Aleksander W Roszak
Overview
Explore the profile of Aleksander W Roszak including associated specialties, affiliations and a list of published articles.
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37
Citations
587
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Recent Articles
1.
Qian P, Nguyen-Phan C, Gardiner A, Croll T, Roszak A, Southall J, et al.
Proc Natl Acad Sci U S A
. 2022 Oct;
119(43):e2210109119.
PMID: 36251992
The genomes of some purple photosynthetic bacteria contain a multigene family encoding a series of α- and β-polypeptides that together form a heterogeneous antenna of light-harvesting 2 (LH2) complexes. To...
2.
Sonani R, Roszak A, Liu H, Gross M, Blankenship R, Madamwar D, et al.
Photosynth Res
. 2020 Apr;
144(3):349-360.
PMID: 32303893
The crystal structure of phycocyanin (pr-PC) isolated from Phormidium rubidum A09DM (P. rubidum) is described at a resolution of 1.17 Å. Electron density maps derived from crystallographic data showed many...
3.
Schelter I, Foerster J, Gardiner A, Roszak A, Cogdell R, Ullmann G, et al.
J Chem Phys
. 2019 Oct;
151(13):134114.
PMID: 31594320
We use real-time density functional theory on a real-space grid to calculate electronic excitations of bacteriochlorophyll chromophores of the light-harvesting complex 2 (LH2). Comparison with Gaussian basis set calculations allows...
4.
Fillol-Salom A, Bacarizo J, Alqasmi M, Ciges-Tomas J, Martinez-Rubio R, Roszak A, et al.
Mol Cell
. 2019 Jul;
75(5):1020-1030.e4.
PMID: 31350119
Phage-inducible chromosomal islands (PICIs) represent a novel and universal class of mobile genetic elements, which have broad impact on bacterial virulence. In spite of their relevance, how the Gram-negative PICIs...
5.
Patel H, Roszak A, Madamwar D, Cogdell R
Int J Biol Macromol
. 2019 May;
135:62-68.
PMID: 31121226
Phycocyanin (PC) is the principal pigment protein in the light-harvesting antenna of cyanobacteria. Here the biochemical characterization and the 1.51 Å crystal structure of PC from cyanobacterium Nostoc sp. WR13...
6.
An improved crystal structure of C-phycoerythrin from the marine cyanobacterium Phormidium sp. A09DM
Sonani R, Roszak A, Ortmann de Percin Northumberland C, Madamwar D, Cogdell R
Photosynth Res
. 2017 Sep;
135(1-3):65-78.
PMID: 28918447
C-Phycoerythrin (PE) from Phormidium sp. A09DM has been crystallized using different conditions and its structure determined to atomic resolution (1.14 Å). In order for the pigment present, phycoerythrobilin (PEB), to...
7.
Southall J, Henry S, Gardiner A, Roszak A, Mullen W, Carey A, et al.
Photosynth Res
. 2017 Jun;
135(1-3):9-21.
PMID: 28567613
Rhodopseudomonas palustris is a species of purple photosynthetic bacteria that has a multigene family of puc genes that encode the alpha and beta apoproteins, which form the LH2 complexes. A...
8.
Grinter R, Josts I, Mosbahi K, Roszak A, Cogdell R, Bonvin A, et al.
Nat Commun
. 2016 Nov;
7:13308.
PMID: 27796364
Iron is a limiting nutrient in bacterial infection putting it at the centre of an evolutionary arms race between host and pathogen. Gram-negative bacteria utilize TonB-dependent outer membrane receptors to...
9.
Joshi A, Grinter R, Josts I, Chen S, Wojdyla J, Lowe E, et al.
J Mol Biol
. 2015 Jul;
427(17):2852-66.
PMID: 26215615
How ultra-high-affinity protein-protein interactions retain high specificity is still poorly understood. The interaction between colicin DNase domains and their inhibitory immunity (Im) proteins is an ultra-high-affinity interaction that is essential...
10.
Fyfe C, Grinter R, Josts I, Mosbahi K, Roszak A, Cogdell R, et al.
Acta Crystallogr D Biol Crystallogr
. 2015 Jul;
71(Pt 7):1478-86.
PMID: 26143919
Bacterial α-2-macroglobulins have been suggested to function in defence as broad-spectrum inhibitors of host proteases that breach the outer membrane. Here, the X-ray structure of protease-cleaved Escherichia coli α-2-macroglobulin is...