8CAZ

empty 30S head

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	4	Large ribosomal subunit protein bL31A	polymer	70	7887.1	1	UniProt (P0A7M9) Pfam (PF01197) In PDB	Escherichia coli BW25113	50S ribosomal protein L31
2	A	16S rRNA	polymer	1540	499124.8	1	GenBank (2073407)	Escherichia coli BW25113
3	B	30S ribosomal protein S2	polymer	241	26781.7	1	UniProt (P0A7V0) Pfam (PF00318) In PDB	Escherichia coli BW25113	Small ribosomal subunit protein uS2
4	C	Small ribosomal subunit protein uS3	polymer	233	26031.3	1	UniProt (P0A7V3) Pfam (PF07650) Pfam (PF00189) In PDB	Escherichia coli BW25113	30S ribosomal protein S3
5	G	30S ribosomal protein S7	polymer	179	20055.2	1	UniProt (P02359) Pfam (PF00177) In PDB	Escherichia coli BW25113	Small ribosomal subunit protein uS7
6	I	Small ribosomal subunit protein uS9	polymer	130	14886.3	1	UniProt (P0A7X3) Pfam (PF00380) In PDB	Escherichia coli BW25113	30S ribosomal protein S9
7	J	Small ribosomal subunit protein uS10	polymer	103	11755.6	1	UniProt (P0A7R5) Pfam (PF00338) In PDB	Escherichia coli BW25113	30S ribosomal protein S10,Transcription termination/antitermination protein NusE
8	M	Small ribosomal subunit protein uS13	polymer	118	13128.5	1	UniProt (P0A7S9) Pfam (PF00416) In PDB	Escherichia coli BW25113	30S ribosomal protein S13
9	N	Small ribosomal subunit protein uS14	polymer	101	11606.6	1	UniProt (P0AG59) Pfam (PF00253) In PDB	Escherichia coli BW25113	30S ribosomal protein S14
10	S	Small ribosomal subunit protein uS19	polymer	92	10455.4	1	UniProt (P0A7U3) Pfam (PF00203) In PDB	Escherichia coli BW25113	30S ribosomal protein S19
11	A, M	POTASSIUM ION	non-polymer		39.1	13	Chemie (K)
12	A	MAGNESIUM ION	non-polymer		24.3	29	Chemie (MG)
13		water	water		18.0	618	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	641712.3
Non-Polymers*	Number of molecules	42
	Total formula weight	1213.1
All*	Total formula weight	642925.4

*Water molecules are not included.