Fibrillar Collagens
Mostrando 1-12 de 37 artigos, teses e dissertações.
-
1. Análise molecular e funcional dos genes formadores e reguladores do colágeno tipo I em pacientes com osteogênese imperfeita = : Molecular and functional analysis of regulatory and structure-related genes of type I collagen in patients with osteogenesis imperfecta / Molecular and functional analysis of regulatory and structure-related genes of type I collagen in patients with osteogenesis imperfecta
A Osteogênese Imperfeita (OI) é um distúrbio genético caracterizado por baixa massa e fragilidade óssea, e outras manifestações do tecido conjuntivo, decorrente de defeitos qualitativos ou quantitativos do colágeno tipo I. Está associada a mutações nos genes COL1A1 e COL1A2 que codificam respectivamente as cadeias pro alfa 1-(I) e pro alfa -2(I) f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
-
2. Morphological and biochemical analysis of the synovia of rabbits immunized with type V collagen / "Análise morfológica e bioquímica da sinóvia de coelhos imunizados com colágeno do tipo V"
We described an original model of experimental synovitis in rabbits immunized with collagen V with scant cellular infiltration, intense matrix remodeling and vasculitis. Morphological and biochemical analysis were realized in New Zealand female rabbits (N=20) immunization with type V collagen, compared with control rabbits. It was observed increase of collag
Publicado em: 2005
-
3. Genetic segregation analysis of familial mitral valve prolapse shows no linkage to fibrillar collagen genes.
Three pedigrees were identified in which mitral valve prolapse seemed to be inherited as a mendelian autosomal dominant trait. The segregation of the genes encoding the major fibrillar collagens present in valve tissue, collagens I and III, was analysed by use of restriction enzyme site variants as genetic markers. In one pedigree there was discordance betwe
-
4. The pro alpha 2(V) collagen gene is evolutionarily related to the major fibrillar-forming collagens.
A number of overlapping cDNA clones, covering 5.2 kb of sequences which code for the human pro alpha 2(V) collagen chain, have been isolated. Analysis of the structural data have indicated a close evolutionary kinship between the pro alpha 2(V) chain and the major fibrillar collagen types. Isolation and analysis of an 8 kb genomic fragment has further suppor
-
5. A new twist in the collagen story—the type VI segmented supercoil
Collagen occurs in two major forms: fibrillar and non-fibrillar. Non-fibrillar collagens are structurally more variable and relatively ill-understood. In this work we analysed the amino acid sequence of type VI collagen, a non-fibrillar collagen that forms antiparallel dimers. A sequence motif was discovered that gives rise to systematic molecular coiling.
Oxford University Press.
-
6. The pro α2(V) collagen gene is evolutionarily related to the major fibrillar-forming collagens
-
7. Folding defects in fibrillar collagens.
Fibrillar collagens have a long triple helix in which glycine is in every third position for more than 1000 amino acids. The three chains of these molecules are assembled with specificity into several different molecules that have tissue-specific distribution. Mutations that alter folding of either the carboxy-terminal globular peptides that direct chain ass
-
8. The C-proteinase that processes procollagens to fibrillar collagens is identical to the protein previously identified as bone morphogenic protein-1.
Bone morphogenic protein-1 (BMP-1) was originally identified as one of several BMPs that induced new bone formation when implanted into ectopic sites in rodents. BMP-1, however, differed from other BMPs in that it its structure was not similar to transforming growth factor beta. Instead, it had a large domain homologous to a metalloendopeptidase isolated fro
-
9. Articular cartilage and changes in Arthritis: Collagen of articular cartilage
The extracellular framework and two-thirds of the dry mass of adult articular cartilage are polymeric collagen. Type II collagen is the principal molecular component in mammals, but collagens III, VI, IX, X, XI, XII and XIV all contribute to the mature matrix. In developing cartilage, the core fibrillar network is a cross-linked copolymer of collagens II, IX
BioMed Central.
-
10. Elucidation of the potential roles of matrix metalloproteinases in skeletal biology
Irreversible destruction of joint structures is a major feature of osteoarthritis and rheumatoid arthritis. Fibrillar collagens in bone, cartilage and other soft tissues are critical for optimal joint form and function. Several approaches can be used to ascertain the role of collagenases, matrix metalloproteinases, in proteolysis of joint collagens in arthri
BioMed Central.
-
11. Codistribution of pericellular matrix proteins in cultured fibroblasts and loss in transformation: Fibronectin and procollagen
Antibodies to fibronectin and to distinct types of procollagens and collagens were used in immunofluorescent staining to localize these proteins in cell cultures. Normal human skin or lung fibroblasts produced a fibrillar pericellular matrix in which fibronectin and procollagen (types I and III) showed extensive codistribution. Fibronectin and procollagen we
-
12. Characterization of a fibrillar collagen gene in sponges reveals the early evolutionary appearance of two collagen gene families.
We have characterized cDNA and genomic clones coding for a sponge collagen. The partial cDNA has an open reading frame encoding 547 amino acid residues. The conceptual translation product contains a probably incomplete triple-helical domain (307 amino acids) with one Gly-Xaa-Yaa-Zaa imperfection in the otherwise perfect Gly-Xaa-Yaa repeats and a carboxyl pro