NOVEL THERMOSTABLE COLLAGEN-DECOMPOSING ENZYME, NOVEL MICROORGANISM PRODUCING THE ENZYME AND PROCESS FOR PRODUCING THE ENZYME
Bacillus sp. NTAP-1 having been deposited under accession number FERM BP-6926
and a collagen-decomposing enzyme produced by bacterium. The above enzyme (1) has a capability of hydrolyzing, at the highest efficiency, collagen and gelatin from among casein, gelatin, albumin and collagen
(2) shows the optimum pH of 3.5 to 4.5
(3) shows the optimum temperature of 65 to 70 DEG C
(4) after heating at 60 DEG C at pH 6.0 for 4 hours, sustains an activity amounting to 60% or more of the level before the heat treatment
(5) remains stable at pH 3 to 6
and a molecular weight of approximately 46,000 when measured by SDS-PAGE.