Cysteine or serine proteinase?

Alkaline serine proteinase from Thermomonospora

The serine proteinase isolated from Thermomonospora fusca YX shows considerable thermal stability up to 80 °C, and progressive inactivation occurs at higher temperatures. Lyotropic salts affected the thermal stability of the enzyme at 85 °C, suggesting that disruption of hydrophobic interactions play an important role in the decreased thermal stability of the enzyme above 80 'C. Thermal stabili...

Cysteine proteinase procoagulant from amnion-chorion.

Various coagulation abnormalities are associated with pregnancy. Several investigators have suggested that there may be a unique procoagulant associated with amniotic tissue and fluid. We identified a cysteine proteinase from malignant tissue, cancer procoagulant, and had reason to believe a similar proteinase may be present in amniotic tissue. Amniotic fluid and extracts of amnion-chorion were...

Processing of the lactococcal extracellular serine proteinase.

Activity of the lactococcal cell envelope-located serine proteinase depends on the presence of membrane-associated lipoprotein PrtM. To differentiate between the action of the proteinase and the action of PrtM in the process of proteinase maturation, an inactive form of the lactococcal proteinase was constructed. This was done by mutating one of the three amino acids thought to constitute the a...

Elastinolytic Serine Proteinase from Aspergillus flavus

NotePrimary Structure of a Cysteine Proteinase

elsewhere. Amino acid analysis of avocado cystatin was first done. The amino acid composition derived from protein hydrolysatc was Asp7,s, Thr4.7, Ser6.3, Gluis.3, Pro2,D, Gly4.s, Alas.7, Valne, Meto.s, Ilei.p, Leub.6, Tyr2.7, Phe4,i, Lysg.s, His2.o, Arg3.6. The N-terminal amino acids of avocado cystatin up to position 50 was sequenced, as shown in Fig, 1, by a gas-phase sequencer (Applied Bios...