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High-throughput Annotation of Modified Ribonucleotides -- HAMR http://tesla.pcbi.upenn.edu/hamr
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HAMR takes in a coordinate-sorted BAM file with mapped reads. Reads should be mapped with m>0 mismatches: patterns of mismatches will be used to detect and predict identity of modifications. HAMR outputs predicted modification sites including identity of the modifications. NOTE: Spliced alignments (with N in CIGAR string) in BAM will be ignored. Alignments with insertion/deletions will be ignored. Only continuous, un-interrupted read alignments will be used. Any spliced alignments should be resolved (e.g., by splitting) before running HAMR, e.g., using GATK java -jar GenomeAnalysisTK.jar -T SplitNCigarReads -R <genome.fa> -I <input.bam> -o <input.splitN.bam> -U ALLOW_N_CIGAR_READS Installing HAMR: HAMR includes pre-compiled binary programs. If neccessary, to re-compile use make clean make Operating instructions: Usage: python hamr.py [align.bam] [genome.fa] [prediction_model_file] [output_dir] [output_prefix] [min_read_qual] [min_read_coverage] [seq_error_rate] [hypothesis] [max_p] [max_fdr] [min_ref_percent] [OPTIONS] Examples: # download reference genome (e.g., hg19) wget http://tesla.pcbi.upenn.edu/hamr/genomes/hg19_all_chr.fas # run HAMR in genome-wide mode python hamr.py trial.human.bam genomes/hg19_all_chr.fas models/euk_trna_mods.Rdata HAMRtest human 30 10 0.05 H4 0.01 0.05 0.05 # run HAMR in target mode (BED-restricted) python hamr.py trial.human.bam genomes/hg19_all_chr.fas models/euk_trna_mods.Rdata HAMRtest human_region 30 10 0.05 H4 0.01 0.05 0.05 --target_bed region.human.bed NOTE: Python with version v2.7.x is preferred. Rscript and samtools are required for running HAMR (make sure they are in searchable path). REQUIRED arguments: <align.bam> input BAM file <genome.fa> reference genome FASTA file (should be the same as the genome file used in mapping (input BAM). NOTE: remember to index the reference genome using samtools faidx before running HAMR. <min_read_qual> the minimum base calling quality score. All low-quality bases will removed from analysis <min_read_cov> the minimum read coverage of a genomic position for it to be analyzed <seq_error_rate> The expected percentage of mismatches based solely on sequencing error <hypothesis> The hypothesis to be tested, either "H1" or "H4" (see HAMR paper. H4 is recommended). <max_p> the maximum p-value cutoff. All sites with P-value><max_p> will be filtered out. <max_fdr> the maximum FDR cutoff <refpercent> the minimum percentage of reads that must match the reference nucleotide. All sites with reference read nucleotide proportion < <refpercent> will be filtered out <output_dir> directory for the HAMR output <output_prefix> prefix for HAMR output files OPTIONS: --target_bed <targets.bed> BED file with regions of interest for HAMR analysis (this replaces the default genome-wide HAMR mode and restricts HAMR analysis to specific genomic regions listed in BED) --paired_ends, -pe indicates paired-end sequencing was used --filter_ends,-fe excludes the first and last positions in the read from the analysis Copyright: Copyright (c) 2013-2016 University of Pennsylvania Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.