Although not actively involved in research right now, it is my research training that has defined me as a scientist and as a science educator. I miss research dearly but I found that a single person cannot be both a leading investigator as well as a successful educator as these are each full time jobs. As described in my biography I made a career decision to become a full time science educator and to dedicate all my energy to disseminating science. One thing I should note is that although not physically performing experiments, I continuously keep updated on the latest techniques and discoveries as I read the scientific literature on a regular basis. This is not only essential for the active researcher, but for the educator as well since the only way to teach relevant science is to keep up with the field.


The following is a list of my scientific publications. Although the titles are technical and hard to understand, they will give you a sense for what I have worked on. My biography contains a very short description of this work, but of course if any student has any questions or would like more details, they are welcome to chat with me. I always like to chat about research! If the publisher has made the paper publicly available I have included a link to download it for your convenience.



  1. [Co-grafts of Peripheral Nerve and Neural Stem Cells in Murine Motor Cortex](article in Spanish)

E. Osorio, R. Romero, R. Zamora, A. Gómez, O. Rapalino, J. Cheer, M.A. Murillo & R. Pérez

Universitas Médica. 2000 Jan-Mar; 41(1):60-67.


  1. A splice Variant of the Drosophila Vesicular Monoamine Transporter Contains a Conserved Trafficking Domain and Functions in the Storage of Dopamine, Serotonin and Octopamine.

C. Greer, A. Grygoruk, D.E. Patton, B. Ley, R. Romero-Calderón, H-Y Chang, R. Houshyar, R.J. Bainton, A. DiAntonio & D.E. Krantz

Journal of Neurobiology. 2005 Sep 5; 64(3):239-258.


  1. Transport of Polyamines in Drosophila S2 Cells: Kinetics, Pharmacology and Dependence on Proton Gradient across the Plasma Membrane.

                R. Romero-Calderón & D.E. Krantz

Biochemical Journal. 2006 Jan 15; 393(Pt 2):583-589.


 Click here to download full paper



  1. The Drosophila Pigmentation Gene pink (p) Encodes a Homolog of Human Hermansky-Pudlak Syndrome 5 (HPS5).

J.M. Falcón-Pérez, R. Romero-Calderón, E.S. Brooks, D.E. Krantz & E.C. Dell’Angelica

Traffic. 2007 Jan 15; 8(2):154-168.


  1. A Screen for Neurotransmitter Transporters Expressed in the Visual System of Drosophila melanogaster Identifies Three Novel Genes.

R. Romero-Calderón, R.M. Shome, A.F. Simon, W. Richards, A. DiAntonio & D.E. Krantz

Developmental Neurobiology. 2007 Apr; 67(5):550-569.


  1. A Glial Variant of the Vesicular Monoamine Transporter is Required to Store Histamine in the Drosophila Visual System.

R. Romero-Calderón*, G. Uhlenbrock*, J. Borycz*, A.F. Simon, A. Grygoruk, S.K. Yee, A. Shyer, L.C. Ackerson, N.T. Maidment, I.A. Meinertzhagen, B.T. Hovemann & D.E. Krantz

PLOS Genetics. 2008 Nov; 4(11):e1000245.

   Click here to download full paper



  1. Drosophila Vesicular Monoamine Transporter Mutants can adapt to Reduced or Eliminated Vesicular Stores of Dopamine and Serotonin.

A.F. Simon, R. Daniels, R. Romero-Calderón, A. Grygoruk, H.Y. Chang, R. Najibi, D. Shamouelian, E.D. Salazar, M. Solomon, L.C. Ackerson, N.T. Maidment, A. Diantonio & D.E. Krantz

Genetics. 2009 Feb; 181(2):525-541.

   Click here to download full paper



  1. Mutation of the Drosophila Vesicular GABA Transporter Disrupts Visual Figure Detection.

H. Fei, D.M. Chow, A. Chen, R. Romero-Calderón, W.S. Ong, L.C. Ackerson, N.T. Maidment, J.H. Simpson, M.A. Frye & D.E. Krantz

Journal of Experimental Biology. 2010 May; 213(Pt 10):1717-1730.

   Click here to download full paper



  1. A putative Vesicular Transporter Expressed in Drosophila Mushroom Bodies That Mediates Sexual Behavior May Define a Neurotransmitter System.

E.S. Brooks, C.L. Greer, R. Romero-Calderón, C.N. Serway, A. Grygoruk, J.M. Haimovitz, B.T. Nguyen, R.A. Najibi, C.J. Tabone, S.J. de Belle & D.E. Krantz

Neuron. 2011 Oct 20; 72(2):316-329.

   Click here to download full paper