Identification of a cellulose synthase-associated protein required for cellulose biosynthesis.
Cellulose synthase-interactive protein 1 (CSI1) was identified in a two-hybrid screen for proteins that interact with cellulose synthase (CESA) isoforms involved in primary plant cell wall synthesis. CSI1 encodes a 2,150-amino acid protein that contains 10 predicted Armadillo repeats and a C2 domain. Mutations in CSI1 cause defective cell elongation in hypocotyls and roots and reduce cellulose content. CSI1 is associated with CESA complexes, and csi1 mutants affect the distribution and movement of CESA complexes in the plasma membrane.
Gu
Ying
Y
Energy Biosciences Institute, University of California, Berkeley, CA 94720, USA.
Kaplinsky
Nick
N
Bringmann
Martin
M
Cobb
Alex
A
Carroll
Andrew
A
Sampathkumar
Arun
A
Baskin
Tobias I
TI
Persson
Staffan
S
Somerville
Chris R
CR
D017360:Arabidopsis / Q000166:cytology / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000737:chemistry / Q000378:metabolism*; D002352:Carrier Proteins / Q000737:chemistry / Q000378:metabolism*; D049109:Cell Proliferation; D002482:Cellulose / Q000096:biosynthesis*; D005964:Glucosyltransferases / Q000378:metabolism*; D018546:Hypocotyl / Q000254:growth & development; D020894:Microfibrils / Q000378:metabolism; D009154:Mutation / Q000235:genetics; D021381:Protein Transport; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D020449:Repetitive Sequences, Amino Acid
D029681:Arabidopsis Proteins; C551801:CSI1 protein, Arabidopsis; D002352:Carrier Proteins; D011993:Recombinant Fusion Proteins; D002482:Cellulose; D005964:Glucosyltransferases; C478648:cellulose synthase