2ZNI

Crystal structure of Pyrrolysyl-tRNA synthetase-tRNA(Pyl) complex from Desulfitobacterium hafniense

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Pyrrolysyl-tRNA synthetase	polymer	308	35481.7	2	UniProt (B0S4P3) Pfam (PF01409)	Desulfitobacterium hafniense	bacterial protein
2	C, D (C, D)	bacterial tRNA	polymer	72	23229.9	2
3	E, F, G, H, I... (C, D)	CALCIUM ION	non-polymer		40.1	13	Chemie (CA)

Sequence modifications

A, B: 1 - 288 (UniProt: B0S4P3)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	117423.0
Non-Polymers*	Number of molecules	13
	Total formula weight	521.0
All*	Total formula weight	117944.0

*Water molecules are not included.