3KTV

Crystal structure of the human SRP19/S-domain SRP RNA complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	SRP RNA	polymer	108	35091.0	1	GenBank (NR_002715.1)	Homo sapiens (human)
2	B, D	Signal recognition particle 19 kDa protein	polymer	128	14791.1	2	UniProt (P09132) Pfam (PF01922) In PDB	Homo sapiens (human)	SRP19
3	C	SRP RNA	polymer	108	35170.9	1	GenBank (NR_002715.1)	Homo sapiens (human)
4	A, C, D	POTASSIUM ION	non-polymer		39.1	3	Chemie (K)
5	A, C	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)

Sequence modifications

A: 123 - 227 (GenBank: NR_002715.1)

PDB	External Database	Details
G 122	-	insertion
U 228	-	insertion
A 229	-	insertion

B, D: 1 - 120 (UniProt: P09132)

PDB	External Database	Details
Leu 121	-	expression tag
Glu 122	-	expression tag
His 123	-	expression tag
His 124	-	expression tag
His 125	-	expression tag
His 126	-	expression tag
His 127	-	expression tag
His 128	-	expression tag

C: 123 - 227 (GenBank: NR_002715.1)

PDB	External Database	Details
Gdp 122	-	insertion
U 228	-	insertion
A 229	-	insertion

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	99844.0
Non-Polymers*	Number of molecules	6
	Total formula weight	190.2
All*	Total formula weight	100034.2

*Water molecules are not included.