Work

Molecular Characterization of a Zygote Wall Protein: An Extensin-Like Molecule in Chlamydomonas reinhardtii

Year: 1989

Type: article

Abstract: The green alga Chlamydomonas reinhardtii elaborates two biochemically and morphologically distinct cell walls during its life cycle: one surrounds the vegetative and gametic cell and the other encompasses the zygote. Hydroxyproline-rich glycoproteins (HRGPs) constitute a major component of both walls. We describe the isolation and characterization of a zygote-specific gene encoding a wall HRGP. The derived amino acid sequence of this algal HRGP is similar to those of higher plant extensins, rich in proline and serine residues and possessing repeating amino acid motifs, notably X(Pro)3 and (Ser-Pro)n. Antiserum against this zygote wall protein detected common epitopes in several other zygote polypeptides, at least one of which is also encoded by a zygote-specific gene. We conclude that there is one set of HRGP wall genes expressed only in zygotes and another set that is specific to vegetative and gametic cells.

Source: The Plant Cell

DOI: 10.1105/tpc.1.9.901

Authors: J P Woessner, U W Goodenough

Institution: Washington University in St. Louis

Language: English

Topic: Polysaccharides and Plant Cell Walls

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: bronze

Funders: American Cancer Society, U.S. Department of Agriculture

OpenAlex ID: W2102815558