Science Express

[RESEARCH ARTICLES] Dependence of Mouse Embryonic Stem Cells on Threonine Catabolism

Jian Wang

Mouse embryonic stem cells exist in a high-flux metabolic state comparable to that of rapidly dividing bacteria.

Authors: Jian Wang, Peter Alexander, Leeju Wu, Robert Hammer, Ondine Cleaver, Steven L. McKnight

[REPORTS] The Formation of Population III Binaries from Cosmological Initial Conditions

Matthew J. Turk

Simulations show that binary systems are likely to exist among the first generation of stars.

Authors: Matthew J. Turk, Tom Abel, Brian O'Shea

[RESEARCH ARTICLES] Pre-Target Axon Sorting Establishes the Neural Map Topography

Takeshi Imai

The mouse olfactory topographic neural map is self-organized by interactions between axons, not directed by the target.

Authors: Takeshi Imai, Takahiro Yamazaki, Reiko Kobayakawa, Ko Kobayakawa, Takaya Abe, Misao Suzuki, Hitoshi Sakano

[REPORTS] Flexible Learning of Multiple Speech Structures in Bilingual Infants

Ágnes Melinda Kovács

Exposure to two languages facilitates the development of a more flexible associative learning capacity.

Authors: Ágnes Melinda Kovács, Jacques Mehler

[REPORTS] Positive Selection of Tyrosine Loss in Metazoan Evolution

Chris Soon Heng Tan

Evolution of tyrosine phosphorylation as a signaling mechanism may have coincided with loss of tyrosine residues to avoid noise.

Authors: Chris Soon Heng Tan, Adrian Pasculescu, Wendell A. Lim, Tony Pawson, Gary D. Bader, Rune Landing