# Position Specific Scoring Matrix Definition and Explanation PDF Download

Learn *Position Specific Scoring Matrix* definition in bioinformatics with explanation to study “What is Position Specific Scoring Matrix”. Study position specific scoring matrix explanation with bioinformatics terms to review bioinformatics course for online degree programs.

## Position Specific Scoring Matrix Definition:

A table that contains probability information of amino acids or nucleotides at each position of an ungapped multiple sequence alignment.

Essential Bioinformatics by Jin Xiong

## Position Specific Scoring Matrix Explanation:

The Position Specific Scoring Matrix (PSSM) is a matrix obtained from the probability of multiple aligned sequences that are similar to each other in terms of sequences. This matrix is proposed by Gary Stormo.

### Keep Learning Bioinformatics Explanations

#### What is Unrooted Phylogenetic Tree?

An unrooted tree is an evolutionary tree in which root node is absent therefore, unrooted tree does not provide information ...

#### What is Knowledge Discovery?

Knowledge discovery means to analyze the newly discovered data and extract the useful information from that raw data. For example, ...

#### What is Gene Index Construction?

It is a method used to cluster annotated Expressed Sequence Tags (ESTs) by removing the duplications ...

#### What is E-Value?

The E-value is a probability value that tells a given sequence match is by chance. The higher the E-value, higher ...

#### What is Zero Order Markov Model?

Zero-order Markov model is a stochastic model in which the probability of next state does not depend on previous state. ...

#### What is Dichotomy?

In a phylogenetic tree, if all the nodes in a tree have two descendent lineages, then the tree is known ...