Summary
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1.
Bradykinin (Bk; Arg1-Pro2-Pro3-Gly4-Phe5-Ser6-Pro7-Phe8-Arg8) inactivation by bulk isolated neurons from rat brain is described.
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2.
Bk is rapidly inactivated by neuronal perikarya (4.2 ± 0.6 fmol/min/cell body).
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3.
Sites of inactivating cleavages, determined by a kininase bioassay combined with a time-course Bk-product analysis, were the Phe5-Ser6, Pro7-Phe8, Gly4-Phe5, and Pro3-Gly4 peptide bonds. The cleavage of the Phe5-Ser6 bond inactivated Bk at least five fold faster than the other observed cleavages.
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4.
Inactivating peptidases were identified by the effect of inhibitors on Bk-product formation. The Phe5-Ser6 bond cleavage is attributed mainly to a calcium-activated thiol-endopeptidase, a predominantly soluble enzyme which did not behave as a metalloenzyme upon dialysis and was strongly inhibited byN-[1(R,S)-carboyx-2-phenylethyl]-Ala-Ala-Phe-p-aminobenzoate and endo-oligopeptidase A antiserum. Thus, neuronal perikarya thiol-endopeptidase seems to differ from endo-oligopeptidase A and endopeptidase 24.15.
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5.
Endopeptidase 24.11 cleaves Bk at the Gly4-Phe5 and, to a larger extent, at the Pro7-Phe8 bond. The latter bond is also cleaved by angiotensin-converting enzyme (ACE) and prolyl endopeptidase (PE). PE also hydrolyzes Bk at the Pro3-Gly4 bond.
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6.
Secondary processing of Bk inactivation products occurs by (1) a rapid cleavage of Ser6-Pro7-Phe8-Arg8 at the Pro7-Phe8 bond by endopeptidase 24.11, 3820ACE, and PE; (2) a bestatin-sensitive breakdown of Phe8-Arg9; and (3) conversion of Arg1-Pro7 to Arg1-Phe5, of Gly4-Arg9 to both Gly4-Pro7 and Ser6-Arg9, and of Phe5-Arg9 to Ser6-Arg9, Phe8-Arg9, and Ser6-Pro7, by unidentified peptidases.
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7.
A model for the enzymatic inactivation of bradykinin by rat brain neuronal perikarya is proposed.
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Abbreviations
- ACE:
-
angiotensin-I converting enzyme
- AMC:
-
7-amino-4-methyl-coumarin
- antiserum:
-
rat brain endo-oligopeptidase A antiserum
- Bk:
-
bradykinin cF,N-[1(R,S)-carboxy-2-phenylethyl]
- CNS:
-
central nervous system
- DFP:
-
diisopropylfluorophosphate
- DTT:
-
dithiothreitol
- MCA:
-
4-methyl-coumarinyl-7-amide
- MK 422:
-
N-[(S)-1-carboxy-3-phenylpropyl]-l-Ala-l-Pro
- Nsuc:
-
N-succinyl
- pAB:
-
p-aminobenzoate
- PCMB:
-
p-mercuribenzoate
- PE:
-
prolyl endopeptidase
- Z:
-
N-benzyloxycarbonyl
References
Acker, G. R., Molineaux, C., and Orlowski, M. (1987). Synaptosomal membrane-bound form of endopeptidase 24.15 generates Leuenkephalin from dynorphin 1-8,α- andβ-neoendorphin, and Met-enkephalin from Met-enkephalin-Arg6-Gly7-Leu8.J. Neurochem. 18284–292.
Almenoff, J., and Orlowski, M. (1983). Membrane-bound kidney neutral metalloendopeptidase: Interaction with synthetic substrates, natural peptides and inhibitors.Biochemistry 22590–599.
Andrews, P. C., Hines, C. M., and Dixon, J. E. (1983). Characterization of proline endopeptidase from rat brain.Biochemistry 19590–599.
Bensadoun, A., and Weinstein, D. (1976). Assay of proteins in the presence of interfering materials.Anal. Biochem. 70241–250.
Camargo, A. C. M., and Graeff, F. G. (1969). Subcellular distribution and properties of the bradykinin inactivation system in rabbit brain homogenates.Biochem. Pharmacol. 18548–549.
Camargo, A. C. M., Ramalho-Pinto, F. J., and Greene, L. J. (1972). Brain peptidases: Conversion and inactivation of kinin hormones.J. Neurochem. 1937–49.
Camargo, A. C. M., Shapanka, R., and Greene, L. J. (1973). Preparation, assay and partial characterization of a neutral endopeptidase from rabbit brain.Biochemistry 121838–1844.
