User profiles for M. J. Alkema

mark alkema

University of Massachusetts Medical School
Verified email at umassmed.edu
Cited by 5328

[PDF][PDF] Tyramine functions independently of octopamine in the Caenorhabditis elegans nervous system

MJ Alkema, M Hunter-Ensor, N Ringstad, HR Horvitz - Neuron, 2005 - cell.com
Octopamine biosynthesis requires tyrosine decarboxylase to convert tyrosine into tyramine
and tyramine β-hydroxylase to convert tyramine into octopamine. We identified and …

Optogenetic manipulation of neural activity in freely moving Caenorhabditis elegans

AM Leifer, C Fang-Yen, M Gershow, MJ Alkema… - Nature …, 2011 - nature.com
We present an optogenetic illumination system capable of real-time light delivery with high
spatial resolution to specified targets in freely moving Caenorhabditis elegans. A tracking …

Illuminating neural circuits and behaviour in Caenorhabditis elegans with optogenetics

C Fang-Yen, MJ Alkema… - … Transactions of the …, 2015 - royalsocietypublishing.org
The development of optogenetics, a family of methods for using light to control neural
activity via light-sensitive proteins, has provided a powerful new set of tools for neurobiology. …

The neuroethology of C. elegans escape

JK Pirri, MJ Alkema - Current opinion in neurobiology, 2012 - Elsevier
Escape behaviors are crucial to survive predator encounters. Touch to the head of Caenorhabditis
elegans induces an escape response where the animal rapidly backs away from the …

[HTML][HTML] A multiparameter network reveals extensive divergence between C. elegans bHLH transcription factors

…, F De Masi, MI Barrasa, DE Newburger, MJ Alkema… - Cell, 2009 - cell.com
Differences in expression, protein interactions, and DNA binding of paralogous transcription
factors ("TF parameters") are thought to be important determinants of regulatory and …

The DNA binding specificity of the bipartite POU domain and its subdomains.

CP Verrijzer, MJ Alkema, WW Van Weperen… - The EMBO …, 1992 - embopress.org
The POU domain is a conserved DNA binding region of approximately 160 amino acids
present in a family of eukaryotic transcription factors that play regulatory roles in development. …

Identification of Bmi1-interacting proteins as constituents of a multimeric mammalian polycomb complex.

MJ Alkema, M Bronk, E Verhoeven, A Otte… - Genes & …, 1997 - genesdev.cshlp.org
The Bmi1 gene has been identified as a mouse Polycomb group (Pc-G) gene implicated in
the regulation of Hox gene expression. Here we describe the characterization of a Bmi …

RING1 is associated with the polycomb group protein complex and acts as a transcriptional repressor

…, KM Hamer, W Schul, MJ Alkema… - … and cellular biology, 1997 - Taylor & Francis
The Polycomb (Pc) protein is a component of a multimeric, chromatin-associated Polycomb
group (PcG) protein complex, which is involved in stable repression of gene activity. The …

[PDF][PDF] A tyramine-gated chloride channel coordinates distinct motor programs of a Caenorhabditis elegans escape response

…, AD McPherson, JL Donnelly, MM Francis, MJ Alkema - Neuron, 2009 - cell.com
A key feature of escape responses is the fast translation of sensory information into a
coordinated motor output. In C. elegans, anterior touch initiates a backward escape response in …

[HTML][HTML] Monoaminergic Orchestration of Motor Programs in a Complex C. elegans Behavior

…, MM Francis, ADT Samuel, MJ Alkema - PLoS …, 2013 - journals.plos.org
Monoamines provide chemical codes of behavioral states. However, the neural mechanisms
of monoaminergic orchestration of behavior are poorly understood. Touch elicits an escape …