>cd02510 pp-GalNAc-T pp-GalNAc-T initiates the formation of mucin-type O-linked glycans. UDP-GalNAc: polypeptide alpha-N-acetylgalactosaminyltransferases (pp-GalNAc-T) initiate the formation of mucin-type, O-linked glycans by catalyzing the transfer of alpha-N-acetylgalactosamine (GalNAc) from UDP-GalNAc to hydroxyl groups of Ser or Thr residues of core proteins to form the Tn antigen (GalNAc-a-1-O-Ser/Thr). These enzymes are type II membrane proteins with a GT-A type catalytic domain and a lectin domain located on the lumen side of the Golgi apparatus. In human, there are 15 isozymes of pp-GalNAc-Ts, representing the largest of all glycosyltransferase families. Each isozyme has unique but partially redundant substrate specificity for glycosylation sites on acceptor proteins.

Probab=99.95 E-value=6e-28 Score=189.47 Aligned_cols=190 Identities=23% Similarity=0.240 Sum_probs=141.5 Q ss_pred EEEECCCCCCHHHHHHHHHHHHHCCCCCE--EEEEECCCCCHHHHHHHHHHHH-HHCCCEEEEECCCCCCHHHHHHHHHH Q ss_conf 99974758988899999999982889974--8999877578067999999988-75798899980888856489999999 Q gi|254780918|r 70 SVIMPVYKIKKEWLEMAIESVRSQIYSHW--ELCIAEDCSGDIETVSLLKKYA-NMDSRIKVVFRAKNGHISAASNSAAQ 146 (623) Q Consensus 70 SIiip~yn~~~~~L~~~i~Si~~Qty~~~--EliivdD~S~d~~~~~~l~~~~-~~d~ri~~~~~~~n~g~~~a~N~~l~ 146 (623) T Consensus 1 SVII~f~NE~~s~LlRtv~Svl~rTP~~LL~EIILVDD~S~~~~l~~~l~~~~~~~~~~Vkvir~~~r~GlirAR~~Ga~ 80 (299) T cd02510 1 SVIIIFHNEALSTLLRTVHSVINRTPPELLKEIILVDDFSDKPELKLLLEEYYKKYLPKVKVLRLKKREGLIRARIAGAR 80 (299) T ss_pred CEEEEEECCHHHHHHHHHHHHHHCCCHHHCCEEEEEECCCCCHHHHHHHHHHHHHHCCCEEEEECCCCCCHHHHHHHHHH T ss_conf 98999947808889998999986399889368999967999524312479999861894599987765324999877688 Q ss_pred HCCCCEEEEECCCCCCCCCHHHHHHHHHHHCCCCCCCCCCCEEECCCC---------CEEE----ECCC--CCCCHHH-- Q ss_conf 659989999769875273207999999873247554202220675898---------3654----2256--6789667-- Q gi|254780918|r 147 LATSEWLALLDHDDLLHPTALYYVADAINNNPNAEIIYSDEDKINENQ---------IRSG----PYFK--YDFNPEL-- 209 (623) Q Consensus 147 ~a~Ge~i~~lD~DD~l~p~~L~~~~~~l~~~p~~~~iYsDe~~i~~~g---------~~~~----p~fk--p~~~~~~-- 209 (623) T Consensus 81 ~A~G~vlvFLDsH~e~~~gWLePLL~~I~en~~~V-v~P~Id~Id~~tf~y~~~~~~~~g~f~W~l~f~w~~~~~~~~~~ 159 (299) T cd02510 81 AATGDVLVFLDSHCEVNVGWLEPLLARIAENRKTV-VCPIIDVIDADTFEYRGSSGDARGGFDWSLHFKWLPLPEEERRR 159 (299) T ss_pred HHCCCEEEEECCCEEECCCHHHHHHHHHHHCCCEE-EECCCCEECCCCCEEECCCCCEEEEECCEEEEEEECCCHHHHCC T ss_conf 73486699936872314677899999987299889-97873128788823641688635898022478883299789434 Q ss_pred ------HCCCCCCCHHHHHHHHHHHHHCCCCCCCC--CCCCCHHHHHHHHCCCCCCEEECC Q ss_conf ------41478543145768999997188789877--302741367886424875220068 Q gi|254780918|r 210 ------FHVHNMITHLGVYRTETFKKIGGFREKFE--GAQDYDLVLRFLENIDLSQIIHIP 262 (623) Q Consensus 210 ------l~s~nyi~~~~~~rr~~~~~iGgf~~~~~--~~~D~Dl~lR~~~~~~~~~i~hip 262 (623) T Consensus 160 ~~~~~p~~sP~maGGlfAi~r~~F~elG~yD~gm~~WGgEn~ElSfRvW~CGG--~i~~vP 218 (299) T cd02510 160 ESPTAPIRSPTMAGGLFAIDREWFLELGGYDEGMDIWGGENLELSFKVWQCGG--SIEIVP 218 (299) T ss_pred CCCCCCEECCCCCCEEEEEEHHHHHHHCCCCCCCCCCCCCCCEEEEEEHHCCC--EEEEEE T ss_conf 48897676540012158988999997479787773147411132302021286--599854

HHsearch alignment for GI: 254780918 and conserved domain: cd02510