1EIA

X-RAY CRYSTAL STRUCTURE OF EQUINE INFECTIOUS ANEMIA VIRUS (EIAV) CAPSID PROTEIN P26

1EIA の概要

• エントリーDOI: 10.2210/pdb1eia/pdb
• 分子名称: EIAV CAPSID PROTEIN P26 (2 entities in total)
• 機能のキーワード: viral capsid, eiav, hiv, lentivirus, viral protein
• 由来する生物種: Equine infectious anemia virus
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 23487.65

構造登録者

Jin, Z.,Jin, L.,Peterson, D.L.,Lawson, C.L. (登録日: 1998-07-15, 公開日: 1999-02-16, 最終更新日: 2024-10-09)

主引用文献

Jin, Z.,Jin, L.,Peterson, D.L.,Lawson, C.L.
Model for lentivirus capsid core assembly based on crystal dimers of EIAV p26.
J.Mol.Biol., 286:83-93, 1999

PubMed Abstract: Two crystal forms of recombinant p26 capsid protein (CA) from the equine infectious anemia virus (EIAV) have in common an antiparallel four-helix bundle dimer interface between N-terminal domains (NTDs). The dimer interface provides a lenient scaffold to accommodate the wide sequence variation in these helices within lentivirus CA. Pairs of dimers weakly associate to form exact or approximate D2 symmetry tetramers. In one of the two crystal forms, the tetramers are linked via dimerization of C-terminal domains (CTDs). We propose that the observed NTD and CTD homodimer interactions are involved in the assembly of the lentivirus capsid. The NTD homodimer shape readily suggests a model for the mature capsid core, based on hexagonal packing with dimensions and surface topology resembling described EIAV capsid cores. Combining available data for human immunodeficiency virus and EIAV CA, we also propose an assembly pathway for maturation of the lentivirus capsid core following proteolytic cleavage of the gag polyprotein precursor.

PubMed: 9931251
DOI: 10.1006/jmbi.1998.2443

実験手法

X-RAY DIFFRACTION (2.7 Å)