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O15294 (OGT1_HUMAN) Reviewed, UniProtKB/Swiss-Prot

Last modified January 25, 2012. Version 134. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (7) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110 kDa subunit

EC=2.4.1.-
Alternative name(s):
O-GlcNAc transferase subunit p110
O-linked N-acetylglucosamine transferase 110 kDa subunit
Gene names
Name:OGT
OrganismHomo sapiens (Human)
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length1046 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Addition of nucleotide-activated sugars directly onto the polypeptide through O-glycosidic linkage with the hydroxyl of serine or threonine. Mediates the O-glycosylation of MLL5 and HCFC1. Promotes proteolytic maturation of HCFC1. Ref.9 Ref.10 Ref.11 Ref.13

Catalytic activity

UDP-N-acetyl-D-glucosamine + peptide = UDP + N-acetyl-beta-D-glucosaminyl-peptide. Ref.9 Ref.10 Ref.11 Ref.13

Enzyme regulation

Subject to product inhibition by UDP. Ref.13

Pathway

Protein modification; protein glycosylation.

Subunit structure

Heterotrimer of two 110 kDa and one 70 kDa subunits. It is not known if the 70 kDa subunit is encoded by a separate gene or is the product of either of a proteolytic degradation or an alternative initiation of the 110 kDa subunit By similarity. Interacts with ATXN10 By similarity. Component of the MLL5-L complex, at least composed of MLL5, STK38, PPP1CA, PPP1CB, PPP1CC, HCFC1, ACTB and OGT. Interacts directly with HCFC1. Ref.6 Ref.10

Subcellular location

Cytoplasm. Nucleus. Note: Mostly in the nucleus. Ref.10

Tissue specificity

Highly expressed in pancreas and to a lesser extent in skeletal muscle, heart, brain and placenta. Present in trace amounts in lung and liver.

Domain

The TPR repeat domain mediates recognition of protein substrates. Ref.11

Post-translational modification

Ubiquitinated, leading to its proteasomal degradation. Ref.10

Sequence similarities

Belongs to the O-GlcNAc transferase family.

Contains 13 TPR repeats.

Biophysicochemical properties

Kinetic parameters:

KM=1.8 µM for UDP-N-acetyl-D-glucosamine Ref.13

Binary interactions

Alternative products

This entry describes 4 isoforms produced by alternative splicing. [Align] [Select]
Isoform 3 (identifier: O15294-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: O15294-2)

The sequence of this isoform differs from the canonical sequence as follows:
     1-176: MASSVGNVAD...LKALGRLEEA → MLQGHFWLVR...PSHLLSLTPP
Isoform 1 (identifier: O15294-3)

The sequence of this isoform differs from the canonical sequence as follows:
     13-22: Missing.
Isoform 4 (identifier: O15294-4)

The sequence of this isoform differs from the canonical sequence as follows:
     1-381: Missing.
Note: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed Ref.5
Chain2 – 10461045UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110 kDa subunit
PRO_0000191772

Regions

Repeat21 – 5434TPR 1
Repeat89 – 12234TPR 2
Repeat123 – 15634TPR 3
Repeat157 – 19034TPR 4
Repeat191 – 22434TPR 5
Repeat225 – 25834TPR 6
Repeat259 – 29234TPR 7
Repeat293 – 32634TPR 8
Repeat327 – 36034TPR 9
Repeat361 – 39434TPR 10
Repeat395 – 42834TPR 11
Repeat429 – 46234TPR 12
Repeat463 – 47311TPR 13; truncated
Nucleotide binding905 – 9084UDP
Nucleotide binding911 – 9144UDP
Nucleotide binding929 – 9313UDP
Motif487 – 50317Nuclear localization signal Potential

Sites

Active site5081Proton acceptor Probable
Binding site8491UDP
Binding site8521UDP
Binding site9351UDP

Amino acid modifications

Modified residue21N-acetylalanine Ref.5 Ref.8
Modified residue201Phosphoserine Ref.7

Natural variations

Alternative sequence1 – 381381Missing in isoform 4.
VSP_040764
Alternative sequence1 – 176176MASSV…RLEEA → MLQGHFWLVREGIMISPSSP PPPNLFFFPLQIFPFPFTSF PSHLLSLTPP in isoform 2.
VSP_006553
Alternative sequence13 – 2210Missing in isoform 1.
VSP_014164
Natural variant5381L → P Found in a renal cell carcinoma sample; somatic mutation.
VAR_064736

