Differential expression and enzymatic properties of GalNAc-4-sulfotransferase-1 and GalNAc-4-sulfotransferase-2.
Differential expression and enzymatic properties of GalNAc-4-sulfotransferase-1 and GalNAc-4-sulfotransferase-2.
复制标题
GalNAc-4-sulfotransferase-1 和 GalNAc-4-sulfotransferase-2 的差异表达和酶特性。
DOI:
10.1093/glycob/cwj024
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发表时间:
2005
期刊:
影响因子:
4.3
通讯作者:
Baenziger,JacquesU
中科院分区:
文献类型:
--
作者:
Boregowda,RajeevK;Mi,YiLing;Bu,Hongyin;Baenziger,JacquesU
We have cloned two GalNAc-4-sulfotransferases, GalNAc-4-ST1 and GalNAc-4-ST2, that transfer sulfate to terminal β1,4-linked GalNAc. In conjunction with the action of protein-specific β1,4GalNAc-transferases, GalNAc-4-ST1 and GalNAc-4-ST2 account for the presence of terminal β1,4-linked GalNAc-4-SO4on glycoproteins such as lutropin, thyrotropin (TSH), proopiomelanocortin (POMC), carbonic anhydratase-VI (CA-VI), and tenascin-R. GalNAc-4-ST1 and GalNAc-4-ST2 can be distinguished by their differing specificity for oligosaccharide acceptors and temperature lability. The differences in properties have been used to show that the levels of GalNAc-4-ST1 and GalNAc-4-ST2 activity are proportionate to the levels of their respective transcripts. Furthermore, we have found that both transcript and activity levels of GalNAc-4-ST1 and GalNAc-4-ST2 vary widely among different tissues indicating that the regulation of their expression differs. Differences in specificity and the regulation of expression may account for existence of two GalNAc-4-sulfotransferasesin vivo. The highest levels of both GalNAc-4-ST1 and GalNAc-4-ST2 transcripts are present in the pituitary of the mouse with multiple cell types that produce glycoproteins terminating with GalNAc-4-SO4. Genetic ablation of both GalNAc-4-ST1 and GalNAc-4-ST2 may be necessary to alter the pattern and/or extent of sulfate addition to terminal β1,4GalNAc in tissues such as pituitary.
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DOI:
--
发表时间:
2003
期刊:
Journal of Biochemistry (Tokyo)
影响因子:
--
作者:
T. Okuda;Toshihiko Sawada;H. Nakano;K. Matsubara;Y. Matsuda;M. Fukuta;O. Habuchi
通讯作者:
O. Habuchi
影响因子:
2.7
作者:
Ghosh,AK;Krishnan,K;Walters,DE;Cho,W;Cho,H;Koo,Y;Trevino,J;Holland,L;Buthod,J
通讯作者:
Buthod,J
影响因子:
4.8
作者:
Hyung;Matthias R. Evers;Guoqing Xia;J. Baenziger;M. Schachner
通讯作者:
M. Schachner
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Dharmesh,SM;Skelton,TP;Baenziger,JU
通讯作者:
Baenziger,JU
影响因子:
4.8
作者:
L. Hooper;O. Hindsgaul;J. Baenziger
通讯作者:
J. Baenziger