Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity

Greg P. Bertenshaw, Benjamin E. Turk, Simon J. Hubbard, Gail L. Matters, John E. Bylander, Jacqueline M. Crisman, Lewis C. Cantley, Judith S. Bond

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Meprin A and B are highly regulated, secreted, and cell-surface metalloendopeptidases that are abundantly expressed in the kidney and intestine. Meprin oligomers consist of evolutionarily related α and/or β subunits. The work herein was carried out to identify bioactive peptides and proteins that are susceptible to hydrolysis by mouse meprins and kinetically characterize the hydrolysis. Gastrin-releasing peptide fragment 14-27 and gastrin 17, regulatory molecules of the gastrointestinal tract, were found to be the best peptide substrates for meprin A and B, respectively. Peptide libraries and a variety of naturally occurring peptides revealed that the meprin β subunit has a clear preference for acidic amino acids in the P1 and P1′ sites of substrates. The meprin α subunit selected for small (e.g. serine, alanine) or hydrophobic (e.g. phenylalanine) residues in the P1 and P1′ sites, and proline was the most preferred amino acid at the P2′ position. Thus, although the meprin α and β subunits share 55% amino acid identity within the protease domain and are normally localized at the same tissue cell surfaces, they have very different substrate and peptide bond specificities indicating different functions. Homology models of the mouse meprin α and β protease domains, based on the astacin crystal structure, revealed active site differences that can account for the marked differences in substrate specificity of the two subunits.

Original languageEnglish (US)
Pages (from-to)13248-13255
Number of pages8
JournalJournal of Biological Chemistry
Volume276
Issue number16
DOIs
StatePublished - Apr 20 2001

Fingerprint

meprin A
Tiopronin
Metalloproteases
Peptides
Substrates
Hydrolysis
Peptide Hydrolases
Metalloendopeptidases
Gastrin-Releasing Peptide
Acidic Amino Acids
Amino Acids
Peptide Library
Peptide Fragments
Substrate Specificity
Phenylalanine
Oligomers
Proline
Alanine
Serine
Intestines

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Bertenshaw, G. P., Turk, B. E., Hubbard, S. J., Matters, G. L., Bylander, J. E., Crisman, J. M., ... Bond, J. S. (2001). Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity. Journal of Biological Chemistry, 276(16), 13248-13255. https://doi.org/10.1074/jbc.M011414200
Bertenshaw, Greg P. ; Turk, Benjamin E. ; Hubbard, Simon J. ; Matters, Gail L. ; Bylander, John E. ; Crisman, Jacqueline M. ; Cantley, Lewis C. ; Bond, Judith S. / Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity. In: Journal of Biological Chemistry. 2001 ; Vol. 276, No. 16. pp. 13248-13255.
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Bertenshaw, GP, Turk, BE, Hubbard, SJ, Matters, GL, Bylander, JE, Crisman, JM, Cantley, LC & Bond, JS 2001, 'Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity', Journal of Biological Chemistry, vol. 276, no. 16, pp. 13248-13255. https://doi.org/10.1074/jbc.M011414200

Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity. / Bertenshaw, Greg P.; Turk, Benjamin E.; Hubbard, Simon J.; Matters, Gail L.; Bylander, John E.; Crisman, Jacqueline M.; Cantley, Lewis C.; Bond, Judith S.

In: Journal of Biological Chemistry, Vol. 276, No. 16, 20.04.2001, p. 13248-13255.

Research output: Contribution to journalArticle

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T1 - Marked Differences between Metalloproteases Meprin A and B in Substrate and Peptide Bond Specificity

AU - Bertenshaw, Greg P.

AU - Turk, Benjamin E.

AU - Hubbard, Simon J.

AU - Matters, Gail L.

AU - Bylander, John E.

AU - Crisman, Jacqueline M.

AU - Cantley, Lewis C.

AU - Bond, Judith S.

PY - 2001/4/20

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