How can I read a DNA sequence (Fasta file ) from NCBI and store it in array or in a specific variable

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Radhwan Jawad 2022-11-22

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https://ww2.mathworks.cn/matlabcentral/answers/1859958-how-can-i-read-a-dna-sequence-fasta-file-from-ncbi-and-store-it-in-array-or-in-a-specific-variabl

回答： Smit 2023-2-10

I want to click on command in my window to enter the Accession Number of the sequence, then the output must be for example S=ATCCTGGAA....

i am try this code, but does not work

%% Read sequence data from FASTA files

s = fastaread('AC168908.txt')

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Answer 1

Smit 2023-2-10

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Hi,

I understand you want to read the DNA sequence from a FASTA file.

The function “fastaread” will read the FASTA file and store the data in a structure. This structure also contains the DNA sequence. So, all you need to do extract the sequence access the “Sequence” field in the structure in the following manner

sequence = s.Sequence;

For more information on “fastaread” you can visit the documentation page.