Alpha 1 type IV collagen gene evolved differently from fibrillar collagen genes.

Hagfish and lancelet fibrillar collagens reveal that type II collagen-based cartilage evolved in stem vertebrates.

The origin of vertebrates was defined by evolution of a skeleton; however, little is known about the developmental mechanisms responsible for this landmark evolutionary innovation. In jawed vertebrates, cartilage matrix consists predominantly of type II collagen (Col2alpha1), whereas that of jawless fishes has long been thought to be noncollagenous. We recently showed that Col2alpha1 is present...

The Fibrillar Collagen Family

Collagens, or more precisely collagen-based extracellular matrices, are often considered as a metazoan hallmark. Among the collagens, fibrillar collagens are present from sponges to humans, and are involved in the formation of the well-known striated fibrils. In this review we discuss the different steps in the evolution of this protein family, from the formation of an ancestral fibrillar colla...

Proteoglycan-fibrillar collagen interactions.

The future of biochemistry lies in understanding how single gene products associate and function together. Interactions in connective tissues, including those between the proteoglycans and collagens are especially piquant, evolutionarily conserved and physiologically significant. Connective tissues (e.g. skin, tendon, blood vessels, etc.) are systems of insoluble fibrils and soluble polymers wh...

COL 1 A 1 ( collagen , type I , alpha 1 )

Study of Expression Type Iv Collagen During Mouse Kidney Ubulogenesis in Balb/C Mouse

Purpose: In this study specific antibody have been used for tracing type IV collagen basement membrane during renal tubules morphogenesis in mouse fetuses. Materials and Methods: 20 female Balb/C mice were selected randomly and were kept under normal condition, finding vaginal plug was assumed as day zero of pregnancy. 12 pregnant mice were scarified by cervical dislocation in one of gestationa...