PMID- 24018663 OWN - NLM STAT- MEDLINE DCOM- 20140422 LR - 20130925 IS - 1347-6947 (Electronic) IS - 0916-8451 (Linking) VI - 77 IP - 9 DP - 2013 TI - Purification and characterization of UDP-arabinopyranose mutase from Chlamydomonas reinhardtii. PG - 1874-8 AB - Chlamydomonas reinhardtii cells are surrounded by a mixture of hydroxyprolin-rich glycoproteins consisting of L-arabinose, D-galactose, D-glucose, and D-mannose residues. The L-arabinose residue is thought to be attached by a transfer of UDP-L-arabinofuranose (UDP-Araf), which is produced from UDP-L-arabinopyranose (UDP-Arap) by UDP-arabinopyranose mutase (UAM). UAM was purified from the cytosol to determine the involvement of C. reinhardtii UAM (CrUAM) in glycoprotein synthesis. CrUAM was purified 94-fold to electrophoretic homogeneity by hydrophobic and size-exclusion chromatography. CrUAM catalyzed the reversible conversion between UDP-Arap and UDP-Araf and exhibited autoglycosylation activity when UDP-D-[(14)C]glucose was added as substrate. Compared to the properties of native and recombinant CrUAM overexpressed in Escherichia coli, native CrUAM showed a higher affinity for UDP-Arap than recombinant CrUAM did. This increased affinity for UDP-Arap might have been caused by post-translational modifications that occur in eukaryotes but not in prokaryotes. FAU - Kotani, Ayana AU - Kotani A AD - Faculty of Agriculture, University of the Ryukyus. FAU - Tsuji, Maki AU - Tsuji M FAU - Azama, Yasushi AU - Azama Y FAU - Ishii, Tadashi AU - Ishii T FAU - Takeda, Takumi AU - Takeda T FAU - Yamashita, Tetsuro AU - Yamashita T FAU - Shimojima, Mie AU - Shimojima M FAU - Konishi, Teruko AU - Konishi T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130907 PL - England TA - Biosci Biotechnol Biochem JT - Bioscience, biotechnology, and biochemistry JID - 9205717 RN - 0 (Recombinant Proteins) RN - 0 (Uridine Diphosphate Sugars) RN - 14697-41-7 (uridine diphosphate arabinose) RN - EC 5.4.- (Intramolecular Transferases) SB - IM MH - Chlamydomonas reinhardtii/cytology/*enzymology MH - Intramolecular Transferases/genetics/*isolation & purification/*metabolism MH - Kinetics MH - Recombinant Proteins/genetics/isolation & purification/metabolism MH - Substrate Specificity MH - Uridine Diphosphate Sugars/*metabolism EDAT- 2013/09/11 06:00 MHDA- 2014/04/23 06:00 CRDT- 2013/09/11 06:00 PHST- 2013/09/11 06:00 [entrez] PHST- 2013/09/11 06:00 [pubmed] PHST- 2014/04/23 06:00 [medline] AID - DN/JST.JSTAGE/bbb/130302 [pii] AID - 10.1271/bbb.130302 [doi] PST - ppublish SO - Biosci Biotechnol Biochem. 2013;77(9):1874-8. doi: 10.1271/bbb.130302. Epub 2013 Sep 7.