Identification, expression, and tissue distribution of the three rat lysyl hydroxylase isoforms

D K Mercer, Phyllis Nicol, C Kimbembe, Simon Robins

Research output: Contribution to journalArticle

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Abstract

Lysyl hydroxylases (LH) (procollagen-lysine 2-oxoglutarate 5-dioxygenase; PLOD) catalyse the hydroxylation of lysine residues during the post-translational modification of collagenous proteins. In this paper, we describe the first identification and cloning of LH isoforms 2 and 3 from the rat, including both LH2 splice variants (LH2a and LH2b). The rat LHs are expressed in almost all tissue and cell types examined, indicating a probable lack of tissue specificity for LH function. All LH isoforms were stably transfected into CHO-K1 cells and this represents the first example of recombinant LH production in a eukaryotic cell line. Expression and production of all LH isoforms led to an increase in total collagen synthesis. LH1 and LH2a expression and production led to an increase in total pyridinium cross-link production. Evidence that LH2a possesses telopeptide lysyl hydroxylase activity, previously thought to be a novel enzyme, is presented. (C) 2003 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)803-809
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume307
Issue number4
Early online date4 Jul 2003
DOIs
Publication statusPublished - 8 Aug 2003

Keywords

  • lysyl hydroxylase
  • procollagen-lysine 2-oxoglutarate 5-dioxygenase
  • collagen biosynthesis
  • telopeptide
  • lysine
  • hydroxylysine
  • SYNDROME TYPE-VI
  • BACULOVIRUS SYSTEM
  • CATALYTIC-ACTIVITY
  • MOLECULAR-CLONING
  • MESSENGER-RNA
  • CROSS-LINKING
  • IN-VITRO
  • COLLAGEN
  • GENE
  • GLUCOSYLTRANSFERASE
  • Lysyl hydroxylase
  • Procollagen-lysine 2-oxoglutarate 5-dioxygenase
  • Collagen biosynthesis
  • Telopeptide
  • Lysine
  • Hydroxylysine

Cite this

Identification, expression, and tissue distribution of the three rat lysyl hydroxylase isoforms. / Mercer, D K ; Nicol, Phyllis; Kimbembe, C ; Robins, Simon.

In: Biochemical and Biophysical Research Communications, Vol. 307, No. 4, 08.08.2003, p. 803-809.

Research output: Contribution to journalArticle

Mercer, D K ; Nicol, Phyllis ; Kimbembe, C ; Robins, Simon. / Identification, expression, and tissue distribution of the three rat lysyl hydroxylase isoforms. In: Biochemical and Biophysical Research Communications. 2003 ; Vol. 307, No. 4. pp. 803-809.
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