Professional Education


  • Bachelor of Chemistry, Universidad Populat Autonoma De Puebla (UPAEP) (2005)
  • Master of Science, Universidad Nacional Autonoma Mexico (2009)
  • Doctor of Philosophy, SUNY Health Science Center - Syracuse (2017)

All Publications


  • The 3.5-A CryoEM Structure of Nanodisc-Reconstituted Yeast Vacuolar ATPase Vo Proton Channel The 3.5-A CryoEM Structure of Nanodisc-Reconstituted Yeast Vacuolar ATPase Vo Proton Channel Roh, S., Stam, N. J., Hryc, C. F., Couoh-Cardel,, S., Pintilie, G., Chiu, W., Wilkens, S. 2018; 69 (6): 993-1004

    Abstract

    The molecular mechanism of transmembrane proton translocation in rotary motor ATPases is not fully understood. Here, we report the 3.5-Å resolution cryoEM structure of the lipid nanodisc-reconstituted Vo proton channel of the yeast vacuolar H+-ATPase, captured in a physiologically relevant, autoinhibited state. The resulting atomic model provides structural detail for the amino acids that constitute the proton pathway at the interface of the proteolipid ring and subunit a. Based on the structure and previous mutagenesis studies, we propose the chemical basis of transmembrane proton transport. Moreover, we discovered that the C terminus of the assembly factor Voa1 is an integral component of mature Vo. Voa1's C-terminal transmembrane α helix is bound inside the proteolipid ring, where it contributes to the stability of the complex. Our structure rationalizes possible mechanisms by which mutations in human Vo can result in disease phenotypes and may thus provide new avenues for therapeutic interventions.

    View details for DOI 10.1016/j.molcel.2018.02.006

    View details for PubMedCentralID PMC5893162