InterPro domain: IPR029962

Trichome birefringence-like (TBL) is a plant protein family. In Arabidopsis this family includes 46 members (TBR, TBL1-45) [ 1 ]. The TBL family is proposed to encode wall polysaccharide specific O-acetyltransferases [ 2 , 3 ]. They contain a TBL domain with a conserved glycine-aspartate-serine (GDS) signature, similar to the conserved motif (GDSL) found in some esterases/lipases [ 4 , 4 ]. Members of the TBL protein family had been shown to impact pathogen resistance, freezing tolerance, and cellulose biosynthesis [ 5 ].

1. TRICHOME BIREFRINGENCE and its homolog AT5G01360 encode plant-specific DUF231 proteins required for cellulose biosynthesis in Arabidopsis. Plant Physiol. 153, 590-602
2. O-acetylation of Arabidopsis hemicellulose xyloglucan requires AXY4 or AXY4L, proteins with a TBL and DUF231 domain. Plant Cell 23, 4041-53
3. O-acetylation of plant cell wall polysaccharides. Front Plant Sci 3, 12
4. Involvement of TBL/DUF231 proteins into cell wall biology. Plant Signal Behav 5, 1057-9