Limulus clotting factor B

Limulus clotting factor B (EC 3.4.21.85) is an enzyme.^[1] This enzyme catalyses the following chemical reaction

Selective cleavage of -Arg98-Ile- bond in limulus proclotting enzyme to form active clotting enzyme

Limulus clotting factor B
Identifiers
EC no.	3.4.21.85
CAS no.	848851-53-6
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

From the hemocyte granules of the horseshoe crabs Limulus and Tachypleus. This enzyme is downstream of Limulus clotting factor C, but upstream of Limulus clotting enzyme.^[2]