Cross-Linking of Soluble Extensin in Isolated Cell Walls
نویسندگان
چکیده
منابع مشابه
Cross-linking patterns in salt-extractable extensin from carrot cell walls.
Extensins are hydroxyproline-rich glycoproteins (HRGPs) found in the primary cell walls of dicots. Extensin monomers are secreted into the wall and covalently bound to each other, presumably by isodityrosine (IDT) cross-links, to form a rigid matrix. Expression of the extensin matrix is correlated with inhibition of cell elongation during normal development and with increased resistance to viru...
متن کاملFerulate Cross-linking in Cell Walls Isolated from Maize Cell Suspensions
-Cross-linking of arabinoxylans by ferulate dehydrodimers and incorporation of feruloylated arabinoxylans into lignin were modelled with maize walls (Zea mays cv Black Mexican) containing 5.3-18.0 mg g~ of total ferulates. The proportion of dehydrodimers to total ferulates increased from ca 20 to 45% when dilute hydrogen peroxide was added to walls containing bound peroxidase. About 45% of the ...
متن کاملIsodityrosine cross-linking mediates insolubilization of cell walls in Chlamydomonas.
Enzymatic removal of the cell wall induces vegetative Chlamydomonas reinhardtii cells to transcribe wall genes and synthesize new hydroxyproline-rich glycoproteins (HRGPs) related to the extensins found in higher plant cell walls. A cDNA expression library made from such induced cells was screened with antibodies to an oligopeptide containing the (SP)x repetitive domains found in Chlamydomonas ...
متن کاملlsodityrosine Cross-Linking Mediates lnsolubilization of Cell Walls in Chlamydomonas
Enzymatic removal of the cell wall induces vegetative Chlamydomonas relnhardtli cells to transcrlbe wall genes and synthesire new hydroxyproline-rich glycoproteins (HRGPs) related to the extensins found in higher plant cell walls. A cDNA expression library made from such induced cells was screened with antibodies to an ollgopeptide containing the (SP), repetitive domains found in Chlamydomonas ...
متن کاملSolubilization of covalently bound extensin from capsicum cell walls.
Acidified sodium chlorite cleaves isodityrosine and solubilizes covalently bound hydroxyproline-rich material from cell walls. This has been taken as evidence that isodityrosine acts as a cross-link holding the hydroxyproline-rich glycoprotein extensin in the cell wall. However, acidified chlorite was found to cleave peptide bonds in salt-soluble extensin and in bovine serum albumin (BSA). This...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1984
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.76.2.414