4WVG

Crystal structure of the Type-I signal peptidase from Staphylococcus aureus (SpsB).

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Maltose-binding periplasmic protein,Signal peptidase IB	polymer	542	60301.9	1	UniProt (P0AEY0) UniProt (Q5HHB9) Pfam (PF01547) Pfam (PF10502) UniProt (by SIFTS) (P0AEX9)	Escherichia coli K-12	MBP,MMBP,Maltodextrin-binding protein,SPase IB,Leader peptidase IB
2	B (B)	alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	branched		342.3	1	In PDB BIRD (PRD_900001) GlyTouCan (G07411ON)		alpha-maltose
3	C (A)	water	water		18.0	356	Chemie (HOH)

Sequence modifications

A: 13 - 372 (UniProt: P0AEY0)

PDB	External Database	Details
Met 1	-	initiating methionine
Ser 2	-	expression tag
Tyr 3	-	expression tag
Tyr 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
His 11	-	expression tag
Met 12	-	expression tag
Gln 28	Glu 48	see remark 999
Asn 373	Arg 393	see remark 999
Ala 374	-	linker
Gly 375	-	linker
Ala 376	-	linker

A: 377 - 542 (UniProt: Q5HHB9)

PDB	External Database	Details
Ala 387	Ser 36	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	60301.9
Branched	Number of molecules	1
	Total formula weight	342.3
All*	Total formula weight	60644.2

*Water molecules are not included.