Structure of the lamprey yolk lipid-protein complex lipovitellin-phosvitin at 2.8 A resolution.
Structure of the lamprey yolk lipid-protein complex lipovitellin-phosvitin at 2.8 A resolution.
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七鳃鳗卵黄脂质-蛋白质复合物脂卵黄蛋白-卵黄高磷蛋白的结构,分辨率为 2.8 A。
DOI:
10.1016/0022-2836(88)90542-6
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发表时间:
1988
影响因子:
5.6
通讯作者:
Banaszak,L
中科院分区:
文献类型:
--
作者:
Raag,R;Appelt,K;Xuong,NH;Banaszak,L
The X-ray crystallographic structure of the lipid-protein complex lipovitellin-phosvitin has been determined with the multiple isomorphous replacement method using four heavyatom derivatives. Lamprey yolk lipovitellin-phosvitin is a dimeric molecule of molecular weight 352,000. The monomer consists of three polypeptide chains. The smallest is known as phosvitin and has an extremely high phosphoserine content. The monomeric unit also contains about 16%(w w) of non-covalently bound lipid, probably in a monolayer or bilayer-like configuration. Within each monomer is a “cavity” or region of low electron density. The cavity has a volume of about 68,000 Å 3 and is believed to contain the lipid in a presumably disordered state. The cavity is roughly conical in shape and is lined on two sides by seven and eight-stranded antiparallel β-sheets. The base of the cavity opens away from the intersubunit interface, but appears partially closed off from solvent regions by additional antiparallel β-sheet structure. The β-sheets lining the sides of the cavity are surrounded by a shell of two curved layers of 16 interconnected helices. The helices in either layer of the shell are all roughly parallel to each other and antiparallel to all of the helices of the other layer. The connectivity of the helices resembles a “superhelix” and is different from the connectivities seen in proteins containing four-helix bundles. There are an estimated 1300 amino acids in lamprey lipovitellin-phosvitin and almost 1000 alanine residues have been modeled into electron density. The remaining residues are assumed to be disordered.
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影响因子:
64.8
作者:
C. Blake;S. Oatley
通讯作者:
S. Oatley
DOI:
10.1111/j.1432-1033.1983.tb07182.x
发表时间:
1983
期刊:
European journal of biochemistry
影响因子:
--
作者:
C. Lane;J. Champion;A. Colman;T. James;S. Applebaum
通讯作者:
S. Applebaum
DOI:
--
发表时间:
1978
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
K. Müller;P. Laggner;O. Glatter;G. Kostner
通讯作者:
G. Kostner
影响因子:
64.8
作者:
P. Weber;R. G. Bartsch;M. Cusanovich;R. Hamlin;Andrew Howard;S. Jordan;Martin D. Kamen;Terrance E. Meyer;D. Weatherford;N. Xuong;Francis Raymond Salemme
通讯作者:
Francis Raymond Salemme
DOI:
10.1016/0889-1605(86)90053-4
发表时间:
1986
期刊:
Journal of ultrastructure and molecular structure research
影响因子:
--
作者:
Raag,R;Roderick,S;Banaszak,L
通讯作者:
Banaszak,L