2025-07-16 REL RCSB RCSB RCSB 2025-02-10 2025-07-16 2025-07-16 2025-07-16 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM128777 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 1K99GM157496-01 United States Other private The Charles H. Revson Foundation Local refinement of crosslinked LetB MCE Rings 2, 3 and 4 (Map 1b) Santarossa CC Bhabha G Ekiert DC Lipid transporter, Outer membrane integrity, MCE system, Metal-binding protein, Intermembrane complex, LIPID TRANSPORT Santarossa CC Li Y Yousef S Hasdemir HS Rodriguez CC Haase MB Baek M Coudray N Pavek JG Focke KN Silverberg AL Bautista C Yeh J Marty MT Baker D Tajkhorshid E Ekiert DC Bhabha G LetA defines a structurally distinct transporter family involved in lipid trafficking. Biorxiv US 2025 40166208 doi:10.1101/2025.03.21.644421 2692-8205 MCE Rings 2, 3 and 4 crosslinked with glutaraldehyde MCE Rings 2, 3 and 4 crosslinked with glutaraldehyde 0 1 2 Escherichia coli MG1655 singleParticle particle 1 8.0 20.0 Tris-HCl tris(hydroxymethyl)aminomethane hydrochloride 150.0 NaCl sodium chloride 0.5 DDM n-Dodecyl-B-D-maltoside Quantifoil R2/2 COPPER 300 CARBON CONTINUOUS 2.0 GLOW DISCHARGE ETHANE 100 277.15 FEI VITROBOT MARK IV TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.8 0.1 2.1 4.0 81000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K3 BIOCONTINUUM (6k x 4k) 1 12464 50.0 1 3582925
Particles were selected by template-based auto-picking in cryoSPARC
 cryoSPARC v3.2.0 PHASE FLIPPING AND AMPLITUDE CORRECTION C1 2.8 FSC 0.143 CUT-OFF cryoSPARC v4.0.2 131736 MAXIMUM LIKELIHOOD cryoSPARC MAXIMUM LIKELIHOOD cryoSPARC emd_49146.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 360 360 360 0 0 0 360 360 360 370.386 370.386 370.386 90.0 90.0 90.0 X Y Z -0.4957214 1.0467678 -0.0005205883 0.021135818 1.02885 1.02885 1.02885 0.137 AUTHOR 6V0F PDB experimental model
The initial model consisted of the complete biological assembly for PDB entry 6V0F
 FLEXIBLE FIT
Model was fit as a rigid-body into the individual map using Chimera. Real space refinement was carried out in PHENIX. Models were then manually inspected and adjusted in Coot. Iterative rounds of model building and refinement were performed.
REAL emd_49146_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 360 360 360 0 0 0 360 360 360 370.386 370.386 370.386 90.0 90.0 90.0 X Y Z -0.5698321 1.1427714 -0.00008392955 0.04448471 1.02885 1.02885 1.02885 AUTHOR emd_49146_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 360 360 360 0 0 0 360 360 360 370.386 370.386 370.386 90.0 90.0 90.0 X Y Z -0.5451777 1.1909544 -0.00009016185 0.044693694 1.02885 1.02885 1.02885 AUTHOR