BlastP simply compares a protein query to a protein database. PSI-BLAST allows the user to build a PSSM (position-specific scoring matrix) using the results of the first BlastP run. PHI-BLAST performs the search but limits alignments to those that match a pattern in the query.

2025年3月17日 · The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence databases and calculates the statistical significance of matches.

BLAST (Basic Local Alignment Search Tool) is a widely used algorithm in bioinformatics that identifies regions of similarity between biological sequences (like proteins, DNA, or RNA). BLAST compares a query sequence to a database of sequences and finds matching segments, which can help researchers infer homologous genes, determine protein ...

BLAST（Basic Local Alignment Search Tool）局部相似性基本查询工具。 是由美国国立生物技术信息中心（NCBI）开发的一个基于序列相似性的数据库搜索程序。 该程序将核酸/蛋白质序列与公开数据库所有序列进行匹配比…

2023年10月9日 · tblastx: 先将待查询的核酸序列和核酸序列数据库中的核酸序列按六种可读框架翻译成蛋白质序列，然后再将两种翻译结果从蛋白质水平进行查询。 1，进入在线blast界面，可以选择blast特定的物种（如下）。 不同的blast程序上面已经有了介绍。 这里以常用的Blast 中 nucleotide blast 作为例子。 2，粘贴 fasta 格式的序列（可以是多条奥！ ）或使用Accession number（s）、gi（s）（注意仅使用数字，不加上标志符gi）。 选择一个要比对的数据库， …

Smart Blast searches a protein query against the landmark database Enter Protein Query Sequence Enter one protein accession, gi, or FASTA sequence [?]

UniProt is the world’s leading high-quality, comprehensive and freely accessible resource of protein sequence and functional information. Cite UniProt. The 'dark' side of male contraception | Changes to the controlled vocabulary of human diseases | Changes to the...

Blast Protein performs protein sequence searches using a BLAST web service hosted by the UCSF Resource for Biocomputing, Visualization, and Informatics (RBVI). Corresponding structures can be retrieved and automatically superimposed, and the pseudo-multiple alignment from BLAST can be shown in Multalign Viewer .

Links to taxonomy (organism name), protein (protein name, accession), and gene (locus_tag) entrez databases are available for each protein. The BLink shows precomputed BLAST results for that specific protein, while the BL2seq link runs a comparison of the query and that specific protein in the table using BLAST.

Choose from one of the protein BLAST databases listed below.