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Anomalous cysteine in type I collagen. Localisation by chemical cleavage of the protein using 2-nitro-5-thiocyanobenzoic acid and by mismatch analysis of cDNA heteroduplexes.

TENNI, RUGGERO;ROSSI, ANTONIO;VALLI, MAURIZIA;CETTA, GIUSEPPE
1990-01-01
1990
Biochemistry & Biophysics focuses on the structure and chemistry of biomolecules and covers all aspects of basic biochemistry/biophysics, including molecular structure, enzyme kinetics and protein-protein interaction; this category also contains cross-disciplinary resources focused on a specific class of biological molecules, e.g., nucleic acids, steroids, magnesium, growth factors, free radicals, bio-membranes, and peptides. Excluded are resources dealing with the application of biochemical techniques to specific topics listed elsewhere in CC/LS. Resources with a strong emphasis on the integration of biochemical pathways (such as signal transduction or molecular motors) at the cellular level are placed in the Cell & Developmental Biology category.
MATRIX: COLLAGEN AND RELATED RESEARCH
sì
CY803
Sì, ma tipo non specificato
Inglese
Internazionale
STAMPA
10
1
20
26
2352509
A method is presented for the localisation of an anomalous cysteine inside the triple helical domain of type I collagen from a patient affected with Osteogenesis Imperfecta. The chemical cleavage used relies on the specificity and reactivity of the thiol side chain versus 2-nitro-5-thiocyanobenzoic acid, to yield cyanocysteine; in mild alkaline conditions this derivative will undergo the breakdown of its N-side peptide bond. This method could allow a more precise localisation of anomalous cysteine in both type I collagen alpha chains, alpha 1(I) and alpha 2(I), compared to previous analytical methods on CNBr peptides. For the mutant alpha 1(I) chains from a patient affected by Osteogenesis Imperfecta, we found a location of cysteine in the peptide alpha 1(I)CB8, between amino acids 170-200. Biochemical localisation was confirmed by a chemical cleavage method for mismatched cytosines on heteroduplexes obtained after denaturation and annealing of a 233 bp cDNA fragment amplified by PCR from the heterozygote patient.
mismatch analysis; osteogenesis imperfecta; collagen; mutation
6
info:eu-repo/semantics/article
262
Tenni, Ruggero; Rossi, Antonio; Valli, Maurizia; Mottes, M; Pignatti, Pf; Cetta, Giuseppe
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/134793
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