modify header of sequencs in fasta file

Question

[Jason]

Hello everybody, I am not and expert with sed and I am sure that someone will do this work faster and better than me.

I would like to edit multiple fasta header from this format.

>NV_000007.1 very long-chain specific acyl-CoA dehydrogenase, mitochondrial isoform 1 precursor [Homo sapiens]
MQAARMAASLGRQLLRLGGGSSRLTALLGQPRPGPARRPYAGGAAQLALDKSDSHPSDALTRKKPAKAES

Result should be like below:

>sp|NV_000007.1|very long-chain specific acyl-CoA dehydrogenase, mitochondrial isoform 1 precursor [Homo sapiens]
MQAARMAASLGRQLLRLGGGSSRLTALLGQPRPGPARRPYAGGAAQLALDKSDSHPSDALTRKKPAKAES

Answer 1

[Pierre Lindenbaum]

sed 's/^>/>sp|/;/^>/s/ /|/'