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- | [[Image:1mkc.gif|left|200px]] | + | {{Seed}} |
| + | [[Image:1mkc.png|left|200px]] |
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| {{STRUCTURE_1mkc| PDB=1mkc | SCENE= }} | | {{STRUCTURE_1mkc| PDB=1mkc | SCENE= }} |
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- | '''C-TERMINAL DOMAIN OF MIDKINE'''
| + | ===C-TERMINAL DOMAIN OF MIDKINE=== |
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- | ==Overview==
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- | Midkine (MK) is a 13 kDa heparin-binding polypeptide which enhances neurite outgrowth, neuronal cell survival and plasminogen activator activity. MK is structurally divided into two domains, and most of the biological activities are located on the C-terminal domain. The solution structures of the two domains were determined by NMR. Both domains consist of three antiparallel beta-strands, but the C-terminal domain has a long flexible hairpin loop where a heparin-binding consensus sequence is located. Basic residues on the beta-sheet of the C-terminal domain form another heparin-binding site. Measurement of NMR signals in the presence of a heparin oligosaccharides verified that multiple amino acids in the two sites participated in heparin binding. The MK dimer has been shown to be the active form, giving signals to endothelial cells and probably to neuronal cells. We present a head-to-head dimer model of MK. The model was supported by the results of cross-linking experiments using transglutaminase. The dimer has a fused heparin-binding site at the dimer interface of the C-terminal domain, and the heparin-binding sites on MK fit the sulfate group clusters on heparin. These features are consistent with the proposed stronger heparin-binding activity and biological activity of the dimer.
| + | The line below this paragraph, {{ABSTRACT_PUBMED_9384573}}, adds the Publication Abstract to the page |
| + | (as it appears on PubMed at http://www.pubmed.gov), where 9384573 is the PubMed ID number. |
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| + | {{ABSTRACT_PUBMED_9384573}} |
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| ==About this Structure== | | ==About this Structure== |
- | 1MKC is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MKC OCA]. | + | 1MKC is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MKC OCA]. |
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| ==Reference== | | ==Reference== |
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| [[Category: Yoshida, K.]] | | [[Category: Yoshida, K.]] |
| [[Category: Heparin-binding growth factor]] | | [[Category: Heparin-binding growth factor]] |
- | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 01:17:13 2008'' | + | |
| + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jul 3 00:10:30 2008'' |
Revision as of 21:10, 2 July 2008
Template:STRUCTURE 1mkc
C-TERMINAL DOMAIN OF MIDKINE
Template:ABSTRACT PUBMED 9384573
About this Structure
1MKC is a Single protein structure. Full experimental information is available from OCA.
Reference
Solution structure of midkine, a new heparin-binding growth factor., Iwasaki W, Nagata K, Hatanaka H, Inui T, Kimura T, Muramatsu T, Yoshida K, Tasumi M, Inagaki F, EMBO J. 1997 Dec 1;16(23):6936-46. PMID:9384573
Page seeded by OCA on Thu Jul 3 00:10:30 2008
Categories: Single protein | Hatanaka, H. | Inagaki, F. | Inui, T. | Iwasaki, W. | Kimura, T. | Muramatsu, T. | Nagata, K. | Ogura, K. | Tasumi, M. | Yoshida, K. | Heparin-binding growth factor