Tariq Abdullah

Tariq is founder of Bioinformatics Review and a professional Software Developer at IQL Technologies. His areas of expertise include algorithm design, phylogenetics, MicroArray, Plant Systematics, and genome data analysis. If you have questions, reach out to him via his homepage.

Homology search against a local dataset using NCBI-BLAST+ command-line tool


NCBI-BLAST+ [1] command-line tool offers multiple functions to be performed on a large dataset of sequences. Previously, we have shown how to blast against a local dataset of sequences. This article will explain the search of homologous sequences for a query sequence against a local database of sequences and how to obtain the top 100 hits out of the searched results. Keep Reading

Modifying multi-FASTA files using Bash: ‘Sed’ Command

Dealing with thousands of FASTA sequences is a tedious task without using bioinformatics programming. It eases multiple minute tasks to be performed on FASTA sequences or their headers such as removal, addition, or substitution of certain characters in the header, or manipulating the sequence format, and so on. In such cases, shell bash commands provide an easy way to perform such tasks on FASTA sequences. Keep Reading

Multiple Sequence Alignment and Phylogenetic Tree construction using ClustalW2 command-line tool

ClustalW2 is a bioinformatics tool for multiple sequence alignment of DNA or protein sequences. It can easily align sequences and generate a phylogenetic tree online (https://www.genome.jp/tools-bin/clustalw). However, in some cases, we need to perform these operations on a large number of FASTA sequences using the command-line tool of ClustalW2 [1]. Keep Reading

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