4GKG

Crystal structure of the S-Helix Linker

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, F)	C4-dicarboxylate transport sensor protein dctB	polymer	67	7776.6	2	UniProt (P13633)	Sinorhizobium meliloti (Ensifer meliloti)
2	C, D, E (A, F)	PHOSPHATE ION	non-polymer		95.0	3	Chemie (PO4)
3	F, G (A, F)	water	water		18.0	74	Chemie (HOH)

Sequence modifications

A, F: 350 - 395 (UniProt: P13633)

PDB	External Database	Details
Met 329	-	expression tag
Gly 330	-	expression tag
Ser 331	-	expression tag
Ser 332	-	expression tag
His 333	-	expression tag
His 334	-	expression tag
His 335	-	expression tag
His 336	-	expression tag
His 337	-	expression tag
His 338	-	expression tag
Ser 339	-	expression tag
Ser 340	-	expression tag
Gly 341	-	expression tag
Leu 342	-	expression tag
Val 343	-	expression tag
Pro 344	-	expression tag
Arg 345	-	expression tag
Gly 346	-	expression tag
Ser 347	-	expression tag
His 348	-	expression tag
Met 349	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	15553.2
Non-Polymers*	Number of molecules	3
	Total formula weight	284.9
All*	Total formula weight	15838.1

*Water molecules are not included.