEVDPAFG PLEALRLSIQ TDSPVWVILS EIFLKKAD

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"A novel second isoenzyme of the human UDP-N-acetylglucosamine:alpha1,3-D-mannoside beta1,4-N-acetylglucosaminyltransferase family: cDNA cloning, expression, and chromosomal assignment." Yoshida A., Minowa M.T., Takamatsu S., Hara T., Ikenaga H., Takeuchi M. Glycoconj. J. 15:1115-1123(1998) [PubMed: 10372966] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA]. Strain: 129/SvJ.
[2]	"Lineage-specific biology revealed by a finished genome assembly of the mouse." Church D.M., Goodstadt L., Hillier L.W., Zody M.C., Goldstein S., She X., Bult C.J., Agarwala R., Cherry J.L., DiCuccio M., Hlavina W., Kapustin Y., Meric P., Maglott D., Birtle Z., Marques A.C., Graves T., Zhou S. , Teague B., Potamousis K., Churas C., Place M., Herschleb J., Runnheim R., Forrest D., Amos-Landgraf J., Schwartz D.C., Cheng Z., Lindblad-Toh K., Eichler E.E., Ponting C.P. PLoS Biol. 7:E1000112-E1000112(2009) [PubMed: 19468303] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: C57BL/6J.
[3]	"The transcriptional landscape of the mammalian genome." Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J. , Wilming L.G., Aidinis V., Allen J.E., Ambesi-Impiombato A., Apweiler R., Aturaliya R.N., Bailey T.L., Bansal M., Baxter L., Beisel K.W., Bersano T., Bono H., Chalk A.M., Chiu K.P., Choudhary V., Christoffels A., Clutterbuck D.R., Crowe M.L., Dalla E., Dalrymple B.P., de Bono B., Della Gatta G., di Bernardo D., Down T., Engstrom P., Fagiolini M., Faulkner G., Fletcher C.F., Fukushima T., Furuno M., Futaki S., Gariboldi M., Georgii-Hemming P., Gingeras T.R., Gojobori T., Green R.E., Gustincich S., Harbers M., Hayashi Y., Hensch T.K., Hirokawa N., Hill D., Huminiecki L., Iacono M., Ikeo K., Iwama A., Ishikawa T., Jakt M., Kanapin A., Katoh M., Kawasawa Y., Kelso J., Kitamura H., Kitano H., Kollias G., Krishnan S.P., Kruger A., Kummerfeld S.K., Kurochkin I.V., Lareau L.F., Lazarevic D., Lipovich L., Liu J., Liuni S., McWilliam S., Madan Babu M., Madera M., Marchionni L., Matsuda H., Matsuzawa S., Miki H., Mignone F., Miyake S., Morris K., Mottagui-Tabar S., Mulder N., Nakano N., Nakauchi H., Ng P., Nilsson R., Nishiguchi S., Nishikawa S., Nori F., Ohara O., Okazaki Y., Orlando V., Pang K.C., Pavan W.J., Pavesi G., Pesole G., Petrovsky N., Piazza S., Reed J., Reid J.F., Ring B.Z., Ringwald M., Rost B., Ruan Y., Salzberg S.L., Sandelin A., Schneider C., Schoenbach C., Sekiguchi K., Semple C.A., Seno S., Sessa L., Sheng Y., Shibata Y., Shimada H., Shimada K., Silva D., Sinclair B., Sperling S., Stupka E., Sugiura K., Sultana R., Takenaka Y., Taki K., Tammoja K., Tan S.L., Tang S., Taylor M.S., Tegner J., Teichmann S.A., Ueda H.R., van Nimwegen E., Verardo R., Wei C.L., Yagi K., Yamanishi H., Zabarovsky E., Zhu S., Zimmer A., Hide W., Bult C., Grimmond S.M., Teasdale R.D., Liu E.T., Brusic V., Quackenbush J., Wahlestedt C., Mattick J.S., Hume D.A., Kai C., Sasaki D., Tomaru Y., Fukuda S., Kanamori-Katayama M., Suzuki M., Aoki J., Arakawa T., Iida J., Imamura K., Itoh M., Kato T., Kawaji H., Kawagashira N., Kawashima T., Kojima M., Kondo S., Konno H., Nakano K., Ninomiya N., Nishio T., Okada M., Plessy C., Shibata K., Shiraki T., Suzuki S., Tagami M., Waki K., Watahiki A., Okamura-Oho Y., Suzuki H., Kawai J., Hayashizaki Y. Science 309:1559-1563(2005) [PubMed: 16141072] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 1-495. Strain: NOD.
[4]	"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 208-548. Strain: FVB/N. Tissue: Colon.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AB053218 mRNA. Translation: BAC55019.1. AB053219 Genomic DNA. Translation: BAC55020.1. AL627187 Genomic DNA. Translation: CAI25119.1. AK155336 mRNA. Translation: BAE33202.1. BC026638 mRNA. Translation: AAH26638.1. Different initiation. BC031613 mRNA. Translation: AAH31613.1. Different initiation.
IPI	IPI00336218.
RefSeq	NP_666038.3.
UniGene	Mm.86759
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	Q812F8.
Protein family/group databases
CAZy	GT54. Glycosyltransferase Family 54.
PTM databases
PhosphoSite	Q812F8.
Proteomic databases
PRIDE	Q812F8.
Genome annotation databases
Ensembl	ENSMUST00000041725; ENSMUSP00000043346; ENSMUSG00000036620; Mus musculus. [Genome view]
GeneID	103534.
UCSC	uc007iry.1. mouse.
Organism-specific databases
CTD	103534.
MGI	MGI:2143974. Mgat4b.
Phylogenomic databases
HOGENOM	HBG506643.
HOVERGEN	Q812F8.
InParanoid	Q812F8.
OMA	DINRTWS.
OrthoDB	EOG95MQQW.
Enzyme and pathway databases
BRENDA	2.4.1.145. 244.
Gene expression databases
ArrayExpress	Q812F8.
Bgee	Q812F8.
Genevestigator	Q812F8.
Family and domain databases
InterPro	IPR006759. Glyco_transf_54. [Graphical view]
PANTHER	PTHR12062. Glyco_transf_54. 1 hit.
Pfam	PF04666. Glyco_transf_54. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	355989.
SOURCE	Search...

Entry information

Entry name

MGT4B_MOUSE

Accession

Primary (citable) accession number: Q812F8
Secondary accession number(s): Q3U2D9, Q812F9, Q8R0L4

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 29, 2007
Last sequence update:	June 1, 2003
Last modified:	December 15, 2009
This is version 51 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)