GT-CORE (public beta v1)

Glycosyltransferase Curated Online Resource for Enzymology

Family-organised sequence, structure, mechanism and substrate-specificity records for the CAZy glycosyltransferases

Stt3B

Drosophila melanogaster · dolichyl-diphosphooligosaccharide--protein glycotransferase (EC 2.4.99.18)

GT66Model organism · annotation ≥ 4Fold GT-CInverting

External resources

Identification and annotation

CAZy familyGT66 · CAZy entry
Gene symbolStt3B
Synonyms / alternate names
  • anon-WO03054008.7
  • BcDNA.GM01838
  • BcDNA:GM01838
  • Dmel\CG7748
  • l(3)j2D9
  • OstStt3
  • STT
UniProt accessionQ9XZ53
NCBI Gene ID43005
Source speciesDrosophila melanogaster
Taxonomic domainEukaryota
UniProt annotation level4

Function and localisation

Enzyme functiondolichyl-diphosphooligosaccharide--protein glycotransferase (EC 2.4.99.18)
Subcellular locationEndoplasmic reticulum membrane

Structure and mechanism

Fold typeGT-C
Catalytic mechanismInverting
Cation dependenceYes (Mg2+, Mn2+)
Oligomeric statenot curated
PDB structuresnot curated

Donor and acceptor specificity

Sugar nucleotide donornot curated
Donor CCD code(s)not curated
Acceptor substrate(s)
  • a di-trans,poly-cis-dolichyl diphosphooligosaccharide
  • L-asparaginyl-[protein]
Acceptor CCD / GlycoCTnot curated

Protein sequences

Full protein sequence

774 aa
MNRTPKMLNSKVAGYSSLITFAILLIAWLAGFSSRLFAVIRFESIIHEFDPWFNYRATAYMVQNGWYNFLNWFDERAWYPLGRIVGGTVYPGLMITSGGIHWLLHVLNIPVHIRDICVFLAPIFSGLTSISTYLLTKELWSAGAGLFAASFIAIVPGYISRSVAGSYDNEGIAIFALQFTYFLWVRSVKTGSVFWSAAAALSYFYMVSAWGGYVFIINLIPLHVFVLLIMGRYSPRLLTSYSTFYILGLLFSMQIPFVGFQPIRTSEHMAALGVFVLLMAVATLRHLQSVLSRNEFRKLFIVGGLLVGVGVFVAVVVLTMLGVVAPWSGRFYSLWDTGYAKIHIPIIASVSEHQPTTWFSFFFDLHILVCAFPVGVWYCIKQINDERVFVVLYAISAVYFAGVMVRLMLTLTPVVCMLAGVAFSGLLDVFLQEDSSKRMGTAISAATEVDEAEDSIEKKTLYDKAGKLKHRTKHDAQQDTGVSSNLKSIVILAVLMLLMMFAVHCTWVTSNAYSSPSIVLAFHNSQDGSRNILDDFREAYYWLSQNTADDARVMSWWDYGYQIAGMANRTTLVDNNTWNNSHIALVGKAMSSTEEKSYEIMTSLDVDYVLVIFGGVIGYSGDDINKFLWMVRIAEGEHPKDIKESDYFTDRGEFRVDAEGAPALLNCLMYKLSYYRFGELKLDYRGPSGYDRTRNAVIGNKDFDLTYLEEAYTTEHWLVRIYRVKKPHEFNRPSLKTKERTIPPANFISRKNSKRRKGYIRNRPVVVKGKRTLK

Catalytic domain sequence

401 aa
ITFAILLIAWLAGFSSRLFAVIRFESIIHEFDPWFNYRATAYMVQNGWYNFLNWFDERAWYPLGRIVGGTVYPGLMITSGGIHWLLHVLNIPVHIRDICVFLAPIFSGLTSISTYLLTKELWSAGAGLFAASFIAIVPGYISRSVAGSYDNEGIAIFALQFTYFLWVRSVKTGSVFWSAAAALSYFYMVSAWGGYVFIINLIPLHVFVLLIMGRYSPRLLTSYSTFYILGLLFSMQIPFVGFQPIRTSEHMAALGVFVLLMAVATLRHLQSVLSRNEFRKLFIVGGLLVGVGVFVAVVVLTMLGVVAPWSGRFYSLWDTGYAKIHIPIIASVSEHQPTTWFSFFFDLHILVCAFPVGVWYCIKQINDERVFVVLYAISAVYFAGVMVRLMLTLTPVVCMLA