4HMP

Crystal structure of iron uptake ABC transporter substrate-binding protein PiaA from Streptococcus pneumoniae TIGR4

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, B)	Iron-compound ABC transporter, iron compound-binding protein	polymer	328	36514.6	2	UniProt (Q97R09) Pfam (PF01497) UniProt (by SIFTS) (A0A0H2UPT5)	Streptococcus pneumoniae
2	AA, BA, C, CA, D... (B, A)	CADMIUM ION	non-polymer		112.4	31	Chemie (CD)
3	LA, R (B, A)	TETRAETHYLENE GLYCOL	non-polymer		194.2	2	Chemie (PG4)
4	S (A)	GLYCEROL	non-polymer		92.1	1	Chemie (GOL)
5	T, U (A)	1,2-ETHANEDIOL	non-polymer		62.1	2	Chemie (EDO)
6	MA, NA (A, B)	water	water		18.0	79	Chemie (HOH)

Sequence modifications

A, B: 23 - 341 (UniProt: Q97R09)

PDB	External Database	Details
Mse 14	-	expression tag
Gly 15	-	expression tag
His 16	-	expression tag
His 17	-	expression tag
His 18	-	expression tag
His 19	-	expression tag
His 20	-	expression tag
His 21	-	expression tag
Mse 22	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	73029.2
Non-Polymers*	Number of molecules	36
	Total formula weight	4089.4
All*	Total formula weight	77118.6

*Water molecules are not included.