Known Activities	Modules of approx. 120 residues. Granular starch-binding function has been demonstrated in the case of Thermoactinomyces vulgaris R-47 α-amylase 1 (TVAI).
3D Structure Status	β-barrel
Note	Formerly known as X21 modules.
External resources	InterPro; PFAM;
Statistics	GenBank accession (480); Uniprot accession (171); PDB accession (31); 3D entries (5); cryst (0)