Protein
Mannan endo-1,4-beta-mannosidase B
Organism
Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139)
Function
Endo-1,4-mannanase that catalyzes the random hydrolysis of (1->4)-beta-D-mannosidic linkages in mannans and heteromannans. It is a crucial enzyme for depolymerization of seed galactomannans and wood galactoglucomannans. Active against locust bean gum and gum guar (PubMed:16844780). Also has efficient transglycosylation activity. Produces mainly mannopentaose and mannoheptaose out of mannotetraose. May even prefer sugars as acceptors instead of water (PubMed:24950755).
Similarity
Belongs to the glycosyl hydrolase 5 (cellulase A) family.
Sequence
MRLIHAVLGLLAGAAPALVAASPAAPIGNGRDQVSKAVGRHFEIDGKVQYFAGTNCWWLGNLLNDFEVELAVSQIAETGYKVVRTWGFFGVNDPSNPGQPVYYQVLNESLYEGGLGINYGSNGIRRLDTVVSLAERYDIQLVLTFMNNWNDFGGINIYSNAFGSNATTWYTDKKSQRAYREYIKFIVNRYKGSSAIFAWELGNEPRCKGCDPSVIYNWAKSVSAYIKKLDKKHMVALGDEGWLCPPEGDGTYAYDCSEGVDFVKNLEIETLDYGTFHLYPESWGYNYSWGSEWVLQHDAIGKRFNKPVVFEEYGTPLNHTQLERPWQLTTVKETQVAADFIWQFGTVLPVEGTEWGDVNSIYYGTEEYEVLAVQHAWEMARKKVPRH