Abstract：
:The X-ray diffraction pattern of tendon collagen can contain a number of sharp Bragg peaks indicating three-dimensional crystallinity of the sample. Optimal diffraction images have been obtained with a high flux synchrotron X-ray source and a carefully maintained sample environment and staining techniques. The Bragg peaks are always superimposed on a diffuse background. This makes interpretation of data difficult and a number of conflicting models of collagen packing have been proposed. The removal of the diffuse scatter from the images allows the Bragg peaks to be seen on a relatively flat background. This was conducted by modelling the background points as a series of two-dimensional polynomial functions. The resultant set of observed Bragg reflections serves as an excellent basis to test the validity of two contradictory packing modes; (1) the triclinic model, Fraser et al., (2) the microfibril model, Kajava. From this it can easily be seen that the model proposed by Kajava is inappropriate, since there is limited agreement between predicted positions of reflections and the positions of observable reflections on film. The packing of collagen molecules on a triclinic lattice is favoured by this criterion.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Wess TJ,Hammersley A,Wess L,Miller Adoi
10.1016/s0022-2836(95)80065-4subject
Has Abstractpub_date
1995-04-28 00:00:00pages
487-93issue
2eissn
0022-2836issn
1089-8638pii
S0022-2836(95)80065-4journal_volume
248pub_type
杂志文章abstract：:During homologous recombination, genetic information is physically exchanged between parental DNAs via crossing single strands of the same polarity within a four-way DNA junction called a Holliday structure. This process is terminated by the endonucleolytic activity of resolvases, which convert the four-way DNA back t...
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pub_type： 杂志文章
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pub_type： 杂志文章,收录出版
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更新日期：2000-02-18 00:00:00
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pub_type： 杂志文章
doi：10.1006/jmbi.1993.1325
更新日期：1993-06-05 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1006/jmbi.2001.4767
更新日期：2001-07-06 00:00:00
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更新日期：1994-02-11 00:00:00
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更新日期：1996-11-29 00:00:00
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更新日期：2001-08-31 00:00:00
