5L3S

Structure of the GTPase heterodimer of crenarchaeal SRP54 and FtsY

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E, G	Signal recognition particle 54 kDa protein	polymer	298	33113.2	4	UniProt (Q97ZE7) Pfam (PF02881) Pfam (PF00448) In PDB	Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)	SRP54
2	B, D, F, H	Signal recognition particle receptor FtsY	polymer	296	33440.3	4	UniProt (P27414) Pfam (PF02881) Pfam (PF00448) In PDB	Sulfolobus acidocaldarius	SRP receptor,Docking protein,P41
3	D, A, E, F, B...	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER	non-polymer		522.2	8	Chemie (GNP)
4	C, D, A, E, F...	MAGNESIUM ION	non-polymer		24.3	8	Chemie (MG)
5	C, A, E, G	GUANOSINE-5'-MONOPHOSPHATE	non-polymer		363.2	4	Chemie (G)
6	H, C, D, A, E...	GLYCEROL	non-polymer		92.1	18	Chemie (GOL)
7	H, C, E, A, B...	SULFATE ION	non-polymer		96.1	9	Chemie (SO4)
8		water	water		18.0	1214	Chemie (HOH)

Sequence modifications

A, C, E, G: 1 - 292 (UniProt: Q97ZE7)

PDB	External Database	Details
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

B, D, F, H: 79 - 368 (UniProt: P27414)

PDB	External Database	Details
His 73	-	expression tag
His 74	-	expression tag
His 75	-	expression tag
His 76	-	expression tag
His 77	-	expression tag
His 78	-	expression tag
Lys 279	Arg 279	conflict

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	266214.2
Non-Polymers*	Number of molecules	47
	Total formula weight	8347.2
All*	Total formula weight	274561.4

*Water molecules are not included.