2KX4

Solution structure of Bacteriophage Lambda gpFII

2KX4 の概要

• エントリーDOI: 10.2210/pdb2kx4/pdb
• 分子名称: Tail attachment protein (1 entity in total)
• 機能のキーワード: gpfii, connector protein, structural genomics, psi, protein structure initiative, ontario centre for structural proteomics, ocsp, viral protein
• 由来する生物種: Bacteriophage lambda
• 細胞内の位置: Virion (Potential): P03714
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 12775.04

構造登録者

Maxwell, K.L.,Cardarelli, L.,Neudecker, P.,Davidson, A.R.,Ontario Centre for Structural Proteomics (OCSP) (登録日: 2010-04-26, 公開日: 2010-07-28, 最終更新日: 2024-05-01)

主引用文献

Cardarelli, L.,Pell, L.G.,Neudecker, P.,Pirani, N.,Liu, A.,Baker, L.A.,Rubinstein, J.L.,Maxwell, K.L.,Davidson, A.R.
Phages have adapted the same protein fold to fulfill multiple functions in virion assembly.
Proc.Natl.Acad.Sci.USA, 107:14384-14389, 2010

PubMed Abstract: Evolutionary relationships may exist among very diverse groups of proteins even though they perform different functions and display little sequence similarity. The tailed bacteriophages present a uniquely amenable system for identifying such groups because of their huge diversity yet conserved genome structures. In this work, we used structural, functional, and genomic context comparisons to conclude that the head-tail connector protein and tail tube protein of bacteriophage lambda diverged from a common ancestral protein. Further comparisons of tertiary and quaternary structures indicate that the baseplate hub and tail terminator proteins of bacteriophage may also be part of this same family. We propose that all of these proteins evolved from a single ancestral tail tube protein fold, and that gene duplication followed by differentiation led to the specialized roles of these proteins seen in bacteriophages today. Although this type of evolutionary mechanism has been proposed for other systems, our work provides an evolutionary mechanism for a group of proteins with different functions that bear no sequence similarity. Our data also indicate that the addition of a structural element at the N terminus of the lambda head-tail connector protein endows it with a distinctive protein interaction capability compared with many of its putative homologues.

PubMed: 20660769
DOI: 10.1073/pnas.1005822107

実験手法

SOLUTION NMR