5L8S

The crystal structure of a cold-adapted acylaminoacyl peptidase reveals a novel quaternary architecture based on the arm-exchange mechanism

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Amino acyl peptidase	polymer	604	69185.7	4	UniProt (E1VFE0) Pfam (PF00326) In PDB	Sporosarcina psychrophila	Peptidase S9
2	A, B, C, D	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)
3		water	water		18.0	476	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 596 (UniProt: E1VFE0)

PDB	External Database	Details
Leu 597	-	expression tag
Glu 598	-	expression tag
His 599	-	expression tag
His 600	-	expression tag
His 601	-	expression tag
His 602	-	expression tag
His 603	-	expression tag
His 604	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	276742.8
Non-Polymers*	Number of molecules	4
	Total formula weight	384.3
All*	Total formula weight	277127.0

*Water molecules are not included.