Title
Characterization of four substrates emphasizes kinetic similarity between insect and human C-domain angiotensin-converting enzyme Characterization of four substrates emphasizes kinetic similarity between insect and human C-domain angiotensin-converting enzyme
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Berlin ,
Subject
Chemistry
Biology
Source (journal)
European journal of biochemistry. - Berlin
Volume/pages
269(2002) :14 , p. 3522-3530
ISSN
0014-2956
ISI
000176920600021
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Angiotensin converting enzyme (ACE) was already discovered in insects in 1994, but its physiological role is still enigmatic. We have addressed this problem by purifying four new ACE substrates from the ovaries of the grey fleshfly, Neobellieria bullata . Their primary structures were identified as NKLKPSQWISLSD (Neb -ODAIF- 1(1-13) ), NKLKPSQWI (Neb -ODAIF- 1(1-9) ), SLKPSNWLTPSE (Neb -ODAIF- 2) and LEQIYHL. Database analysis showed significant homology with amino acid sequence stretches as present in the N-terminal part of several fly yolk proteins. An antiserum raised against Neb -ODAIF-1(1-9) immunostained one out of three yolk protein bands of SDS/PAGE-separated fly haemolymph and egg homogenate, thus confirming that these peptides originate from a yolk protein gene product. Kinetic analysis of these peptides and of the peptides Neb -ODAIF and Neb -ODAIF- 1(1-7) with insect ACE and human ACE show both similar and unique properties for insect ACE as compared with human C-domain ACE.
E-info
https://repository.uantwerpen.be/docman/iruaauth/77b652/5399671.pdf
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