Encodes a protein with xylosyltransferase activity, which is specific for UDP-xylose as donor substrate and for oligosaccharides with a degree of polymerization >4. Although the enzyme utilizes either cellopentaose or cellohexaose, its activity is four-fold higher with cellohexaose as an acceptor compared to cellopentaose. The enzyme is able to add several xylosyl residues to the acceptor forming mono-, di- and trixylosylated polysaccharides.
Computational Description
UDP-xylosyltransferase 2 (XT2); FUNCTIONS IN: xyloglucan 6-xylosyltransferase activity, UDP-xylosyltransferase activity, transferase activity, transferring glycosyl groups, transferase activity; INVOLVED IN: polysaccharide biosynthetic process, xyloglucan biosynthetic process, root hair elongation; LOCATED IN: mitochondrion, integral to membrane; EXPRESSED IN: 22 plant structures; EXPRESSED DURING: 13 growth stages; CONTAINS InterPro DOMAIN/s: Galactosyl transferase (InterPro:IPR008630); BEST Arabidopsis thaliana protein match is: xylosyltransferase 1 (TAIR:AT3G62720.2); Has 461 Blast hits to 460 proteins in 94 species: Archae - 0; Bacteria - 6; Metazoa - 0; Fungi - 152; Plants - 284; Viruses - 0; Other Eukaryotes - 19 (source: NCBI BLink).
translocon at the outer envelope membrane of chloroplasts 159
Curator Summary
An integral membrane GTPase that functions as a transit-sequence receptor required for the import of proteins necessary for chloroplast biogenesis. Located in the outer chloroplast membrane. Phosphorylation of the G-domains regulate translocon assembly.
Computational Description
translocon at the outer envelope membrane of chloroplasts 159 (TOC159); FUNCTIONS IN: transmembrane receptor activity, GTPase activity; INVOLVED IN: protein targeting to chloroplast; LOCATED IN: chloroplast outer membrane, cytosol, chloroplast, membrane, chloroplast envelope; EXPRESSED IN: 26 plant structures; EXPRESSED DURING: 13 growth stages; CONTAINS InterPro DOMAIN/s: Chloroplast protein import component Toc86/159 (InterPro:IPR005690), AIG1 (InterPro:IPR006703); BEST Arabidopsis thaliana protein match is: multimeric translocon complex in the outer envelope membrane 132 (TAIR:AT2G16640.1); Has 20720 Blast hits to 13966 proteins in 1613 species: Archae - 439; Bacteria - 5942; Metazoa - 6041; Fungi - 2379; Plants - 1534; Viruses - 151; Other Eukaryotes - 4234 (source: NCBI BLink).
