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thaumatin-like proteins: basidiomycete homologs This subfamily is represented by Lentinula edodes TLG1, a thaumatin-like protein (TLP), as well as, other basidiomycete homologs. In general, TLPs are involved in host defense and a wide range of developmental processes in fungi, plants, and animals. TLG1 TLP is involved in lentinan degradation and fruiting body senescence. TLG1 expressed in Escherichia coli and Aspergillus oryzae exhibited beta-1,3-glucanase activity and demonstrated lentinan degrading activity. TLG1 is proposed to be involved in lentinan and cell wall degradation during senescence following harvest and spore diffusion. TLPs are three-domain, crescent-fold structures with either an electronegative, electropositive, or neutral cleft occurring between domains I and II. TLG1 from Lentinula edodes contains the required acidic amino acids conserved in the appropriate positions to possess an electronegative cleft. TLPs within this subfamily contain 13 conserved Cys residues; the number of total Cys residues in these TLPs varies from 16 in L. edodes TLG1 to 18 in other basidiomycete homologs. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",