Characterization of anN-Acetylglucosamine-6-O-sulfotransferase from Human Respiratory Mucosa Active on Mucin Carbohydrate Chains*
Characterization of anN-Acetylglucosamine-6-O-sulfotransferase from Human Respiratory Mucosa Active on Mucin Carbohydrate Chains*
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对粘蛋白碳水化合物链有活性的人呼吸道粘膜 N-乙酰葡糖胺-6-O-磺基转移酶的表征*
DOI:
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发表时间:
1997
影响因子:
4.8
通讯作者:
G. Lamblin
中科院分区:
文献类型:
--
作者:
S. Degroote;J. Lo;G. Strecker;M. Ducourouble;P. Roussel;G. Lamblin
A microsomal GlcNAc-6-O-sulfotransferase activity from human bronchial mucosa, able to transfer a sulfate group from adenosine 3′-phosphate 5′-phosphosulfate onto methyl-N-acetylglucosaminides or terminal N-acetylglucosamine residues of carbohydrate chains from human respiratory mucins, has been characterized. The reaction products containing a terminal HO3S-6GlcNAc were identified by high performance anion-exchange chromatography. Using methyl-β-N-acetylglucosaminide as a substrate, the optimal activity was obtained with 0.1% Triton X-100, 30 mm NaF, 20 mm Mn2+, 5 mm AMP in a 30 mm MOPS (3-(N-morpholino) propanesulfonic acid) buffer at pH 6.7. The apparent K m values for adenosine 3′-phosphate 5′-phosphosulfate and methyl-β-N-acetylglucosaminide were observed at 9.1 × 10−6 m and 0.54 × 10−3 m, respectively. The enzyme had more affinity for carbohydrate chains with a terminal GlcNAc residue than for methyl-β-N-acetylglucosaminide; it was unable to catalyze the transfer of sulfate to position 6 of the GlcNAc residue contained in a terminal Galβ1–4GlcNAc sequence. However, oligosaccharides with a nonreducing terminal HO3S-6GlcNAc were substrates for a β1–4 galactosyltransferase from human bronchial mucosa. These data point out that GlcNAc-6-O-sulfotransferase must act before β1–4 galactosylation in mucin-type oligosaccharide biosynthesis.
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影响因子:
56.9
作者:
J. Riordan;J. Rommens;N. Alon;R. Rozmahel;Z. Grzelczak;J. Zieleński;N. Plavsic;Jia-Ling Chou
通讯作者:
J. Riordan;J. Rommens;N. Alon;R. Rozmahel;Z. Grzelczak;J. Zieleński;N. Plavsic;Jia-Ling Chou
影响因子:
2.9
作者:
Sanders,WJ;Katsumoto,TR;Bertozzi,CR;Rosen,SD;Kiessling,LL
通讯作者:
Kiessling,LL
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Carter,SR;Slomiany,A;Gwozdzinski,K;Liau,YH;Slomiany,BL
通讯作者:
Slomiany,BL
影响因子:
3
作者:
Slomiany,A;Murty,VL;Liau,YH;Carter,SR;Slomiany,BL
通讯作者:
Slomiany,BL
DOI:
10.1172/jci118372
发表时间:
1995
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Zhang,Y;Doranz,B;Yankaskas,JR;Engelhardt,JF
通讯作者:
Engelhardt,JF