Experimental info

Mutagenesis2081W → E: Abolishes homodimerization of the TPR domain. Slightly reduced enzyme activity; when associated with D-211. Ref.11
Mutagenesis2111I → D: Abolishes homodimerization of the TPR domain. Slightly reduced enzyme activity; when associated with E-208. Ref.11
Mutagenesis5081H → A: Loss of enzyme activity. Ref.13
Mutagenesis5681H → A: Reduces enzyme activity by about 95%. Ref.13
Mutagenesis9111H → A: Reduces enzyme activity by over 90%. Ref.13
Sequence conflict3081S → Q in CAB62528. Ref.3
Sequence conflict6631L → P in CAD97853. Ref.3

Secondary structure

................................................... 1046
Helix Strand Turn

Details...

Sequences

Sequence LengthMass (Da)Tools
Isoform 3 [UniParc].

Last modified June 21, 2005. Version 3.
Checksum: 852ED68BDDE63363

FASTA1,046116,925
        10         20         30         40         50         60 
MASSVGNVAD STEPTKRMLS FQGLAELAHR EYQAGDFEAA ERHCMQLWRQ EPDNTGVLLL 

        70         80         90        100        110        120 
LSSIHFQCRR LDRSAHFSTL AIKQNPLLAE AYSNLGNVYK ERGQLQEAIE HYRHALRLKP 

       130        140        150        160        170        180 
DFIDGYINLA AALVAAGDME GAVQAYVSAL QYNPDLYCVR SDLGNLLKAL GRLEEAKACY 

       190        200        210        220        230        240 
LKAIETQPNF AVAWSNLGCV FNAQGEIWLA IHHFEKAVTL DPNFLDAYIN LGNVLKEARI 

       250        260        270        280        290        300 
FDRAVAAYLR ALSLSPNHAV VHGNLACVYY EQGLIDLAID TYRRAIELQP HFPDAYCNLA 

       310        320        330        340        350        360 
NALKEKGSVA EAEDCYNTAL RLCPTHADSL NNLANIKREQ GNIEEAVRLY RKALEVFPEF 

       370        380        390        400        410        420 
AAAHSNLASV LQQQGKLQEA LMHYKEAIRI SPTFADAYSN MGNTLKEMQD VQGALQCYTR 

       430        440        450        460        470        480 
AIQINPAFAD AHSNLASIHK DSGNIPEAIA SYRTALKLKP DFPDAYCNLA HCLQIVCDWT 

       490        500        510        520        530        540 
DYDERMKKLV SIVADQLEKN RLPSVHPHHS MLYPLSHGFR KAIAERHGNL CLDKINVLHK 

       550        560        570        580        590        600 
PPYEHPKDLK LSDGRLRVGY VSSDFGNHPT SHLMQSIPGM HNPDKFEVFC YALSPDDGTN 

       610        620        630        640        650        660 
FRVKVMAEAN HFIDLSQIPC NGKAADRIHQ DGIHILVNMN GYTKGARNEL FALRPAPIQA 

       670        680        690        700        710        720 
MWLGYPGTSG ALFMDYIITD QETSPAEVAE QYSEKLAYMP HTFFIGDHAN MFPHLKKKAV 

       730        740        750        760        770        780 
IDFKSNGHIY DNRIVLNGID LKAFLDSLPD VKIVKMKCPD GGDNADSSNT ALNMPVIPMN 

       790        800        810        820        830        840 
TIAEAVIEMI NRGQIQITIN GFSISNGLAT TQINNKAATG EEVPRTIIVT TRSQYGLPED 

       850        860        870        880        890        900 
AIVYCNFNQL YKIDPSTLQM WANILKRVPN SVLWLLRFPA VGEPNIQQYA QNMGLPQNRI 

       910        920        930        940        950        960 
IFSPVAPKEE HVRRGQLADV CLDTPLCNGH TTGMDVLWAG TPMVTMPGET LASRVAASQL 

       970        980        990       1000       1010       1020 
TCLGCLELIA KNRQEYEDIA VKLGTDLEYL KKVRGKVWKQ RISSPLFNTK QYTMELERLY 

      1030       1040 
LQMWEHYAAG NKPDHMIKPV EVTESA 

« Hide

Isoform 2 [UniParc].

Checksum: 766BF416ABD547C4
Show »

FASTA920103,012
Isoform 1 [UniParc].

Checksum: C3BD67340925A2C2
Show »

FASTA1,036115,706
Isoform 4 [UniParc].

