3-DIMENSIONAL RECONSTRUCTION OF THE SURFACE PROTEIN OF PYRODICTIUM-BROCKII - COMPARING 2 IMAGE-PROCESSING STRATEGIES

被引:10
作者
DURR, R [1 ]
HEGERL, R [1 ]
VOLKER, S [1 ]
SANTARIUS, U [1 ]
BAUMEISTER, W [1 ]
机构
[1] MAX PLANCK INST BIOCHEM,W-8033 MARTINSRIED,GERMANY
关键词
D O I
10.1016/1047-8477(91)90067-7
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The three-dimensional structure of the surface layer protein of the hyperthermophilic archaebacterium Pyrodictium brockii was determined by electron crystallographic techniques to a resolution of approximately 1.6 nm. Two image processing strategies-correlation averaging and lattice unbending-were explored with regard to their potential to compensate for lattice distortions. Reconstructions performed via these two routes did not show any significant difference although the unbending approach might be expected to give superior results since, in principle, it incorporates a correction for unit cell displacement, rotation, and deformation while conventional correlation averaging compensates for displacements only. The discussion furthermore addresses some hitherto ignored problems associated with the correction of lattice disorder at higher tilts. © 1991.
引用
收藏
页码:181 / 190
页数:10
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