Number of PDB entries of each oligomer type

Oligomer types	Number of Chain Formulas
Monomer	5328	(42.95%)
Homo oligomer	3725	(30.03%)
Hetero oligomer	2440	(19.67%)
No proteins	911	(7.34%)
Total	12404

Number of Protein Chains

Number of Protein Chains	Homo oligomers		Hetero oligomers		Total
2	1749	(14.1%)	535	(4.31%)	2284	(18.41%)
3	650	(5.24%)	431	(3.47%)	1081	(8.71%)
4	739	(5.96%)	382	(3.08%)	1121	(9.04%)
5	216	(1.74%)	197	(1.59%)	413	(3.33%)
6	80	(0.64%)	207	(1.67%)	287	(2.31%)
7	63	(0.51%)	25	(0.2%)	88	(0.71%)
8	58	(0.47%)	95	(0.77%)	153	(1.23%)
9	15	(0.12%)	37	(0.3%)	52	(0.42%)
10	18	(0.15%)	36	(0.29%)	54	(0.44%)
11	14	(0.11%)	23	(0.19%)	37	(0.3%)
12	23	(0.19%)	80	(0.64%)	103	(0.83%)
13	3	(0.02%)	29	(0.23%)	32	(0.26%)
14	13	(0.1%)	21	(0.17%)	34	(0.27%)
15	13	(0.1%)	20	(0.16%)	33	(0.27%)
16	11	(0.09%)	25	(0.2%)	36	(0.29%)
17	0	(0%)	10	(0.08%)	10	(0.08%)
18	2	(0.02%)	26	(0.21%)	28	(0.23%)
19	0	(0%)	3	(0.02%)	3	(0.02%)
20	2	(0.02%)	33	(0.27%)	35	(0.28%)
21	4	(0.03%)	7	(0.06%)	11	(0.09%)
22	4	(0.03%)	24	(0.19%)	28	(0.23%)
23	0	(0%)	6	(0.05%)	6	(0.05%)
24	3	(0.02%)	6	(0.05%)	9	(0.07%)
25	1	(0.01%)	0	(0%)	1	(0.01%)
26	1	(0.01%)	30	(0.24%)	31	(0.25%)
27	1	(0.01%)	1	(0.01%)	2	(0.02%)
28	0	(0%)	4	(0.03%)	4	(0.03%)
29	0	(0%)	9	(0.07%)	9	(0.07%)
30	2	(0.02%)	6	(0.05%)	8	(0.06%)
31	1	(0.01%)	17	(0.14%)	18	(0.15%)
32	0	(0%)	7	(0.06%)	7	(0.06%)
33	2	(0.02%)	5	(0.04%)	7	(0.06%)
34	0	(0%)	7	(0.06%)	7	(0.06%)
35	14	(0.11%)	2	(0.02%)	16	(0.13%)
36	1	(0.01%)	9	(0.07%)	10	(0.08%)
37	0	(0%)	1	(0.01%)	1	(0.01%)
38	1	(0.01%)	12	(0.1%)	13	(0.1%)
39	1	(0.01%)	4	(0.03%)	5	(0.04%)
40	1	(0.01%)	0	(0%)	1	(0.01%)
41	2	(0.02%)	2	(0.02%)	4	(0.03%)
42	0	(0%)	4	(0.03%)	4	(0.03%)
43	0	(0%)	1	(0.01%)	1	(0.01%)
44	0	(0%)	4	(0.03%)	4	(0.03%)
45	0	(0%)	27	(0.22%)	27	(0.22%)
46	0	(0%)	2	(0.02%)	2	(0.02%)
50	1	(0.01%)	3	(0.02%)	4	(0.03%)
52	0	(0%)	2	(0.02%)	2	(0.02%)
55	8	(0.06%)	0	(0%)	8	(0.06%)
56	0	(0%)	2	(0.02%)	2	(0.02%)
60	1	(0.01%)	0	(0%)	1	(0.01%)
62	0	(0%)	1	(0.01%)	1	(0.01%)
70	1	(0.01%)	0	(0%)	1	(0.01%)
160	0	(0%)	1	(0.01%)	1	(0.01%)
180	5	(0.04%)	0	(0%)	5	(0.04%)
240	1	(0.01%)	1	(0.01%)	2	(0.02%)
360	0	(0%)	7	(0.06%)	7	(0.06%)
420	0	(0%)	1	(0.01%)	1	(0.01%)
480	0	(0%)	1	(0.01%)	1	(0.01%)
720	0	(0%)	5	(0.04%)	5	(0.04%)
960	0	(0%)	2	(0.02%)	2	(0.02%)
1020	0	(0%)	1	(0.01%)	1	(0.01%)
1200	0	(0%)	1	(0.01%)	1	(0.01%)