8WCH

Crystal structure of SAR11_0655 bound to a co-purified ligand, L-pyroglutamate

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)	Probable Leu/Ile/Val-binding protein	polymer	417	45021.0	2	UniProt (Q4FMW4) Pfam (PF13458)	Candidatus Pelagibacter ubique HTCC1062
2	C, E (A, B)	PYROGLUTAMIC ACID	non-polymer		129.1	2	Chemie (PCA)
3	D, F (A, B)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4	G, H (A, B)	water	water		18.0	602	Chemie (HOH)

Sequence modifications

A, B: 22 - 417 (UniProt: Q4FMW4)

PDB	External Database	Details
Met 1	-	initiating methionine
Gly 2	-	expression tag
Ser 3	-	expression tag
Ser 4	-	expression tag
His 5	-	expression tag
His 6	-	expression tag
His 7	-	expression tag
His 8	-	expression tag
His 9	-	expression tag
His 10	-	expression tag
Ser 11	-	expression tag
Ser 12	-	expression tag
Gly 13	-	expression tag
Leu 14	-	expression tag
Val 15	-	expression tag
Pro 16	-	expression tag
Arg 17	-	expression tag
Gly 18	-	expression tag
Ser 19	-	expression tag
His 20	-	expression tag
Met 21	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	90041.9
Non-Polymers*	Number of molecules	4
	Total formula weight	304.2
All*	Total formula weight	90346.1

*Water molecules are not included.