1g91

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[[Image:1g91.jpg|left|200px]]
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{{STRUCTURE_1g91| PDB=1g91 | SCENE= }}
{{STRUCTURE_1g91| PDB=1g91 | SCENE= }}
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'''SOLUTION STRUCTURE OF MYELOID PROGENITOR INHIBITORY FACTOR-1 (MPIF-1)'''
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===SOLUTION STRUCTURE OF MYELOID PROGENITOR INHIBITORY FACTOR-1 (MPIF-1)===
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==Overview==
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MPIF-1, a CC chemokine, is a specific inhibitor of myeloid progenitor cells and is the most potent activator of monocytes. The solution structure of myeloid progenitor inhibitor factor-1 (MPIF-1) has been determined by NMR spectroscopy. The structure reveals that MPIF-1 is a monomer with a well defined core except for termini residues and adopts the chemokine fold of three beta-strands and an overlying alpha-helix. In addition to the four cysteines that characterize most chemokines, MPIF-1 has two additional cysteines that form a disulfide bond. The backbone dynamics indicate that the disulfide bonds and the adjacent residues that include the functionally important N-terminal and N-terminal loop residues show significant dynamics. MPIF-1 is a highly basic protein (pI &gt;9), and the structure reveals distinct positively charged pockets that could be correlated to proteoglycan binding. MPIF-1 is processed from a longer proprotein at the N terminus and the latter is also functional though with reduced potency, and both proteins exist as monomers under a variety of solution conditions. MPIF-1 is therefore unique because longer proproteins of all other chemokines oligomerize in solution. The MPIF-1 structure should serve as a template for future functional studies that could lead to therapeutics for preventing chemotherapy-associated myelotoxicity.
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(as it appears on PubMed at http://www.pubmed.gov), where 11060285 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11060285}}
==About this Structure==
==About this Structure==
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1G91 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G91 OCA].
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1G91 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G91 OCA].
==Reference==
==Reference==
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[[Category: Cytokine]]
[[Category: Cytokine]]
[[Category: Mpif-1]]
[[Category: Mpif-1]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:17:44 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 04:54:42 2008''

Revision as of 01:54, 1 July 2008

Image:1g91.png

Template:STRUCTURE 1g91

SOLUTION STRUCTURE OF MYELOID PROGENITOR INHIBITORY FACTOR-1 (MPIF-1)

Template:ABSTRACT PUBMED 11060285

About this Structure

1G91 is a Single protein structure of sequence from Homo sapiens. Full experimental information is available from OCA.

Reference

Solution structure and dynamics of myeloid progenitor inhibitory factor-1 (MPIF-1), a novel monomeric CC chemokine., Rajarathnam K, Li Y, Rohrer T, Gentz R, J Biol Chem. 2001 Feb 16;276(7):4909-16. Epub 2000 Nov 1. PMID:11060285

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