1B6B

MELATONIN BIOSYNTHESIS: THE STRUCTURE OF SEROTONIN N-ACETYLTRANSFERASE AT 2.5 A RESOLUTION SUGGESTS A CATALYTIC 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	PROTEIN (ARYLALKYLAMINE N-ACETYLTRANSFERASE)	polymer	174	19556.5	2	UniProt (Q29495) Pfam (PF00583) In PDB	Ovis aries (sheep)
2		water	water		18.0	132	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	39113.0
All*	Total formula weight	39113.0

*Water molecules are not included.