Checksum: 181B846A6B09E63A
Show »

FASTA66574,536

References

« Hide 'large scale' references
[1]"O-linked GlcNAc transferase is a conserved nucleocytoplasmic protein containing tetratricopeptide repeats."
Lubas W.A., Frank D.W., Krause M., Hanover J.A.
J. Biol. Chem. 272:9316-9324(1997) [PubMed: 9083068] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), PROTEIN SEQUENCE OF 227-236 AND 955-971.
Tissue: Liver.
[2]"Human O-GlcNAc transferase (OGT): genomic structure, analysis of splice variants, fine mapping in Xq13.1."
Nolte D., Muller U.
Mamm. Genome 13:62-64(2002) [PubMed: 11773972] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORMS 1; 2 AND 3).
[3]"The full-ORF clone resource of the German cDNA consortium."
Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U., Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D., Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A., Wiemann S., Schupp I.
BMC Genomics 8:399-399(2007) [PubMed: 17974005] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 4).
Tissue: Endometrium, Fetal brain and Spinal cord.
[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] (ISOFORMS 1 AND 3).
Tissue: Colon and Pancreas.
[5]Bienvenut W.V., Dhillon A.S., Kolch W.
Submitted (FEB-2008) to UniProtKB
Cited for: PROTEIN SEQUENCE OF 2-17; 31-42; 161-168; 244-250; 339-348; 734-752; 868-877 AND 1002-1010, CLEAVAGE OF INITIATOR METHIONINE, ACETYLATION AT ALA-2, MASS SPECTROMETRY.
Tissue: Hepatoma.
[6]"Human Sin3 deacetylase and trithorax-related Set1/Ash2 histone H3-K4 methyltransferase are tethered together selectively by the cell-proliferation factor HCF-1."
Wysocka J., Myers M.P., Laherty C.D., Eisenman R.N., Herr W.
Genes Dev. 17:896-911(2003) [PubMed: 12670868] [Abstract]
Cited for: INTERACTION WITH HCFC1.
[7]"A quantitative atlas of mitotic phosphorylation."
Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P.
Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed: 18669648] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-20, MASS SPECTROMETRY.
Tissue: Cervix carcinoma.
[8]"Lys-N and trypsin cover complementary parts of the phosphoproteome in a refined SCX-based approach."
Gauci S., Helbig A.O., Slijper M., Krijgsveld J., Heck A.J., Mohammed S.
Anal. Chem. 81:4493-4501(2009) [PubMed: 19413330] [Abstract]
Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT ALA-2, MASS SPECTROMETRY.
Tissue: Embryonic kidney.
[9]"GlcNAcylation of a histone methyltransferase in retinoic-acid-induced granulopoiesis."
Fujiki R., Chikanishi T., Hashiba W., Ito H., Takada I., Roeder R.G., Kitagawa H., Kato S.
Nature 459:455-459(2009) [PubMed: 19377461] [Abstract]
Cited for: FUNCTION, CATALYTIC ACTIVITY, IDENTIFICATION IN THE MLL5-L COMPLEX.
[10]"Crosstalk between O-GlcNAcylation and proteolytic cleavage regulates the host cell factor-1 maturation pathway."
Daou S., Mashtalir N., Hammond-Martel I., Pak H., Yu H., Sui G., Vogel J.L., Kristie T.M., Affar E.B.
Proc. Natl. Acad. Sci. U.S.A. 108:2747-2752(2011) [PubMed: 21285374] [Abstract]
Cited for: FUNCTION, CATALYTIC ACTIVITY, SUBCELLULAR LOCATION, UBIQUITINATION, INTERACTION WITH HCFC1.
[11]"The superhelical TPR-repeat domain of O-linked GlcNAc transferase exhibits structural similarities to importin alpha."
Jinek M., Rehwinkel J., Lazarus B.D., Izaurralde E., Hanover J.A., Conti E.
Nat. Struct. Mol. Biol. 11:1001-1007(2004) [PubMed: 15361863] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.85 ANGSTROMS) OF 26-400, FUNCTION, CATALYTIC ACTIVITY, DOMAIN, MUTAGENESIS OF TRP-208 AND ILE-211.
[12]"Initial characterization of the human central proteome."
Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., Bennett K.L., Superti-Furga G., Colinge J.
BMC Syst. Biol. 5:17-17(2011) [PubMed: 21269460] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
[13]"Structure of human O-GlcNAc transferase and its complex with a peptide substrate."
Lazarus M.B., Nam Y., Jiang J., Sliz P., Walker S.
Nature 469:564-567(2011) [PubMed: 21240259] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (1.95 ANGSTROMS) OF 323-1041 IN COMPLEXES WITH UDP AND PEPTIDE SUBSTRATE, FUNCTION, CATALYTIC ACTIVITY, ENZYME REGULATION, BIOPHYSICOCHEMICAL PROPERTIES, MUTAGENESIS OF HIS-508; HIS-568 AND HIS-911.
+Additional computationally mapped references.

