1TFY

How CCA is added to the 3' end of immature tRNA without the use of an oligonucleotide template

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (E, F)	5'-R(*GP*CP*GP*GP*AP*UP*AP*UP*CP*CP*GP*CP*G)-3'	polymer	13	4172.5	2
2	B, D (H, I)	5'-R(*GP*CP*GP*GP*AP*UP*AP*UP*CP*CP*GP*CP*AP*C)-3'	polymer	14	4461.7	2
3	E (G)	5'-R(*CP*GP*GP*AP*UP*CP*CP*GP*CP*AP*C)-3'	polymer	11	3481.1	1
4	F (J)	5'-R(*CP*GP*CP*GP*GP*AP*UP*C)-3'	polymer	8	2541.6	1
5	G, H, I, J (A, B, C, D)	tRNA nucleotidyltransferase	polymer	437	51469.1	4	UniProt (O28126) Pfam (PF01909) Pfam (PF09249) Pfam (PF21133)	Archaeoglobus fulgidus	tRNA adenylyltransferase, tRNA CCA-pyrophosphorylase, CCA-adding enzyme
6	K, M, O, Q (A, B, C, D)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
7	L, N, P, R (A, B, C, D)	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	4	Chemie (CTP)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	229167.8
Non-Polymers*	Number of molecules	8
	Total formula weight	2029.8
All*	Total formula weight	231197.6

*Water molecules are not included.