This is a galactose-binding domain-like found at the C-terminal of alkaline mannanases, such as Swiss:Q4W8M3 from Bacillus sp. JAMB-602 [1] and related bacterial sequences which belong to the Glycoside Hydrolase Family 5 (Pfamm:PF00150).

1: Crystallization and preliminary X-ray study of alkaline mannanase from an alkaliphilic Bacillus isolate. Akita M, Takeda N, Hirasawa K, Sakai H, Kawamoto M, Yamamoto M, Grant WD, Hatada Y, Ito S, Horikoshi K; Acta Crystallogr D Biol Crystallogr. 2004;60:1490-1492. PMID:15272186