Web resources

Functional Glycomics Gateway - GTase

UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110kDa subunit

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
U77413 mRNA. Translation: AAB63466.1.
AJ315767 Genomic DNA. Translation: CAC86127.1.
AJ315767 Genomic DNA. Translation: CAC86128.1.
AJ315767 Genomic DNA. Translation: CAC86129.1.
AL050366 mRNA. Translation: CAB62528.1.
AL833085 mRNA. Translation: CAD89970.1.
BX537844 mRNA. Translation: CAD97853.1.
BC014434 mRNA. Translation: AAH14434.1.
BC038180 mRNA. Translation: AAH38180.1.
IPIIPI00005780.
IPI00219856.
IPI00607723.
IPI01008950.
RefSeqNP_858058.1. NM_181672.2.
NP_858059.1. NM_181673.2.
UniGeneHs.405410.

3D structure databases

PDBe
RCSB PDB
PDBj
EntryMethodResolution (Å)ChainPositionsPDBsum
1W3BX-ray2.85A/B26-400[»]
3PE3X-ray2.78A/B/C/D323-1041[»]
3PE4X-ray1.95A/C323-1041[»]
3TAXX-ray1.88A/C323-1041[»]
ProteinModelPortalO15294.
SMRO15294. Positions 23-1038.
ModBaseSearch...

Protein-protein interaction databases

IntActO15294. 18 interactions.
MINTMINT-2998811.
STRINGO15294.

Protein family/group databases

CAZyGT41. Glycosyltransferase Family 41.

PTM databases

PhosphoSiteO15294.

Proteomic databases

PRIDEO15294.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblENST00000373719; ENSP00000362824; ENSG00000147162.
GeneID8473.
KEGGhsa:8473.
NMPDRfig|9606.3.peg.32971.
UCSCuc004eaa.1. human.
uc004eab.1. human.

Organism-specific databases

CTD8473.
GeneCardsGC0XP070752.
H-InvDBHIX0016863.
HGNCHGNC:8127. OGT.
HPACAB034099.
HPA030751.
HPA030752.
MIM300255. gene.
neXtProtNX_O15294.
PharmGKBPA31914.
GenAtlasSearch...

Phylogenomic databases

eggNOGprNOG19154.
GeneTreeENSGT00550000074327.
HOGENOMHBG317910.
HOVERGENHBG000351.
InParanoidO15294.
OMANFPDAYC.
OrthoDBEOG4HQDHJ.
PhylomeDBO15294.

Enzyme and pathway databases

BioCycMetaCyc:ENSG00000147162-MONOMER.

Gene expression databases

ArrayExpressO15294.
BgeeO15294.
CleanExHS_OGT.
GenevestigatorO15294.
GermOnlineENSG00000147162. Homo sapiens.

Family and domain databases

InterProIPR001440. TPR-1.
IPR013026. TPR-contain.
IPR011990. TPR-like_helical.
IPR019734. TPR_repeat.
[Graphical view]
Gene3DG3DSA:1.25.40.10. TPR-like_helical. 2 hits.
KOK09667.
PfamPF00515. TPR_1. 10 hits.
[Graphical view]
SMARTSM00028. TPR. 12 hits.
[Graphical view]
PROSITEPS50005. TPR. 12 hits.
PS50293. TPR_REGION. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

NextBio31706.
SOURCESearch...

Entry information

Entry nameOGT1_HUMAN
AccessionPrimary (citable) accession number: O15294
Secondary accession number(s): Q7Z3K0 expand/collapse secondary AC list , Q8WWM8, Q96CC1, Q9UG57
Entry history
Integrated into UniProtKB/Swiss-Prot: May 30, 2000
Last sequence update: June 21, 2005
Last modified: January 25, 2012
This is version 134 of the entry and version 3 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

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List of human entries with polymorphisms or disease mutations

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

PATHWAY comments

Index of metabolic and biosynthesis pathways

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

SIMILARITY comments

Index of protein domains and families