[HTML][HTML] Crystal structures of β-1, 4-galactosyltransferase 7 enzyme reveal conformational changes and substrate binding

Y Tsutsui, B Ramakrishnan, PK Qasba - Journal of Biological Chemistry, 2013 - ASBMB
The β-1, 4-galactosyltransferase 7 (β4GalT7) enzyme is involved in proteoglycan synthesis.
In the presence of a manganese ion, it transfers galactose from UDP-galactose to xylose on …

Structural snapshots of β-1, 4-galactosyltransferase-I along the kinetic pathway

B Ramakrishnan, V Ramasamy, PK Qasba - Journal of molecular biology, 2006 - Elsevier
During the catalytic cycle of β1, 4-galactosyltransferase-1 (Gal-T1), upon the binding of
Mn2+ followed by UDP–Gal, two flexible loops, a long and a short loop, change their …

Thermodynamic insights into the structural basis governing the donor substrate recognition by human β1, 4-galactosyltransferase 7

F Daligault, S Rahuel-Clermont, S Gulberti… - Biochemical …, 2009 - portlandpress.com
Human β1, 4-GalT (galactosyltransferase) 7 is involved in the biosynthesis of the
tetrasaccharide linker protein region (GlcAβ1→ 3Galβ1→ 3Galβ1→ 4Xylβ1)(where GlcA is …

[HTML][HTML] Crystal structure of the catalytic domain of Drosophila β1, 4-galactosyltransferase-7

B Ramakrishnan, PK Qasba - Journal of biological chemistry, 2010 - ASBMB
The β1, 4-galactosyltransferase-7 (β4Gal-T7) enzyme, one of seven members of the β4Gal-T
family, transfers in the presence of manganese Gal from UDP-Gal to an acceptor sugar …

[HTML][HTML] Identification of key functional residues in the active site of human β1, 4-galactosyltransferase 7: a major enzyme in the glycosaminoglycan synthesis pathway

I Talhaoui, C Bui, R Oriol, G Mulliert, S Gulberti… - Journal of biological …, 2010 - ASBMB
Glycosaminoglycans (GAGs) play a central role in many pathophysiological events, and
exogenous xyloside substrates of β1, 4-galactosyltransferase 7 (β4GalT7), a major enzyme …

Structure and catalytic cycle of β-1, 4-galactosyltransferase

B Ramakrishnan, E Boeggeman, V Ramasamy… - Current opinion in …, 2004 - Elsevier
β-1, 4-galactosyltransferase-1, a housekeeping enzyme that functions in the synthesis of
glycoconjugates, has two flexible loops, one short and one long. Upon binding a metal ion …

Improving solubility of catalytic domain of human β‐1, 4‐galactosyltransferase 1 through rationally designed amino acid replacements

M Malissard, EG Berger - European journal of biochemistry, 2001 - Wiley Online Library
β‐1, 4‐galactosyltransferase 1 (β4gal‐T1, EC 2.4. 1.38) transfers galactose from UDP‐
galactose to free N‐acetyl‐d‐glucosamine or bound N‐acetyl‐d‐glucosamine‐R. Soluble …

The role of tryptophan 314 in the conformational changes of β1, 4-galactosyltransferase-I

V Ramasamy, B Ramakrishnan, E Boeggeman… - Journal of molecular …, 2003 - Elsevier
β1, 4-Galactosyltransferase-I (β4Gal-T1) undergoes critical conformational changes upon
substrate binding from an open conformation (conf-I) to the closed conformation (conf-II) …

[HTML][HTML] Chinese hamster ovary (CHO) cells may express six β4-galactosyltransferases (β4GalTs): consequences of the loss of functional β4GalT-1, β4GalT-6, or both …

JH Lee, S Sundaram, NL Shaper, TS Raju… - Journal of Biological …, 2001 - ASBMB
Six β4-galactosyltransferase (β4GalT) genes have been cloned from mammalian sources.
We show that all six genes are expressed in the Gat− 2 line of Chinese hamster ovary cells …

Crystal structure of β1, 4-galactosyltransferase complex with UDP-Gal reveals an oligosaccharide acceptor binding site

B Ramakrishnan, PV Balaji, PK Qasba - Journal of molecular biology, 2002 - Elsevier
The crystal structure of the catalytic domain of bovine β1, 4-galactosyltransferase (Gal-T1) co-
crystallized with UDP-Gal and MnCl2 has been solved at 2.8 Å resolution. The structure not …