4-NITROPHENYL-ALPHA-D-MANNOPYRANOSIDE CAS:10357-27-4 Pa'epa'e Pa'epa'e 98%
Numera Fa'amaumauga | XD90011 |
Igoa Oloa | 4-Nitrophenyl-alpha-D-mannopyranoside |
CAS | 10357-27-4 |
Fuafua mole | C12H15NO8 |
Molecular Weight | 30301.25 |
Fa'amatalaga Teuina | -2ia-8°C |
Fa'atonu Fa'asologa o Fa'asologa | 29400000 |
Fa'amatalaga o oloa
Vai | <5% Karl Fische |
Solubility | 1% ile DMF e manino ma leai se lanu |
mama | Free 4-Nitrophenol <200ppm |
HPLC | >98% |
Fa'aaliga | pa'epa'e pa'epa'e |
Malamalamaga faʻainisinia i se aiga Ca2 +-faʻalagolago o alpha-mannosidases i totonu o se faʻaupuga o le tagata.
O siama colonic, faʻataʻitaʻiina e le Bacteroides thetaiotaomicron, o loʻo faia se sao taua i le tausia o le soifua maloloina o le tagata e ala i le faʻaogaina o aiga tetele o glycoside hydrolases (GHs) e faʻaogaina polysaccharides meaʻai ma glycans talimalo e fai ma meaʻai.O ia fa'alautelega o le aiga GH o lo'o fa'ata'ita'iina e le 23 aiga GH92 glycosidases fa'ailogaina e le B. thetaiotaomicron genome.O iinei matou te faʻaalia ai o alpha-mannosidases ia e galue e ala i se masini faʻaogaina e tasi e faʻaaoga ai N-glycans talimalo.O le fausaga e tolu-dimensional o le GH92 mannosidases e lua o loʻo faʻamatalaina ai se aiga o palatini lua-domain lea o loʻo i ai le nofoaga autu o le catalytic i le faʻaogaina o le domain, e tuʻuina atu ai le acid (glutamate) ma le base (aspartate) fesoasoani i le hydrolysis i se Ca(2+) - auala faalagolago.O fausaga e tolu-dimensional o le GH92s i faʻalavelave faʻatasi ma inhibitors e maua ai le faʻamalamalamaga i le faʻapitoa, masini ma le faʻasologa o le faʻasologa o catalysis.O le Ca(2+) e iai sona sao taua tele e fesoasoani e fa'asese le mannoside mai lona tulaga eleele (4)C(1) le fa'atulagaina o nofoa i le tulaga o suiga. (Bibliography: Nat.Chem.Paiola.6, 125-32, (2010)
chromatography sootaga pito i luma o ovalbumin glycoasparagines i luga o se koluma concanavalin A-sepharose.O se su'esu'ega fa'afuainumera o le tu'ufa'atasiga fa'apitoa o le lectin.
O fegalegaleaiga a Sepharose 4B-immobilized concanavalin A (ConA) ma 10 glycoasparagines na maua mai le ovalbumin na suʻesuʻeina faʻatusatusa e ala i le pito i luma o le chromatography.I lenei metotia, o se vaifofo gaʻo e faʻaaogaina faʻaauau i se koluma ConA-Sepharose ma o le faʻataʻitaʻiga o le elution luma o loʻo fuaina o se parakalafa o le malosi o le fegalegaleaiga.E mafai ona fa'amauina le fa'asologa tumau (Kd) mo saccharide ta'itasi ma le ConA.O se auʻiliʻiliga o le fusifusia o le p-nitrophenyl-alpha, D-mannoside ua faʻaalia ai o mea faʻapipiʻi o ConA e le suia moni pe a maeʻa le faʻaogaina ile Sepharose 4B.O ovalbumin glycoasparagines taʻitasi na faʻailogaina i le tritium e ala i le faʻaitiitia o le methylation metotia mo le auiliiliga.O se faʻatusatusaga o tau Kd na maua na faʻaalia ai o le fusifusia o le ConA e matua ese lava ma sina eseesega faʻavae o le filifili glycosyl.O fa'ai'uga ua ta'u mai ai e iloa e ConA se fa'atulagaga o filifili glycosyl fa'apitoa, Man alpha 1-6(Man alpha 1-3) Man, lea e le itiiti ifo ma le tasi le hydroxyl group i le tulaga C-3 o le C-6-linked mannose e tatau ona sa'oloto.