Category Archives: Philos Trans R Soc Lond B Biol Sci

An option space for early neural evolution.

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An option space for early neural evolution.

Philos Trans R Soc Lond B Biol Sci. 2015 Dec 19;370(1684)

Authors: Jékely G, Keijzer F, Godfrey-Smith P

Abstract
The origin of nervous systems has traditionally been discussed within two conceptual frameworks. Input-output models stress the sensory-motor aspects of nervous systems, while internal coordination models emphasize the role of nervous systems in coordinating multicellular activity, especially muscle-based motility. Here we consider both frameworks and apply them to describe aspects of each of three main groups of phenomena that nervous systems control: behaviour, physiology and development. We argue that both frameworks and all three aspects of nervous system function need to be considered for a comprehensive discussion of nervous system origins. This broad mapping of the option space enables an overview of the many influences and constraints that may have played a role in the evolution of the first nervous systems.

PMID: 26554049 [PubMed – in process]

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On the interplay between working memory consolidation and attentional selection in controlling conscious access: parallel processing at a cost-a comment on ‘The interplay of attention and consciousness in visual search, attentional blink and working memory consolidation’.

On the interplay between working memory consolidation and attentional selection in controlling conscious access: parallel processing at a cost-a comment on ‘The interplay of attention and consciousness in visual search, attentional blink and w… Continue reading

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Oil droplets of bird eyes: microlenses acting as spectral filters.

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Oil droplets of bird eyes: microlenses acting as spectral filters.

Philos Trans R Soc Lond B Biol Sci. 2014;369(1636):20130041

Authors: Stavenga…

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Structure of the dimeric RC-LH1-PufX complex from Rhodobaca bogoriensis investigated by electron microscopy.

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Structure of the dimeric RC-LH1-PufX complex from Rhodobaca bogoriensis investigated by electron microscopy.

Philos Trans R Soc Lond B Biol Sci. 2012 Dec 19;367(1608):3412-9

Authors: Semchonok DA, Chauvin JP, Frese RN, Jungas C, Boekema EJ

Abstract
Electron microscopy and single-particle averaging were performed on isolated reaction centre (RC)-antenna complexes (RC-LH1-PufX complexes) of Rhodobaca bogoriensis strain LBB1, with the aim of establishing the LH1 antenna conformation, and, in particular, the structural role of the PufX protein. Projection maps of dimeric complexes were obtained at 13 Å resolution and show the positions of the 2 × 14 LH1 α- and β-subunits. This new dimeric complex displays two open, C-shaped LH1 aggregates of 13 αβ polypeptides partially surrounding the RCs plus two LH1 units forming the dimer interface in the centre. Between the interface and the two half rings are two openings on each side. Next to the openings, there are four additional densities present per dimer, considered to be occupied by four copies of PufX. The position of the RC in our model was verified by comparison with RC-LH1-PufX complexes in membranes. Our model differs from previously proposed configurations for Rhodobacter species in which the LH1 ribbon is continuous in the shape of an S, and the stoichiometry is of one PufX per RC.

PMID: 23148268 [PubMed – indexed for MEDLINE]

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Different anti-aggregation and pro-degradative functions of the members of the mammalian sHSP family in neurological disorders.

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Different anti-aggregation and pro-degradative functions of the members of the mammalian sHSP family in neurological disorders.
Philos Trans R Soc Lond B Biol Sci. 2013;368(1617):20110409
Authors: Carra S, Rus… Continue reading

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The bacterial Sec-translocase: structure and mechanism.

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The bacterial Sec-translocase: structure and mechanism.

Philos Trans R Soc Lond B Biol Sci. 2012 Apr 19;367(1592):1016-28

Authors: Lycklama A Nijeholt JA,…

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Evolution of time-keeping mechanisms: early emergence and adaptation to photoperiod.

Evolution of time-keeping mechanisms: early emergence and adaptation to photoperiod.

Philos Trans R Soc Lond B Biol Sci. 2011 Jul 27;366(1574):2141-54

Authors: Hut RA, Beersma DG

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Morphology and behaviour: functional links in development and evolution.

Morphology and behaviour: functional links in development and evolution.

Philos Trans R Soc Lond B Biol Sci. 2011 Jul 27;366(1574):2056-68

Authors: Bertossa RC

Abstract

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