CleaveswithintheN,N"-diacetylchitobiose(GlcNAc-GlcNAc)coreofhighmannoseandsomehybridtypeN-glycans. EndoglycosidaseH,mannosyl-glycoproteinendo-beta-N-acetylglucosaminidase.
Source:
RecombinantgenefromStreptomycesplicatus1,expressedinE.coli.
Specificity:
CleavesbetweentheGlcNAcresiduesofthechitobiose(GlcNAc-GlcNAc) coreofN-linkedglycans.Oligomannose&somehybridtypeN-glycansarereleasedfromglycoproteins,leavingasingleGlcNAcattachedtoasparagine.ThisspecificityisdistinctfromEndoF2(GKE-5008)whichalsocleavesbiantennarycomplextypeN-glycans,andPNGaseF(GKE-5006)whichreleasesmostN-glycansbycleaving betweentheinnermostGlcNAcandasparagine.
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Figure1:CleavagespecificityforGKE-5002EndoH.
R1:Man2-150
R2: H,monosaccharideoroligosaccharideatC2and/orC4
R3: GlcNAc±Fuc,AsnorDol-pp
Applications:
SelectivereleaseofhighmannoseN-linkedoligosaccharidesfromglycopeptides/glycoproteins. Theenzymehasfoundextensiveuseinthecharacterizationofglycoproteins,dolichol-linkedglycansandthebiosyntheticpathwayforN-glycosylation.
Shipswith:
Formulation:
50mMsodiumphosphatepH7.5,25mMEDTA, and0.05%sodiumazide
pHoptimum:
5.5
UnitDefinition:
OneunitisdefinedastheamountofenzymerequiredtocatalyzethereleaseofN-linkedoligosaccharidesfrom60μmolesofdenaturedribonucleaseBin1hourat37°C,pH5.5.
Size:30mU(200µl)
Concentration: ≥0.15U/ml
ProductCode: GKE-5002
1.RobbinsPW,TrimbleRB,WirthDF,HeringC,MaleyF,MaleyGF,DasR,GibsonBW,RoyalN,BiemannK. PrimarystructureoftheStreptomycesenzymeendo-beta-N-acetylglucosaminidaseH. JBiolChem.1984Jun25;259(12):7577-83.
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