3H37

The structure of CCA-adding enzyme apo form I

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	TRNA nucleotidyl transferase-related protein	polymer	441	51999.6	2	UniProt (Q9WZH4) Pfam (PF01743) Pfam (PF12627) In PDB	Thermotoga maritima	tRNA nucleotidyltransferase, tRNA adenyl-/cytidyl-transferase, tRNA CCA-pyrophosphorylase, tRNA-NT
2		water	water		18.0	36	Chemie (HOH)

Sequence modifications

A, B: 2 - 428 (UniProt: Q9WZH4)

PDB	External Database	Details
Mse 1	-	EXPRESSION TAG
Lys 429	-	EXPRESSION TAG
Leu 430	-	EXPRESSION TAG
Ala 431	-	EXPRESSION TAG
Ala 432	-	EXPRESSION TAG
Ala 433	-	EXPRESSION TAG
Leu 434	-	EXPRESSION TAG
Glu 435	-	EXPRESSION TAG
His 436	-	EXPRESSION TAG
His 437	-	EXPRESSION TAG
His 438	-	EXPRESSION TAG
His 439	-	EXPRESSION TAG
His 440	-	EXPRESSION TAG
His 441	-	EXPRESSION TAG

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	103999.1
All*	Total formula weight	103999.1

*Water molecules are not included.