[Absence of small-angle maximums on the x-ray images of ocular lens tissue].
X-ray small-angle scattering study of bovine lens tissue was carried out. It was shown that X-ray patterns of lens cortical and nuclear native tissues did not contain the small-angle maxima. The maximum in the range of 15-20 nm Bragg distance appeared as a result of the lens tissue partial dehydration. Earlier such maximum was considered by some authors as the evidence of crystallin proteins short-range order in the native lens. Now it is confirmed to be a preparative artefact of dehydration. It was shown also that similar maximum in 15-20 range existed in the case of concentrated crystallin solutions. This indicates that supramolecular organization of crystallins in the native lens is not similar to that in the concentrated solution.
Krivandin
A V
AV
Feĭgin
L A
LA
D000818:Animals; D002417:Cattle; D003459:Crystallins / Q000737:chemistry*; D007904:Lens Cortex, Crystalline / Q000737:chemistry; D007907:Lens Nucleus, Crystalline / Q000737:chemistry; D007908:Lens, Crystalline / Q000737:chemistry*; D012542:Scattering, Radiation; D014961:X-Ray Diffraction
D003459:Crystallins
Otsutstvie malouglovykh maksimumov na rentgenogrammakh tkani khrustalika glaza.