This repository contains four Supplementary Material files related to the manuscript "Putative novel hydrogen- and iron-oxidizing sheath-producing Zetaproteobacteria thrive at the Fåvne deep-sea hydrothermal vent field". 1) SupplementaryMaterial1_TableS1.pdf Supplementary Material 1. Sampling locations. 2) SupplementaryMaterial2.pdf Supplementary Material 2. Supplementary Data and Figures. 3) SupplementaryMaterial3.xlsx Supplementary Material 3. Supplementary Tables. Supplementary Table S1. Viral populations in Fåvne black smoker iron microbial mat. Supplementary Table S2. MAGs present in the black smoker iron microbial mat. Supplementary Table S3. Coverage of Zetaproteobacteria MAGs in Fåvne samples. Supplementary Table S4. Zetaproteobacteria MAGs used in this study. Supplementary Table S5. Predicted gene expression based on codon usage. Supplementary Table S6. Hydrogenase Hya included in the hya phylogenetic tree. Supplementary Table S7. Cyc2 included in the cyc2 phylogenetic tree. Supplementary Table S8. Results of proteomics analysis. Supplementary Table S9. Heavy metal resistance genes identified using BacMet database. Supplementary Table S10. Sequencing statistics for MinION Nanopore sequencing. Supplementary Table S11. Sequencing statistics for Illumina NovaSeq sequencing. Supplementary Table S12. Assembly statistics for comparison, based on MetaQUAST. Supplementary Table S13. List of single-copy marker genes used for concatenated phylogeny. Supplementary Table S14. Selected genes for metabolism annotation. 4) SupplementaryMaterial4.mp4 Supplementary Material 4. Sampling video of black smoker iron microbial mats at Fåvne hydrothermal vent (North Tower vent site).