HBV分析

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https://zhanglab.ccmb.med.umich.edu/I-TASSER/.
结构预测

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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229894/
四医大肖老师提供的一个文章这个使用clone测序方法对HBV的全长进行了测序

组装：Contig-Express 和Codon Code Aligner
序列对齐：MEGAX Clustal X

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Inference with viral quasispecies diversity indices: Clonal and
NGS approaches

对突变频率香农熵做了详细分析

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https://www.yacinemahdid.com/shannon-entropy-from-theory-to-python/
香农熵的python实现

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https://elifesciences.org/articles/61803
The haplotypes for each sample were reconstructed for each gene segment using a previously published pipeline (Cacciabue et al., 2020). In brief, FastQC (Andrews, 2010) was used for quality assurance of the NGS paired-end raw reads followed by BBtools (Bushnell, 2014), for removing and filtering adapters and low-quality reads. Bowtie2 (Langmead and Salzberg, 2012), an aligner tool to align the trimmed reads to the selected reference of the influenza strain (i.e. the inoculum), was then used. Samtools suite (Li et al., 2009) was used to sort, index, and generate depth and coverage statistics for read alignment files. Next, CliqueSNV (Knyazev, 2020) was used to infer the haplotypes and frequencies for all eight gene segments for each sample.

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https://www.sciencedirect.com/science/article/pii/S004268221630037X

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走一遍qap的流程
1.fqc

docker run -v /home/bioinfo/hbv_pipeline/data:/data anneng01:8090/app/fqc fqc qc hbv s1 /data/SRR6378032_1.fastq.gz --r2 /data/SRR6378032_2.fastq.gz -o /data/qc/

2.cutadapt
具体算法见
https://cutadapt.readthedocs.io/en/stable/guide.html?highlight=max-n#dealing-with-n-bases

docker run -v /home/bioinfo/hbv_pipeline/:/workplace pegi3s/cutadapt -q 1 --max-n 0 --minimum-length 10 -o /workplace/data/SRR6378032_1.cleaned.fastq.gz -p /workplace/data/SRR6378032_2.cleaned.fastq.gz /workplace/data/SRR6378032_1.fastq.gz /workplace/data/SRR6378032_2.fastq.gz

-q 按照质量值进行过滤
--max-n 按N碱基数量进行过滤
--minimum-length 按长度进行过滤
-o R1的输出
-p R2的输出

3.qap的环状参考基因组修复过程涉及了几个自己的perl和R脚本算法质量情况不明确我们采用下面的软件来替代：
https://github.com/apeltzer/CircularMapper
java -jar generator-1.93.5.jar CircularGenerator -e 20 -i ../data/demo.fasta -s "AB033556.1"
这个软件有个bug fasta中的序列id不能包括空格有空格的话就找不到这条序列导致没有进行处理处理的算法很简单就是从头部取一定的碱基数量加到尾部
本步骤要做成一个cwl的选择项只有环状基因组需要执行这个步骤
参考序列处理完毕后就可以使用新生成的参考序列进行比对（BWA、Bowtie2等）但是比对完毕后要继续使用另外一个模块(RealignSAMFile.jar)进行重新对齐

4.序列比对
docker run -v /home/bioinfo/hbv_pipeline/data/:/data anneng01:8090/library/angs_bwa:1.0.0 bwa mem -M /data/HBV_C_AB033556_150.fasta /data/SRR6377924_1.fastq.gz /data/SRR6377924_2.fastq.gz -o /data/SRR6377924.sam

//下面的命令不支持bwa mem 的结果 先不执行
java -jar RealignSAMFile.jar -e 500 -i SRR6377924.sam -r HBV_C_AB033556.fasta

过滤没有比对上的序列
docker run -v /home/bioinfo/hbv_pipeline/:/work jweinstk/samtools samtools view -bF 4 /work/mapping/SRR6377924.sam -o /work/mapping/SRR6377924.bam

