InterPro domain: IPR029983

Trichome birefringence-like (TBL) proteins are proposed to encode wall poly-saccharide specific O-acetyltransferases based on the existing data for some members of the TBL family: altered xyloglucan 4 (AXY4/TBL270) and altered xyloglucan 4-like (AXY4L/TBL22), two xyloglucan specific O-acetyltransferases in non-seed tissues and seeds, respectively [ 1 , 2 ].

TBL17 is also known as protein YLS7 (yellow-leaf-specific gene 7) as it is up-regulated in leaves during natural senescence [ 3 ].

1. O-acetylation of Arabidopsis hemicellulose xyloglucan requires AXY4 or AXY4L, proteins with a TBL and DUF231 domain. Plant Cell 23, 4041-53
2. Involvement of TBL/DUF231 proteins into cell wall biology. Plant Signal Behav 5, 1057-9
3. Isolation and RNA gel blot analysis of genes that could serve as potential molecular markers for leaf senescence in Arabidopsis thaliana. Plant Cell Physiol. 42, 170-8