3H3A

The complex structure of CCA-adding enzyme with CTP

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)	TRNA nucleotidyl transferase-related protein	polymer	441	51530.6	2	UniProt (Q9WZH4) Pfam (PF01743) Pfam (PF12627)	Thermotoga maritima	tRNA nucleotidyltransferase, tRNA adenyl-/cytidyl-transferase, tRNA CCA-pyrophosphorylase, tRNA-NT
2	C, D (A, B)	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	2	Chemie (CTP)
3	E, F (A, B)	water	water		18.0	17	Chemie (HOH)

Sequence modifications

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

PDB	External Database	Details
Met 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	103061.2
Non-Polymers*	Number of molecules	2
	Total formula weight	966.3
All*	Total formula weight	104027.5

*Water molecules are not included.