7XIF

Crystal structure of the aminopropyltransferase, SpeE from hyperthermophilic crenarchaeon, Pyrobaculum calidifontis in complex with 5'-methylthioadenosine (MTA) alone or together with spermidine or thermospermine

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, E... (A, B, C, D, E...)	Polyamine aminopropyltransferase	polymer	309	34859.8	12	UniProt (A3MU81) Pfam (PF17284) Pfam (PF01564)	Pyrobaculum calidifontis	Putrescine aminopropyltransferase,PAPT,Spermidine synthase,SPDS,SPDSY
2	AA, CA, DA, EA, FA... (H, I, J, K, L...)	5'-DEOXY-5'-METHYLTHIOADENOSINE	non-polymer		297.3	12	Chemie (MTA)
3	BA, N, P, R, T (H, A, B, C, D)	SPERMIDINE	non-polymer		145.2	5	Chemie (SPD)
4	V, X, Z (E, F, G)	N-(3-AMINO-PROPYL)-N-(5-AMINOPROPYL)-1,4-DIAMINOBUTANE	non-polymer		202.3	3	Chemie (TER)
5	GA, HA, IA, JA, KA... (A, B, C, D, E...)	water	water		18.0	1206	Chemie (HOH)

Sequence modifications

A, B, C, D, E, F, G, H, I, J, K, L: 1 - 289 (UniProt: A3MU81)

PDB	External Database	Details
Met -19	-	initiating methionine
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	12
	Total formula weight	418317.1
Non-Polymers*	Number of molecules	20
	Total formula weight	4901.3
All*	Total formula weight	423218.4

*Water molecules are not included.