An extremely hydroxyproline‐rich glycoprotein is expressed in inverting Volvox embryos

FEBS Letters

Lottspeich, Friedrich¹  Sumper, Manfred²  Wenzl, Stephan²  Schlipfenbacher, Reiner² 

[1] Max-Planck-Institut für Biochemie, Am Klopferspitz, 8033 Martinsried, FRG;Lehrstuhl für Biochemie I, Universität Regensburg, Universitätsstr. 31, 8400 RegensburgFRG

关键词: (Volvox) Inversion Arabinogalactan Hydroxyproline-rich glycoprotein Methyl sugar;   

DOI  :  10.1016/0014-5793(86)81084-5

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

A sulphated glycoprotein, denoted I-SG, has previously been shown to be synthesized in Volvox under developmental control [(1982) FEBS Lett. 143, 311-315]. It is demonstrated that I-SG synthesis is restricted to a period during embryonic inversion as short as 10 min (out of the 48 h life cycle). This glycoprotein was purified and chemically characterized. 62% of its amino acid residues are hydroxyproline. Clusters of hydroxyproline residues were found to occur in its polypeptide chain. Besides arabinose and galactose, 3-O-methylgalactose and 6-O-methylgalactose were identified as constituents of I-SG.

【 授权许可】

Unknown