7XYA

The cryo-EM structure of an AlpA-loading complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	DNA-directed RNA polymerase subunit alpha	polymer	333	36694.6	2	UniProt (O52760) Pfam (PF01193) Pfam (PF01000) Pfam (PF03118) In PDB	Pseudomonas aeruginosa	RNAP subunit alpha,RNA polymerase subunit alpha,Transcriptase subunit alpha
2	C	DNA-directed RNA polymerase subunit beta	polymer	1357	151037.0	1	UniProt (Q51561) Pfam (PF04560) Pfam (PF04563) Pfam (PF04561) Pfam (PF04565) Pfam (PF10385) Pfam (PF00562) In PDB	Pseudomonas aeruginosa	RNAP subunit beta,RNA polymerase subunit beta,Transcriptase subunit beta
3	D	DNA-directed RNA polymerase subunit beta'	polymer	1399	154595.0	1	UniProt (Q9HWC9) Pfam (PF04997) Pfam (PF00623) Pfam (PF04983) Pfam (PF05000) Pfam (PF04998) In PDB	Pseudomonas aeruginosa	RNAP subunit beta',RNA polymerase subunit beta',Transcriptase subunit beta'
4	E	DNA-directed RNA polymerase subunit omega	polymer	88	9783.9	1	UniProt (Q9HTM1) Pfam (PF01192) In PDB	Pseudomonas aeruginosa	RNAP omega subunit,RNA polymerase omega subunit,Transcriptase subunit omega
5	F	RNA polymerase sigma factor RpoD	polymer	617	69742.8	1	UniProt (P26480) Pfam (PF03979) Pfam (PF00140) Pfam (PF04546) Pfam (PF04542) Pfam (PF04539) Pfam (PF04545) In PDB	Pseudomonas aeruginosa	Sigma-70
6	N	nontemplate strand DNA	polymer	62	19159.3	1		Pseudomonas aeruginosa
7	R	RNA	polymer	12	3756.3	1		Pseudomonas aeruginosa
8	T	template strand DNA	polymer	62	19230.3	1		Pseudomonas aeruginosa
9	G	AlpA	polymer	176	20315.6	1	UniProt (A0A2R3ITY7) In PDB	Pseudomonas aeruginosa
10	D	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	521009.3
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	521033.6

*Water molecules are not included.