Leppanen A - Search Results

1

In vitro biosynthesis of a decasaccharide prototype of multiply branched polylactosaminoglycan backbones.

Leppanen A, Salminen H, Zhu Y, Maaheimo H, Helin J, Costello CE, Renkonen O. Leppanen A, et al. Biochemistry. 1997 Jun 10;36(23):7026-36. doi: 10.1021/bi9627673. Biochemistry. 1997. PMID: 9188700

2

Elongation of both branches of biantennary backbones of oligo-(N-acetyllactosamino)glycans by human serum (1----3)-N-acetyl-beta-D- glucosaminyltransferase.

Vilkman A, Niemelä R, Penttilä L, Helin J, Leppänen A, Seppo A, Maaheimo H, Lusa S, Renkonen O. Vilkman A, et al. Among authors: leppanen a. Carbohydr Res. 1992 Mar 16;226(1):155-74. doi: 10.1016/0008-6215(92)84061-v. Carbohydr Res. 1992. PMID: 1386788

3

Enzymatic in vitro synthesis of radiolabeled pentasaccharides GlcNAc beta 1-3(Gal beta 1-4GlcNAc beta 1-6)Gal beta 1-4GlcNAc/Glc and the isomeric Gal beta 1-4GlcNAc beta 1-3(GlcNAc beta 1-6)Gal beta 1-4GlcNAc/Glc.

Renkonen O, Leppänen A, Niemelä R, Vilkman A, Helin J, Penttilä L, Maaheimo H, Seppo A, Suopanki J. Renkonen O, et al. Among authors: leppanen a. Biochem Cell Biol. 1992 Jan;70(1):86-9. Biochem Cell Biol. 1992. PMID: 1581037

4

Human serum contains a novel beta 1,6-N-acetylglucosaminyltransferase activity that is involved in midchain branching of oligo (N-acetyllactosaminoglycans).

Leppänen A, Penttilä L, Niemelä R, Helin J, Seppo A, Lusa S, Renkonen O. Leppänen A, et al. Biochemistry. 1991 Sep 24;30(38):9287-96. doi: 10.1021/bi00102a022. Biochemistry. 1991. PMID: 1832557

5

The beta 1,6-GlcNAc transferase activity present in hog gastric mucosal microsomes catalyses site-specific branch formation on a long polylactosamine backbone.

Helin J, Penttilä L, Leppänen A, Maaheimo H, Lauri S, Costello CE, Renkonen O. Helin J, et al. Among authors: leppanen a. FEBS Lett. 1997 Aug 4;412(3):637-42. doi: 10.1016/s0014-5793(97)00818-1. FEBS Lett. 1997. PMID: 9276482 Free article.

We find that the beta 1,6-GlcNAc transferase activity present in hog gastric mucosal microsomes converts the linear pentasaccharide GlcNAc beta 1-3Gal beta 1-4GlcNAc beta 1-3Gal beta 1-4GlcNAc (1) in a site-specific way to the branch-bearing hexasaccharide GlcNAc beta 1-3( …

We find that the beta 1,6-GlcNAc transferase activity present in hog gastric mucosal microsomes converts the linear pentasaccharide GlcNAc b …

6

Enzymatic midchain branching of polylactosamine backbones is restricted in a site-specific manner in alpha 1,3-fucosylated chains.

Leppänen A, Niemelä R, Renkonen O. Leppänen A, et al. Biochemistry. 1997 Nov 4;36(44):13729-35. doi: 10.1021/bi9712807. Biochemistry. 1997. PMID: 9354644

Thereby, 1 is converted to the branched pentasaccharide Galbeta1-4GlcNAcbeta1-3(GlcNAcbeta1-6)Galbeta1-4 GlcNAc and 4 to the doubly branched octasaccharide Galbeta1-4GlcNAcbeta1-3(GlcNAcbeta1-6)Galbeta1-+ ++4GlcNAcbeta1-3(GlcNAcb eta1-6)Galbeta1-4GlcNAc [Leppanen, A …

Thereby, 1 is converted to the branched pentasaccharide Galbeta1-4GlcNAcbeta1-3(GlcNAcbeta1-6)Galbeta1-4 GlcNAc and 4 to the doubly branched …

7

Biosynthesis of branched polylactosaminoglycans. Embryonal carcinoma cells express midchain beta1,6-N-acetylglucosaminyltransferase activity that generates branches to preformed linear backbones.

Leppänen A, Zhu Y, Maaheimo H, Helin J, Lehtonen E, Renkonen O. Leppänen A, et al. J Biol Chem. 1998 Jul 10;273(28):17399-405. doi: 10.1074/jbc.273.28.17399. J Biol Chem. 1998. PMID: 9651325 Free article.

8

Oligo-N-acetyllactosaminoglycans bearing Gal beta 1-4(Fuc alpha 1-3)GlcNAc sequences reveal lower affinities than their nonfucosylated, or alpha(1-2) fucosylated counterparts for immobilized wheat germ agglutinin.

Renkonen O, Helin J, Penttilä L, Maaheimo H, Niemelä R, Leppänen A, Seppo A, Hård K. Renkonen O, et al. Among authors: leppanen a. Glycoconj J. 1991 Aug;8(4):361-7. doi: 10.1007/BF00731349. Glycoconj J. 1991. PMID: 1841677

9

Construction of linear GlcNAc beta 1-6Gal beta 1-OR type oligosaccharides by partial cleavage of GlcNAc beta 1-3(GlcNAc beta 1-6)Gal beta 1-OR sequences with jack bean beta-N-acetylhexosaminidase.

Renkonen O, Niemelä R, Leppänen A, Maaheimo H, Seppo A, Penttilä L, Vilkman A. Renkonen O, et al. Among authors: leppanen a. Glycoconj J. 1991 Aug;8(4):368-75. doi: 10.1007/BF00731350. Glycoconj J. 1991. PMID: 1841678

10

Single mid-chain GlcNAc beta 1-6Gal beta 1-4R sequences of linear oligosaccharides are resistant to endo-beta-galactosidase of Bacteroides fragilis.

Renkonen O, Penttilä L, Niemelä R, Leppänen A. Renkonen O, et al. Among authors: leppanen a. Glycoconj J. 1991 Aug;8(4):376-80. doi: 10.1007/BF00731351. Glycoconj J. 1991. PMID: 1841679

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