| First Author | Kotani N | Year | 2004 |
| Journal | Arch Biochem Biophys | Volume | 426 |
| Issue | 2 | Pages | 258-65 |
| PubMed ID | 15158676 | Mgi Jnum | J:90896 |
| Mgi Id | MGI:3045482 | Doi | 10.1016/j.abb.2004.03.001 |
| Citation | Kotani N, et al. (2004) Polylactosamine synthesis and branch formation of N-glycans in beta1,4-galactosyltransferase-1-deficient mice. Arch Biochem Biophys 426(2):258-65 |
| abstractText | Analysis of glycans from erythrocyte membrane glycoproteins from beta1,4-galactosyltransferase-1 (beta4GalT-1)-deficient mice revealed moderately decreased galactosylation but comparable polylactosamine content compared to control beta4GalT-1(+/-) mice. The increased expression of more branched N-glycans was observed in beta4GalT-1(-/-) mice, and its extent was more remarkable in elder beta4GalT-1(-/-) mice (28 weeks old) than in younger beta4GalT-1(-/-) mice (6-9 weeks old). In relation to this issue, the less galactosylation of biantennary glycans was observed in the elder group, suggesting that beta4GalTs actually compete with N-acetylglucosaminyltransferases IV and V in erythroid cells. In contrast, approximately 80% of core 2 O-glycans were not beta1,4-galactosylated regardless of age of the knockout mice. These results suggest that beta4GalT-1 expressed in erythroid cells may regulate a constant branch formation of N-glycans and plays a predominant role in beta1,4-galactosylation of core 2 O-glycan. |
