Description
Midkine (MK) and its functionally-related protein pleiotrophin are heparin-binding neurotrophic factors that signal through the same receptor, known as anaplastic lymphoma kinase (ALK). MK plays an important regulatory role in epithelial-mesenchymal interactions during fetal development and in postnatal lung development. MK chemoattracts embryonic neurons, neutrophils and macrophages, and exerts angiogenic, growth and survival activities during tumorgenesis. Recombinant Mouse Midkine is a 13.2 kDa protein containing 120 amino acid residues including five intra-molecular disulfide bonds.
Molecular Weight
Approximately 13.2 kDa.
AA sequence
VAKKKEKVKK GSECSEWTWG PCTPSSKDCG MGFREGTCGA QTQRVHCKVP CNWKKEFGAD CKYKFESWGA CDGSTGTKAR QGTLKKARYN AQCQETIRVT KPCTSKTKSK TKAKKGKGKD
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
> 96% by SDS-PAGE and HPLC analyses.
Biological Activity
The biological activity determined by a chemotaxis bioassay using human neutrophils is in a concentration range of 10-100 ng/ml. Fully biologically active when compared to standard.
Endotoxin
< 1.0 EU per 1μg of the protein
Formulation
Lyophilized from a 0.2 μm filtered concentrated solution in 2 × PBS, pH7.4.