5XNH

Crystal structure of the branched-chain polyamine synthase (BpsA) in complex with spermidine

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, H)	N(4)-bis(aminopropyl)spermidine synthase	polymer	371	42445.9	2	UniProt (Q5JIZ3) Pfam (PF01861)	Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)	Branched-chain polyamine synthase A
2	C (A)	FE (III) ION	non-polymer		55.8	1	Chemie (FE)
3	D, E (A, H)	SPERMIDINE	non-polymer		145.2	2	Chemie (SPD)
4	F, G (A, H)	water	water		18.0	164	Chemie (HOH)

Sequence modifications

A, H: 1 - 353 (UniProt: Q5JIZ3)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	84891.9
Non-Polymers*	Number of molecules	3
	Total formula weight	346.3
All*	Total formula weight	85238.2

*Water molecules are not included.