1m3d

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{{STRUCTURE_1m3d| PDB=1m3d | SCENE= }}
{{STRUCTURE_1m3d| PDB=1m3d | SCENE= }}
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'''Structure of Type IV Collagen NC1 Domains'''
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===Structure of Type IV Collagen NC1 Domains===
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==Overview==
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Type IV collagen, which is present in all metazoan, exists as a family of six homologous alpha(IV) chains, alpha1-alpha6, in mammals. The six chains assemble into three different triple helical protomers and self-associate as three distinct networks. The network underlies all epithelia as a component of basement membranes, which play important roles in cell adhesion, growth, differentiation, tissue repair and molecular ultrafiltration. The specificity of both protomer and network assembly is governed by amino acid sequences of the C-terminal noncollagenous (NC1) domain of each chain. In this study, the structural basis for protomer and network assembly was investigated by determining the crystal structure of the ubiquitous [(alpha1)(2).alpha2](2) NC1 hexamer of bovine lens capsule basement membrane at 2.0 A resolution. The NC1 monomer folds into a novel tertiary structure. The (alpha1)(2).alpha2 trimer is organized through the unique three-dimensional domain swapping interactions. The differences in the primary sequences of the hypervariable region manifest in different secondary structures, which determine the chain specificity at the monomer-monomer interfaces. The trimer-trimer interface is stabilized by the extensive hydrophobic and hydrophilic interactions without a need for disulfide cross-linking.
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The line below this paragraph, {{ABSTRACT_PUBMED_11970952}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 11970952 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11970952}}
==About this Structure==
==About this Structure==
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[[Category: Network assembly]]
[[Category: Network assembly]]
[[Category: Type iv collagen]]
[[Category: Type iv collagen]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:35:03 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 23:07:53 2008''

Revision as of 20:07, 2 July 2008

Image:1m3d.png

Template:STRUCTURE 1m3d

Structure of Type IV Collagen NC1 Domains

Template:ABSTRACT PUBMED 11970952

About this Structure

1M3D is a Protein complex structure of sequences from Bos taurus. Full crystallographic information is available from OCA.

Reference

Crystal structure of NC1 domains. Structural basis for type IV collagen assembly in basement membranes., Sundaramoorthy M, Meiyappan M, Todd P, Hudson BG, J Biol Chem. 2002 Aug 23;277(34):31142-53. Epub 2002 Apr 22. PMID:11970952

Page seeded by OCA on Wed Jul 2 23:07:53 2008

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