Complexity of type IV collagens: from network assembly to function

Author:

Wu Yuexin12,Ge Gaoxiang12

Affiliation:

1. State Key Laboratory of Cell Biology, CAS Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Innovation Center for Cell Signaling Network , Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences , Shanghai 200031 , People’s Republic of China

2. University of Chinese Academy of Sciences , Beijing 100049 , People’s Republic of China

Abstract

Abstract Collagens form complex networks in the extracellular space that provide structural support and signaling cues to cells. Network-forming type IV collagens are the key structural components of basement membranes. In this review, we discuss how the complexity of type IV collagen networks is established, focusing on collagen α chain selection in type IV collagen protomer and network formation; covalent crosslinking in type IV collagen network stabilization; and the differences between solid-state type IV collagen in the extracellular matrix and soluble type IV collagen fragments. We further discuss how complex type IV collagen networks exert their physiological and pathological functions through cell surface integrin and nonintegrin receptors.

Funder

National Natural Science Foundation of China

Publisher

Walter de Gruyter GmbH

Subject

Clinical Biochemistry,Molecular Biology,Biochemistry

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