9CUI
Structure of human full-length ancestral TRPV6 channel in Calmodulin-bound state
Summary for 9CUI
| Entry DOI | 10.2210/pdb9cui/pdb |
| EMDB information | 45934 |
| Descriptor | Transient receptor potential cation channel subfamily V member 6, Calmodulin-1, CHOLESTEROL HEMISUCCINATE, ... (6 entities in total) |
| Functional Keywords | transient receptor potential v family member 6, trp, channel, trpv6, trp channels, membrane protein, ancestral, calmodulin |
| Biological source | Homo sapiens (human) More |
| Total number of polymer chains | 5 |
| Total formula weight | 405921.28 |
| Authors | Neuberger, A.,Nadezhdin, K.D.,Sobolevsky, A.I. (deposition date: 2024-07-26, release date: 2024-11-13, Last modification date: 2025-01-15) |
| Primary citation | Neuberger, A.,Shalygin, A.,Trofimov, Y.A.,Veretenenko, I.I.,Nadezhdin, K.D.,Krylov, N.A.,Gudermann, T.,Efremov, R.G.,Chubanov, V.,Sobolevsky, A.I. Structure-function analyses of human TRPV6 ancestral and derived haplotypes. Structure, 33:91-103.e5, 2025 Cited by PubMed Abstract: TRPV6 is a Ca selective channel that mediates calcium uptake in the gut and contributes to the development and progression of human cancers. TRPV6 is represented by the ancestral and derived haplotypes that differ by three non-synonymous polymorphisms, located in the N-terminal ankyrin repeat domain (C157R), S1-S2 extracellular loop (M378V), and C-terminus (M681T). The ancestral and derived haplotypes were proposed to serve as genomic factors causing a different outcome for cancer patients of African ancestry. We solved cryoelectron microscopy (cryo-EM) structures of ancestral and derived TRPV6 in the open and calmodulin (CaM)-bound inactivated states. Neither state shows substantial structural differences caused by the non-synonymous polymorphisms. Functional properties assessed by electrophysiological recordings and Ca uptake measurements, and water and ion permeation evaluated by molecular modeling also appear similar between the haplotypes. Therefore, ancestral and derived TRPV6 have similar structure and function, implying that other factors are responsible for the differences in susceptibility to cancer. PubMed: 39500315DOI: 10.1016/j.str.2024.10.018 PDB entries with the same primary citation |
| Experimental method | ELECTRON MICROSCOPY (3.42 Å) |
Structure validation
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