摘要:
The invention relates to endothelin-converting enzymes containing the polypeptide sequence described in SEQ. ID. NO. 30 or SEQ. ID. NO. 36 or functional fragments thereof, genes which code for such enzymes, and processes for producing the said enzymes and the use thereof.
摘要:
Endothelin converting enzymes of mammalian cell origin or mammalian blood origin are disclosed, which have the activity of converting big endothelin to endothelin and a hydrated density of up to about 0.94 g/ml, about 0.94 g/ml to about 1.006 g/ml, about 1.006 g/ml to about 1.063 g/ml and about 1.063 g/ml to about 1.210 g/ml. A process for preparing the enzymes from mammalian cells and mammalian blood by centrifugation or gel filtration process is also disclosed.
摘要:
Endothelin converting enzymes of mammalian cell origin or mammalian blood origin are disclosed, which have the activity of converting big endothelin to endothelin and a hydrated density of up to about 0.94 g/ml, about 0.94 g/ml to about 1.006 g/ml, about 1.006 g/ml to about 1.063 g/ml and about 1.063 g/ml to about 1.210 g/ml. A process for preparing the enzymes from mammalian cells and mammalian blood by centrifugation or gel filtration process is also disclosed.
摘要:
The use of apolipoprotein B as an endothelin converting enzyme. Apolipoprotein B itself has endothelin-converting enzyme activity and is useful for screening an inhibitor against the endothelin converting enzyme.
摘要:
Endothelin converting enzymes of human blood origin or human cells origin are disclosed, which have the following properties:
(1) Action: being capable of converting big endothelin to endothelin; (2) Substrate specificity: acting on big endothelin-1, big endothelin-2, or big endothelin-3; (3) Optimum pH: pH 6.5-7.5; (4) Molecular weight: about 5.4 x 10⁵ as measured on gel-filtration using a column of crosslinked agarose gel bead (exclusion limit 5 x 10⁶ Daltons); (5) Inhibitors: inhibited by ethylenediaminetetraacetate (EDTA), phosphoramidon, thiorphan, phenylmethanesulfonyl fluoride (PMSF), and chymostatin; (6) Hydrated density: not greater than about 1.210 g/ml; (7) Formation of precipitate: precipitation by adding 0.65% dextran sulfate (M.W. 500,000) and 0.2 M manganese chloride; (8) Influence of oxidation: inactivated by oxidation by copper ion.
摘要:
Human lung endothelin converting enzyme has been isolated in nearly homogeniously pure form. The enzyme is a zinc containing neutral metalloproteinase which is strongly inhibited by phosphoramidon. The enzyme has a subunit mass of about 100 kda and apparent masses of about 232 and 440 kda by gel filtration.
摘要:
L'enzyme de conversion de l'endothéline pulmonaire humaine a été isolée sous un formee d'une pureté presque homogène. L'enzyme est une métalloprotéinase neutre contenant du zinc qui est fortement inhibée par le phosphoramidon. L'enzyme possède une masse sous-unitaire d'environ 100 kda et des masses apparentes d'environ 232 et 400 kda par filtration sur gel.