Camargo, A. C. M., Martins, A. R., and Greene, L. J. (1979). Steric constraints make polypeptides resistant to hydrolysis by tissue peptidases. InLimited Proteolysis in Micro-organisms (G. N. Cohen and H. Holzer, Eds.), DEW Publication No. (NIH) 79-1591, U.S. Government Printing Office, Washington, D.C., pp. 45–48.
Camargo, A. C. M., Oliveira, E. B., Toffoletto, O., Metters, K. M., and Rossier, J. (1987). Brain endo-oligopeptidase A, a putative enkephalin converting enzyme.J. Neurochem. 481234–1239.
Carvalho, K. M., and Camargo, A. C. M. (1981). Purification of rabbit brain endo-oligopeptidases and preparation of anti-enzyme antibodies.Biochemistry 207082–7088.
Chao, J., Woodley, C., Chao, L., and Margolius, H. S. (1983). Identification of tissue kallikrein in brain and in the cell-free translation product encoded by brain mRNA.J. Biol. Chem. 25815173–15178.
Chu, T. G., and Orlowski, M. (1984). Active site directed N-carboxymethyl peptide inhibitors of a soluble metalloendopeptidase from rat brain.Biochemistry 233598–3603.
Correa, F. M. A., Innis, R. B., Uhl, G. R., and Snyder, S. H. (1979). Bradykinin-like immunoreactive neuronal systems localized histochemically in rat brain.Proc. Natl. Acad. Sci. USA 761489–1493.
Croft, D. N., and Luban, M. (1965). The estimation of deoxyribonucleic acid in the presence of sialic acid: Application to analysis of human gastric washings.Biochem. J. 95612–620.
DelBel, E. A., Gambarini, A. G., and Martins, A. R. (1986). Neuropeptide-metabolizing peptidases in Neuro-2a neuroblastoma and C6 glioma cells.J. Neurochem. 47938–944.
Dresdner, K., Barker, L. A., Orlowski, M., and Wilk, S. (1982). Subcellular distribution of prolyl endopeptidase and cation-sensitive neutral endopeptidase in rabbit brain.J. Neurochem. 381151–1154.
Folk, J. E., Piez, K. A., Carroll, W. R., and Gladner, J. A. (1960). Carboxypeptidase B. IV. Purification and characterization of the porcine enzyme.J. Biol. Chem. 2352272–2277.
Greene, L. J., Spadaro, A. C. C., Martins, A. R., Perussi de Jesus, W. D., and Camargo, A. C. M. (1982). Brain endo-oligopeptidase B: A post-proline cleaving enzyme that inactivates angiotensin I and II.Hypertension 4178–184.
Hersh, L. B. (1981). Immunological, physical and chemical evidence for the identity of brain and kidney post-proline cleaving enzyme.J. Neurochem. 37172–178.
Kariya, K., Yamauchi, A., Hattori, S., Tsuda, Y., and Okada, Y. (1982). The disappearance rate of intraventricular bradykinin in the brain of the conscious rat.Biochem. Biophys. Res. Commun. 1071461–1466.
Kariya, K., Yamauchi, A., and Sasaki, T. (1985). Regional distribution and characterization of kinin in the CNS of the rat.J. Neurochem. 441892–1897.
Kato, T., Nakano, T., Kojima, K., Nagatsu, T., and Sakakibara, S. (1980). Changes in prolyl endopeptidase during maturation of rat brain and hydrolysis of substance P by the purified enzyme.J. Neurochem. 35527–535.
Lowry, O. H., Rosebrough, N. J., Farr, A. L., and Randall, R. J. (1951). Protein measurement with the Folin phenol reagent.J. Biol. Chem. 193265–275.
Lynch, D. R., and Snyder, S. H. (1986). Neuropeptides: Multiple molecular forms, metabolic pathways, and receptors.Annu. Rev. Biochem. 55773–799.
Martins, A. R., and De Mello, F. G. (1985). Screening for neuropeptide metabolizing peptidases during the differentiation of chick embryo retina.Dev. Brain Res. 21147–151.
Martins, A. R., Caldo, H., Coelho, H. L. L., Moreira, A. C., Antunes-Rodrigues, J., Greene, L. J., and Camargo, A. C. M. (1980). Screening for rabbit brain neuropeptide-metabolizing peptidases. Inhibition of endopeptidase B by bradykinin potentiating peptide 9a (SQ 20881).J.Neurochem. 34100–107.
Martins, A. R., Izumi, C., Pretel, H. S., and De Mello, F. G. (1987). Ontogenesis of prolyl endopeptidase in the chick retina.Neurosci. Lett. 8889–94.
Matsas, R., Kenny, A. J., and Turner, A. J. (1984). The metabolism of neuropeptides.Biochem. J. 223433–440.
McDermott, J. R., Gibson, A. M., and Turner, J. D. (1987). Involvement of endopeptidase 24.15 in the inactivation of bradykinin by rat brain slices.Biochem. Biophys. Res. Commun. 146154–158.
