3RZO

RNA Polymerase II Initiation Complex with a 4-nt RNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	DNA-directed RNA polymerase II subunit RPB1	polymer	1733	191821.6	1	UniProt (P04050) Pfam (PF04997) Pfam (PF05001) Pfam (PF00623) Pfam (PF04983) Pfam (PF05000) Pfam (PF04998) Pfam (PF04992) Pfam (PF04990) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerase II subunit 1, RNA polymerase II subunit B1, DNA-directed RNA polymerase III largest subunit, RNA polymerase II subunit B220
2	B	DNA-directed RNA polymerase II subunit RPB2	polymer	1224	138937.3	1	UniProt (P08518) Pfam (PF04563) Pfam (PF04561) Pfam (PF04565) Pfam (PF04566) Pfam (PF04567) Pfam (PF00562) Pfam (PF04560) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerase II subunit 2, B150, DNA-directed RNA polymerase II 140 kDa polypeptide
3	C	DNA-directed RNA polymerase II subunit RPB3	polymer	318	35330.5	1	UniProt (P16370) Pfam (PF01193) Pfam (PF01000) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerase II subunit 3, RNA polymerase II subunit B3, B44.5, DNA-directed RNA polymerase II 45 kDa polypeptide
4	E	DNA-directed RNA polymerases I, II, and III subunit RPABC1	polymer	215	25117.1	1	UniProt (P20434) Pfam (PF03871) Pfam (PF01191) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerases I, II, and III subunit ABC1, ABC27, DNA-directed RNA polymerases I, II, and III 27 kDa polypeptide
5	F	DNA-directed RNA polymerases I, II, and III subunit RPABC2	polymer	155	17931.8	1	UniProt (P20435) Pfam (PF01192) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerases I, II, and III subunit ABC2, ABC23, DNA-directed RNA polymerases I, II, and III 23 kDa polypeptide
6	H	DNA-directed RNA polymerases I, II, and III subunit RPABC3	polymer	146	16525.4	1	UniProt (P20436) Pfam (PF03870) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerases I, II, and III subunit ABC3, ABC14.4, ABC14.5, DNA-directed RNA polymerases I, II, and III 14.5 kDa polypeptide
7	I	DNA-directed RNA polymerase II subunit RPB9	polymer	122	14308.2	1	UniProt (P27999) Pfam (PF02150) Pfam (PF01096) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerase II subunit B9, B12.6, DNA-directed RNA polymerase II 14.2 kDa polypeptide, DNA-directed RNA polymerase II subunit 9
8	J	DNA-directed RNA polymerases I, II, and III subunit RPABC5	polymer	70	8290.7	1	UniProt (P22139) Pfam (PF01194) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerases I, II, and III subunit ABC5, ABC10-beta, ABC8, DNA-directed RNA polymerases I, II, and III 8.3 kDa polypeptide
9	K	DNA-directed RNA polymerase II subunit RPB11	polymer	120	13633.5	1	UniProt (P38902) Pfam (PF13656) Pfam (PF01193) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerase II subunit B11, B13.6, DNA-directed RNA polymerase II 13.6 kDa polypeptide
10	L	DNA-directed RNA polymerases I, II, and III subunit RPABC4	polymer	70	7730.0	1	UniProt (P40422) Pfam (PF03604) In PDB	Saccharomyces cerevisiae S288c (Baker's yeast)	RNA polymerases I, II, and III subunit ABC4, ABC10-alpha
11	R	RNA (5'-R(*GP*AP*GP*G)-3')	polymer	4	1319.9	1
12	T	DNA (5'-D(*CP*TP*AP*CP*CP*GP*AP*TP*AP*AP*GP*CP*AP*GP*AP*CP*GP*AP*TP*CP*CP*TP*CP*TP*CP*GP*AP*TP*G)-3')	polymer	29	8863.7	1
13	A, B, C, I, J...	ZINC ION	non-polymer		65.4	8	Chemie (ZN)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	479809.6
Non-Polymers*	Number of molecules	8
	Total formula weight	523.3
All*	Total formula weight	480332.8

*Water molecules are not included.