2IY9

Crystal structure of the A-subunit of the AB5 toxin from E. coli

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0004252	molecular_function	serine-type endopeptidase activity
A	0006508	biological_process	proteolysis
A	0008236	molecular_function	serine-type peptidase activity

Functional Information from PROSITE/UniProt

site_id	PS00014
Number of Residues	4
Details	ER_TARGET Endoplasmic reticulum targeting sequence. SEEL

Chain	Residue	Details
A	SER344-LEU347

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Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	3
Details	ACT_SITE: Charge relay system => ECO:0000255|PROSITE-ProRule:PRU01240, ECO:0000303|PubMed:15226357

Chain	Residue	Details
A	ASP52
A	HIS89
A	SER272

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