Punctin, a novel ADAMTS-like molecule, ADAMTSL-1, in extracellular matrix

Satoshi Hirohata, Lauren W. Wang, Masaru Miyagi, Lin Yan, Michael F Seldin, Douglas R. Keene, John W. Crabb, Suneel S. Apte

Research output: Contribution to journalArticle

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Abstract

Punctin (ADAMTSL-1) is a secreted molecule resembling members of the ADAMTS family of proteases. Punctin lacks the pro-metalloprotease and the disintegrin-like domain typical of this family but contains other ADAMTS domains in precise order including four thrombospondin type I repeats. Punctin is the product of a distinct gene on human chromosome 9p21-22 and mouse chromosome 4 that is expressed in adult skeletal muscle. His-tagged punctin expressed in stably transfected High-Five™ insect cells was purified to apparent homogeneity by Ni-chromatography of conditioned medium. The NH2 terminus is not blocked and has the sequence EEDRD and so forth as determined by Edman degradation, demonstrating signal peptidase processing. Recombinant epitope-tagged punctin has a calculated mass of 59,991 Da but exhibits major molecular species of 61970 ± 6 Da and 62131 ± 5 Da as measured by liquid chromatography electrospray mass spectrometry. Punctin is a glycoprotein based on carbohydrate staining and liquid chromatography electrospray mass spectrometry glycopeptide analysis. Glycosylation occurs at a single N-linked site as demonstrated by altered electrophoretic migration of punctin expressed in the presence of tunicamycin A. Punctin contains disulfide bonds based on antibody accessibility and electrophoretic migration under reducing versus nonreducing conditions. Rotary shadowing demonstrates that punctin is hatchet-shaped having a globular region attached to a short stem. In transfected COS-1 cells, punctin is deposited in the cell substratum in a punctate fashion and is excluded from focal contacts. Punctin is the first member of a novel family of ADAMTS-like proteins that may have important functions in the extracellular matrix.

Original languageEnglish (US)
Pages (from-to)12182-12189
Number of pages8
JournalJournal of Biological Chemistry
Volume277
Issue number14
DOIs
StatePublished - Apr 5 2002

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Liquid chromatography
Chromosomes
Liquid Chromatography
Extracellular Matrix
Mass spectrometry
Mass Spectrometry
Glycosylation
Thrombospondins
Disintegrins
Chromosomes, Human, Pair 22
Tunicamycin
Chromosomes, Human, Pair 4
Molecules
Focal Adhesions
Glycopeptides
COS Cells
Human Chromosomes
Metalloproteases
Conditioned Culture Medium
Chromatography

ASJC Scopus subject areas

  • Biochemistry

Cite this

Hirohata, S., Wang, L. W., Miyagi, M., Yan, L., Seldin, M. F., Keene, D. R., ... Apte, S. S. (2002). Punctin, a novel ADAMTS-like molecule, ADAMTSL-1, in extracellular matrix. Journal of Biological Chemistry, 277(14), 12182-12189. https://doi.org/10.1074/jbc.M109665200

Punctin, a novel ADAMTS-like molecule, ADAMTSL-1, in extracellular matrix. / Hirohata, Satoshi; Wang, Lauren W.; Miyagi, Masaru; Yan, Lin; Seldin, Michael F; Keene, Douglas R.; Crabb, John W.; Apte, Suneel S.

In: Journal of Biological Chemistry, Vol. 277, No. 14, 05.04.2002, p. 12182-12189.

Research output: Contribution to journalArticle

Hirohata, S, Wang, LW, Miyagi, M, Yan, L, Seldin, MF, Keene, DR, Crabb, JW & Apte, SS 2002, 'Punctin, a novel ADAMTS-like molecule, ADAMTSL-1, in extracellular matrix', Journal of Biological Chemistry, vol. 277, no. 14, pp. 12182-12189. https://doi.org/10.1074/jbc.M109665200
Hirohata, Satoshi ; Wang, Lauren W. ; Miyagi, Masaru ; Yan, Lin ; Seldin, Michael F ; Keene, Douglas R. ; Crabb, John W. ; Apte, Suneel S. / Punctin, a novel ADAMTS-like molecule, ADAMTSL-1, in extracellular matrix. In: Journal of Biological Chemistry. 2002 ; Vol. 277, No. 14. pp. 12182-12189.
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