4R9M

Crystal structure of spermidine N-acetyltransferase from Escherichia coli

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 (A, B, C)	Spermidine N(1)-acetyltransferase	polymer	210	24664.0	3	UniProt (P0A951) Pfam (PF00583)	Escherichia coli	Diamine acetyltransferase, SAT
2	D (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	E, F, G (A, B, C)	water	water		18.0	21	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 186 (UniProt: P0A951)

PDB	External Database	Details
Met -23	-	expression tag
His -22	-	expression tag
His -21	-	expression tag
His -20	-	expression tag
His -19	-	expression tag
His -18	-	expression tag
His -17	-	expression tag
Ser -16	-	expression tag
Ser -15	-	expression tag
Gly -14	-	expression tag
Val -13	-	expression tag
Asp -12	-	expression tag
Leu -11	-	expression tag
Gly -10	-	expression tag
Thr -9	-	expression tag
Glu -8	-	expression tag
Asn -7	-	expression tag
Leu -6	-	expression tag
Tyr -5	-	expression tag
Phe -4	-	expression tag
Gln -3	-	expression tag
Ser -2	-	expression tag
Asn -1	-	expression tag
Ala 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	73991.9
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	74016.2

*Water molecules are not included.