McPhie, P. (1971). Dialysis. InMethods in Enzymology (S. P. Colowick and N. O. Kaplan, Eds), Academic Press, New York, Vol. 22, pp. 23–26.
Oliveira, E. B., Martins, A. R., and Camargo, A. C. M. (1976). Isolation of brain endopeptidases: Influence of size and sequence of substrates structurally related to bradykinin.Biochemistry 151967–1974.
Orlowski, M. (1983). Pituitary endopeptidases.Mol. Cell. Biochem. 5249–74.
Orlowski, M., Wilk, E., Pearce, S., and Wilk, S. (1979). Purification and properties of a prolyl endopeptidase from rabbit brain.J. Neurochem. 33461–469.
Orlowski, M., Michaud, C., and Chu, T. G. (1983). A soluble metalloendopeptidase from rat brain. Purification of the enzyme and determination of specificity with synthetic and natural peptides.Eur. J. Biochem. 13581–88.
Patchett, A. A., Harris, E., Tristam, E. W., Wyvrat, M. J., Wu, M. T., Taub, D., Peterson, E. R., Ikeler, T. J., tenBroeke, J., Payne, L.-G., Ondeyka, D. L., Thorsett, E. D., Greenlee, W. J., Lohr, N. S., Hoffsommer, R. D., Joshua, H., Ruyle, W. V., Rothrock, J. W., Aster, S. D., Maycock, A. L., Robinson, F. M., Hirschmman, R., Sweet, C. S., Ulm, E. H., Gross, D. M., Vassil, T. C., and Stone, C. A. (1980). A new class of angiotensin-converting enzyme inhibitors.Nature 288280–283.
Perry, D. C., and Snyder, S. H. (1984). Identification of bradykinin in mammalian brain.J. Neurochem. 431072–1080.
Sellinger, O. Z., Azcurra, J. M., Johnson, E., Ohlsson, W. G., and Lodin, Z. (1971). Independence of protein synthesis and drug uptake in nerve cell bodies and glial cells isolated by a new technique.Nature (New Biol.) 130253–256.
Shikimi, T., Kema, R., Matsumoto, M., Yamahata, Y., and Miyata, S. (1973). Studies on kinin like-substances in the brain.Biochem. Pharmacol. 22567–573.
Snyder, S. H. (1980). Brain peptides as neurotransmitters.Science 209976–983.
Soffer, R. L. (1981). Angiotensin-converting enzyme. InBiochemical Regulation of Blood Pressure (R. L. Soffer, Ed.), John Wiley & Sons, New York, pp. 123–164.
Spackman, D. H., Stein, W. H., and Moore, S. (1958). Automatic recording apparatus for use in chromatography of amino acids.Anal. Chem. 301190–1206.
Suzuki, K., Abiko, T., Endo, N., Kameyama, T., Sasaki, K., and Nabeshima, J. (1969). Biologically active synthetic fragments of bradykinin.Jpn. J. Pharmacol. 19325–327.
Toffoletto, O., Metters, K. M., Oliveira, E. B., Camargo, A. C. M., and Rossier, J. (1988). Enkephalin is liberated from metorphamide and dynorphin A1-8 by endo-oligopeptidase A but not by metalloendopeptidase E. C. 3.4.24.15.Biochem. J. 25335–38.
Turner, A. J., Matsas, R., and Kenny, A. J. (1985). Are there neuropeptide-specific peptidases?Biochem. Pharmacol. 341347–1356.
Vallee, B. L., Rupley, J. A., Coombs, T. L., and Neurath, H. (1960). The role of zinc in carboxipeptidase.J. Biol. Chem. 23564–69.
White, J. D., Stewart, K. D., Krause, J. E., and Mckelvy, J. F. (1985). Biochemistry of peptide-secreting neurons.Physiol. Rev. 65553–605.
Wilk, S. (1983). Prolyl endopeptidase.Life Sci. 332149–2157.
Wilk, S., and Orlowski, M. (1980). Cation-sensitive neutral endopeptidase: Isolation and specificity of the bovine pituitary enzyme.J. Neurochem. 351172–1182.
Wilk, S., and Orlowski, M. (1983). Inhibition of rabbit brain prolyl endopeptidase by N-benzyloxycarbonyl-prolyl-prolinal, a transition state aldehyde inhibitor.J. Neurochem. 4169–75.
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DelBel, E.A., Padovan, A.P., Padovan, G.J. et al. Enzymatic inactivation of bradykinin by rat brain neuronal perikarya. Cell Mol Neurobiol 9, 379–400 (1989). https://doi.org/10.1007/BF00711417
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DOI: https://doi.org/10.1007/BF00711417