Compressed directories containing code and data files sufficient to reproduce analysis from Bloom et al paper on Lactobacillus iners (Nature Microbiology). An earlier, non-peer-reviewed manuscript version containing largely the same analysis was posted as a pre-print in bioRxiv at (https://doi.org/10.1101/2021.06.12.448098). Three compressed directory for analyses of: Vaginal Lactobacillus genome catalog characterization and gene content analysis. Analysis of relationship between cervicovaginal microbiota composition and cysteine concentrations in vaginal fluid from a South African cohort Analysis of results of in vitro mixed culture competition assays including: Pairwise competition between L. iners and Lactobacillus crispatus in Lactobacillus MRS broth containing L-cysteine +/- S-methyl-L-cysteine (SMC) Defined bacterial-vaginosis (BV)-like communities including L. iners, L. crispatus, and BV-associated species Gardnerella vaginalis, Prevotella bivia, and Atopobium (Fannyhessea) vaginae cultured in S-broth with or without SMC and/or metronidazole.