5.去除PCR重复

docker run -v /home/bioinfo/hbv_pipeline/:/work quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools collate -o /work/mapping/SRR6377924.namecollate.bam /work/mapping/SRR6377924.bam

docker run -v /home/bioinfo/hbv_pipeline/:/work quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools fixmate -m /work/mapping/SRR6377924.namecollate.bam  /work/mapping/SRR6377924.fixmate.bam

docker run -v /home/bioinfo/hbv_pipeline/:/work quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools sort -o /work/mapping/SRR6377924.sorted.bam /work/mapping/SRR6377924.fixmate.bam

docker run -v /home/bioinfo/hbv_pipeline/:/work quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools markdup -r  /work/mapping/SRR6377924.sorted.bam /work/mapping/SRR6377924.sorted.rmdup.bam

6.call snp

docker run -v /home/bioinfo/hbv_pipeline/:/workplace quay.io/biocontainers/lofreq:broken---2.5.1--py38h1bd3507_2 lofreq call -f /workplace/data/HBV_C_AB033556_150.fasta -o /workplace/calling/SRR6377924.vcf /workplace/mapping/SRR6377924.sorted.rmdup.bam

7.merge R1 R2

docker run -v /home/bioinfo/hbv_pipeline/:/workhome quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools view -h -o /workhome/mapping/SRR6377924.sorted.rmdup.sam /workhome/mapping/SRR6377924.sorted.rmdup.bam

docker run -v /home/bioinfo/hbv_pipeline/:/workhome quay.io/biocontainers/samtools:1.15.1--h1170115_0 samtools fasta -1 /workhome/merging/SRR6377924_R1.fasta -2 /workhome/merging/SRR6377924_R2.fasta  -0 /dev/null -s /dev/null -n  /workhome/mapping/SRR6377924.sorted.rmdup.sam

docker run -v /home/bioinfo/hbv_pipeline/:/workplace staphb/bbtools bbmerge.sh in1=/workplace/merging/SRR6377924_R1.fasta in2=/workplace/merging/SRR6377924_R2.fasta out=/workplace/merging/SRR6377924_QS.fasta

//======有异常先不用这个软件====

wget https://github.91chi.fun//https://github.com//neufeld/pandaseq/archive/refs/tags/v2.11.tar.gz
tar xvfz v2.11.tar.gz
sudo apt-get install build-essential libtool automake zlib1g-dev libbz2-dev pkg-config
./autogen.sh && ./configure && make && sudo make install

wget https://github.91chi.fun//https://github.com//neufeld/pandaseq-sam/archive/refs/tags/v1.4.tar.gz
./autogen.sh && ./configure && make && sudo make install

//==========================

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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8656693/
The Impact of HBV Quasispecies Features on Immune Status in HBsAg+/HBsAb+ Patients With HBV Genotype C Using Next-Generation Sequencing

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https://virologyj.biomedcentral.com/articles/10.1186/s12985-022-01836-9
Quality evaluation of raw reads was performed with the online tool fastqc (http:// www.bioinformatics.babraham.ac.uk/projects/fastqc/), and the reads having average base calling quality score under 20 were discarded. After quality filtration and adapter removal, paired-end reads were joined with FLASH, v1.2.10 [31]. Merged preS region sequence was genotyped with HBV STAR software as reported previously [32], and corresponding preS regions of 23 reference HBV genomes from the GenBank database were used for genotyping (Accession numbers: X02763, X51970, AF090842, D00329, AB073846, AB602818, X04615, AY123041, AB014381, X65259, M32138, X85254, X75657, AB032431, X69798, AB036910, AF223965, AF160501, AB064310, AF405706, AY090454, AY090457, AY090460). The genotype of each sample was defined as the most frequent one among all 8 types from A to H.

Data preprocessing and predictors
After sequencing the quasispecies, we collected the point mutation data for 457 positions including the positions from 1 to 61 and 2820 to 3215 in and close to the preS region. We counted the frequencies of the nucleotides in each position. To describe the mutation complexity in each position, we transformed the frequency data to Shannon entropy, which is defined as H=−∑ipilogpi, ∑ipi=1 where i∈{A,C,G,T} and pi is its frequency, xlog(x)=0 when x = 0. Entropy of all the 457 nucleotide positions of preS region were used as predictors for HCC diagnosis.

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Amino acid occurrence frequency
https://sci-hub.st/10.1145/3386052.3386077
Identification of the Association between Hepatitis B Virus
and Liver Cancer using Machine Learning Approaches
based on Amino Acid

使用blast对其reads 然后根据密码子转换成氨基酸

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https://www.intechopen.com/chapters/75997
Entropy Based Biological Sequence Study