7QFK

Crystal structure of S-layer protein SlpX from Lactobacillus acidophilus, domain II, Co-Crystallization with HgCl2, Mutation Ser316Cys (aa 194-362)

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 (A, B, C, D)	SlpX	polymer	189	20313.9	4	UniProt (Q5FLN0)	Lactobacillus acidophilus
2	E, H (A, B)	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID	non-polymer		238.3	2	Chemie (EPE)
3	F, I (A, B)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
4	G, J, L, N (A, B, C, D)	BROMIDE ION	non-polymer		79.9	4	Chemie (BR)
5	K, M (C, D)	MERCURY (II) ION	non-polymer		200.6	2	Chemie (HG)
6	O, P, Q, R (A, B, C, D)	water	water		18.0	261	Chemie (HOH)

Sequence modifications

A, B, C, D: 184 - 362 (UniProt: Q5FLN0)

PDB	External Database	Details
Met 182	-	initiating methionine
Gly 183	-	expression tag
Cys 316	Ser 316	engineered mutation
Leu 363	-	expression tag
Glu 364	-	expression tag
His 365	-	expression tag
His 366	-	expression tag
His 367	-	expression tag
His 368	-	expression tag
His 369	-	expression tag
His 370	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	81255.5
Non-Polymers*	Number of molecules	10
	Total formula weight	1268.3
All*	Total formula weight	82523.8

*Water molecules are not included.