5CK3

Signal recognition particle receptor SRb-GTP/SRX complex from Chaetomium thermophilum

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	SRX domain	polymer	181	20568.2	3	UniProt (G0S1R8) Pfam (PF04086) In PDB	Chaetomium thermophilum
2	B, D, F	Putative signal recognition particle protein	polymer	307	33251.6	3	UniProt (G0S401) Pfam (PF09439) In PDB	Chaetomium thermophilum
3	B, D, F	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
4	B, D, F	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	3	Chemie (GTP)
5	B	GLYCEROL	non-polymer		92.1	1	Chemie (GOL)
6	B	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)

Sequence modifications

A, C, E: 3 - 173 (UniProt: G0S1R8)

PDB	External Database	Details
Met -7	-	initiating methionine
Lys -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
Met 1	-	expression tag
Ser 2	-	expression tag

B, D, F: 43 - 347 (UniProt: G0S401)

PDB	External Database	Details
Met 41	-	initiating methionine
Gly 42	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	161459.3
Non-Polymers*	Number of molecules	8
	Total formula weight	1830.6
All*	Total formula weight	163289.9

*Water molecules are not included.