Recombinant Expression and Characterization of Dentin Matrix Protein 1

Dentin matrix protein 1 (DMP1) is an extracellular matrix noncollagenous protein (NCP) initially isolated from dentin and now found to be present in calcified tissues like calvaria and long bone. The characteristic feature of DMP1 is that it contains a large number of acidic domains and has properti...

Full description

Saved in:
Bibliographic Details
Published in:Connective tissue research 1999, Vol.40 (4), p.251-258
Main Authors: Srinivasan, Radhika, Chen, Bei, Gorski, Jeffrey P., George, Anne
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Animals
Blotting, Western
Cloning, Molecular
Dentin
Dentin matrix protein 1
Enzyme-Linked Immunosorbent Assay - methods
Extracellular Matrix Proteins
mineralization
Molecular Weight
Phosphoproteins - genetics
Phosphoproteins - immunology
Phosphoproteins - isolation & purification
Phosphoproteins - physiology
Rabbits
Rats
recombinant DMP1
Recombinant Fusion Proteins - genetics
Recombinant Fusion Proteins - immunology
Recombinant Fusion Proteins - isolation & purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dentin matrix protein 1 (DMP1) is an extracellular matrix noncollagenous protein (NCP) initially isolated from dentin and now found to be present in calcified tissues like calvaria and long bone. The characteristic feature of DMP1 is that it contains a large number of acidic domains and has properties which implicate it as a key participant in regulating matrix mineralization. The level of DMP1 in the tissue is sparse and it is not easily isolated from dentin because it copurifies with other dentin NCPs. The exact function of DMP1 is not known and this is due to the inherent difficulty of obtaining enough protein from the mineralized tissues. In order to understand the physiologic role for DMP1 during the formation of mineralized tissues we have produced milligram quantities of recombinant DMP1 in E. coli. The objective of this work was: (1) to prepare unmodified apoprotein so that it could be used for studying the function of DMP1; and (2) to prepare polyclonal antibody against the recombinant DMP1 antigen. The DMP1 polyclonal antibody did not cross-react with other NCPs present in dentin or with bone acidic glycoprotein-75 (BAG-75) present in the bone matrix, confirming the specificity of this antibody and thus making it a valuable tool to determine the in vivo function of DMP1.
ISSN:0300-8207
1607-8438
DOI:10.3109/03008209909000703