3VQX

Crystal structure of the catalytic domain of pyrrolysyl-tRNA synthetase in triclinic crystal form

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Pyrrolysine--tRNA ligase	polymer	291	33344.2	4	Pfam (PF01409) UniProt (by SIFTS) (Q8PWY1) In PDB	Methanosarcina mazei	Pyrrolysyl-tRNA synthetase, PylRS
2	A, B	ADENOSINE MONOPHOSPHATE	non-polymer		347.2	2	Chemie (AMP)
3	A, B, C, D	PHOSPHATE ION	non-polymer		95.0	4	Chemie (PO4)
4	C, D	[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl] (2S)-2-azanyl-6-[(2-methylpropan-2-yl)oxycarbonylamino]hexanoate	non-polymer		575.5	2	Chemie (BLK)
5		water	water		18.0	164	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	133376.7
Non-Polymers*	Number of molecules	8
	Total formula weight	2225.3
All*	Total formula weight	135602.0

*Water molecules are not included.