Skip Header

You are using a version of Internet Explorer that may not display all features of this website. Please upgrade to a modern browser.
Contribute Send feedback
Read comments (?) or add your own

Q5RBC3 (EXT1_PONAB) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 47. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Exostosin-1

EC=2.4.1.224
EC=2.4.1.225
Alternative name(s):
Glucuronosyl-N-acetylglucosaminyl-proteoglycan/N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase
Multiple exostoses protein 1 homolog
Gene names
Name:EXT1
OrganismPongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii) [Reference proteome]
Taxonomic identifier9601 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaePongo

Protein attributes

Sequence length746 AA.
Sequence statusComplete.
Protein existenceEvidence at transcript level

General annotation (Comments)

Function

Glycosyltransferase required for the biosynthesis of heparan-sulfate. The EXT1/EXT2 complex possesses substantially higher glycosyltransferase activity than EXT1 or EXT2 alone By similarity.

Catalytic activity

UDP-N-acetyl-D-glucosamine + beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan = UDP + N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan.

UDP-alpha-D-glucuronate + N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-proteoglycan = UDP + beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-proteoglycan.

Pathway

Protein modification; protein glycosylation.

Subunit structure

Forms a homo/hetero-oligomeric complex with EXT2 By similarity.

Subcellular location

Endoplasmic reticulum membrane; Single-pass type II membrane protein By similarity. Golgi apparatus membrane; Single-pass type II membrane protein By similarity. Note: The EXT1/EXT2 complex is localized in the Golgi apparatus By similarity.

Sequence similarities

Belongs to the glycosyltransferase 47 family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 746746Exostosin-1
PRO_0000366931

Regions

Topological domain1 – 77Cytoplasmic Potential
Transmembrane8 – 2821Helical; Signal-anchor for type II membrane protein; Potential
Topological domain29 – 746718Lumenal Potential

Amino acid modifications

Glycosylation891N-linked (GlcNAc...) Potential
Glycosylation3301N-linked (GlcNAc...) Potential

Sequences

Sequence LengthMass (Da)Tools
Q5RBC3 [UniParc].

Last modified December 21, 2004. Version 1.
Checksum: 2BDBFD1396DBA31F

FASTA74686,270
        10         20         30         40         50         60 
MQAKKRYFIL LSAGSCLALL FYFGGLQFRA SRSHSRREEH SGRNGLHHPS PDHFWPRFPD 

        70         80         90        100        110        120 
ALRPFVPWDQ LENEDSSVHI SPRQKRDANS SIYKGKKCRM ESCFDFTLCK KNGFKVYAYP 

       130        140        150        160        170        180 
QQKGEKIAES YQNILAAIEG SRFYTSDPSQ ACLFVLSLDT LDRDQLSPQY VHNLRSKVQS 

       190        200        210        220        230        240 
LHLWNNGRNH LIFNLYSGTW PDYTEDVGFD IGQAMLAKAS ISTENFRPNF DVSIPLFSKD 

       250        260        270        280        290        300 
HPRTGGERGF LKFNTIPPLR KYMLVFKGKR YLTGIGSDTR NALYHVHNGE DVVLLTTCKH 

       310        320        330        340        350        360 
GKDWQKHKDS RCDRDNTEYE KYDYREMLHN ATFCLVPRGR RLGSFRFLEA LQAACVPVML 

       370        380        390        400        410        420 
SNGWELPFSE VINWNQAAVI GDERLLLQIP STIRSIHQDK ILALRQQTQF LWEAYFSSVE 

       430        440        450        460        470        480 
KIVLTTLEII QDRIFKHISR NSLIWNKHPG GLFVLPQYSS YLGDFPYYYA NLGLKPPSKF 

       490        500        510        520        530        540 
TAVIHAVTPL VSQSQPVLKL LVAAAKSQYC AQIIVLWNCD KPLPAKHRWP ATAVPVIVIE 

       550        560        570        580        590        600 
GESKVMSSRF LPYDNIITDA VLSLDEDTVL STTEVDFAFT VWRSFPERIV GYPARSHFWD 

       610        620        630        640        650        660 
NSKERWGYTS KWTNDYSMVL TGAAIYHKYY HYLYSHYLPA SLKNMVDQLA NCEDILMNFL 

       670        680        690        700        710        720 
VSAVTKLPPI KVTQKEQYKE TMMGQTSRAS RWADPDHFAQ RQSCMNTFAS WFGYMPLIHS 

       730        740 
QMRLDPVLFK DQVSILRKKY RDIERL 

« Hide

References

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

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CR858728 mRNA. Translation: CAH90937.1.
RefSeqNP_001125538.1. NM_001132066.1.
UniGenePab.9186.

3D structure databases

ProteinModelPortalQ5RBC3.
ModBaseSearch...
MobiDBSearch...

Protein family/group databases

CAZyGT47. Glycosyltransferase Family 47.
GT64. Glycosyltransferase Family 64.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID100172450.
KEGGpon:100172450.

Organism-specific databases

CTD2131.

Phylogenomic databases

HOGENOMHOG000266990.
HOVERGENHBG003459.
InParanoidQ5RBC3.
KOK02366.

Enzyme and pathway databases

UniPathwayUPA00378.

Family and domain databases

Gene3D3.90.550.10. 1 hit.
InterProIPR004263. Exostosin.
IPR027670. Exostosin-1.
IPR015338. HexNAc_Trfase_a.
IPR029044. Nucleotide-diphossugar_trans.
[Graphical view]
PANTHERPTHR11062. PTHR11062. 1 hit.
PTHR11062:SF45. PTHR11062:SF45. 1 hit.
PfamPF03016. Exostosin. 1 hit.
PF09258. Glyco_transf_64. 1 hit.
[Graphical view]
SUPFAMSSF53448. SSF53448. 1 hit.
ProtoNetSearch...

Entry information

Entry nameEXT1_PONAB
AccessionPrimary (citable) accession number: Q5RBC3
Entry history
Integrated into UniProtKB/Swiss-Prot: March 24, 2009
Last sequence update: December 21, 2004
Last modified: June 11, 2014
This is version 47 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways