Thromb Haemost 2003; 89(04): 632-636
DOI: 10.1055/s-0037-1613569
Blood Coagulation, Fibrinolysis and Cellular Haemostasis
Schattauer GmbH

Protofibrils within fibrin fibres are packed together in a regular array

Giulio Caracciolo
1   Istituto di Fisica and INFM, Università Cattolica S. Cuore, Rome, Italy
,
Marco De Spirito
1   Istituto di Fisica and INFM, Università Cattolica S. Cuore, Rome, Italy
,
Agostina Congiu Castellano
2   Dipartimento di Fisica and INFM, Università di Roma ‘La Sapienza’, Rome, Italy
,
Daniela Pozzi
2   Dipartimento di Fisica and INFM, Università di Roma ‘La Sapienza’, Rome, Italy
,
Gino Amiconi
3   CNR Centre for Molecular Biology and Department of Biochemical Sciences, Università di Roma ‘La Sapienza’, Rome, Italy
,
Angela De Pascalis
3   CNR Centre for Molecular Biology and Department of Biochemical Sciences, Università di Roma ‘La Sapienza’, Rome, Italy
,
Ruggero Caminiti
4   Dipartimento di Chimica and INFM, Università di Roma ‘La Sapienza’, Rome, Italy
,
Giuseppe Arcovito
1   Istituto di Fisica and INFM, Università Cattolica S. Cuore, Rome, Italy
› Author Affiliations
Further Information

Publication History

Received 16 October 2002

Accepted after revision 27 January 2003

Publication Date:
07 December 2017 (online)

Summary

The inner structure of fibrin fibres grown from fibrinogen solution activated by human α-thrombin was investigated by means of an Energy Dispersive X-ray Diffraction technique. The experiments show evidence for the well-characterized 22.5 nm repeat distance, which indicates the high order of protofibril arrangement in the longitudinal direction of fibres. The diffraction pattern also manifested a further pronounced peak at 18.1 nm (and its second order reflection at 18.1/√2) demonstrating the existence in fibrin of a high degree of lateral order. The reported results directly confirm, on unperturbed wet samples, that protofibrils closely associate giving rise to a crystalline axial and equatorial packing according to the conclusions of the multibundle model.

Theme paper: Part of this work was originally presented at the joint meetings of the 16th International Congress of the International Society of Fibrinolysis and Proteolysis (ISFP) and the 17th International Fibrinogen Workshop of the International Fibrinogen Research Society (IFRS) held in Munich, Germany, September, 2002.

 
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