3KYH

Saccharomyces cerevisiae Cet1-Ceg1 capping apparatus

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	mRNA-capping enzyme subunit beta	polymer	310	35525.3	2	UniProt (O13297) Pfam (PF02940) In PDB	Saccharomyces cerevisiae (brewer's yeast lager beer yeast yeast)	Polynucleotide 5'-triphosphatase, mRNA 5'-triphosphatase, TPase
2	C, D	mRNA-capping enzyme subunit alpha	polymer	461	53030.3	2	UniProt (Q01159) Pfam (PF01331) Pfam (PF03919) In PDB	Saccharomyces cerevisiae (brewer's yeast lager beer yeast yeast)	mRNA guanylyltransferase, GTP--RNA guanylyltransferase, GTase

Sequence modifications

A, B: 241 - 549 (UniProt: O13297)

PDB	External Database	Details
Met 240	-	initiating methionine

C, D: 1 - 459 (UniProt: Q01159)

PDB	External Database	Details
Ser -1	-	expression tag
Leu 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	177111.2
All*	Total formula weight	177111.2

*Water molecules are not included.