4WC2

Crystal structure of tRNA nucleotidyltransferase complexed with a primer tRNA and an incoming ATP analog

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Poly A polymerase	polymer	396	46550.7	1	UniProt (O66728) Pfam (PF01743) In PDB	Aquifex aeolicus	A-adding enzyme
2	B	RNA 75-mer	polymer	75	24155.3	1	GenBank (12057205)	Thermotoga maritima MSB8
3	A	DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER	non-polymer		505.2	1	Chemie (APC)
4	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)

Sequence modifications

A: 2 - 383 (UniProt: O66728)

PDB	External Database	Details
Met 1	-	expression tag
Lys 384	-	expression tag
Leu 385	-	expression tag
Ala 386	-	expression tag
Ala 387	-	expression tag
Ala 388	-	expression tag
Leu 389	-	expression tag
Glu 390	-	expression tag
His 391	-	expression tag
His 392	-	expression tag
His 393	-	expression tag
His 394	-	expression tag
His 395	-	expression tag
His 396	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	70706.1
Non-Polymers*	Number of molecules	2
	Total formula weight	529.5
All*	Total formula weight	71235.6

*Water molecules are not included.