Index	Protein Name	Organism	UniProt ID/ACC	#Protein-Ligand Complex(es)
1	Replicase polyprotein 1a	Middle East respiratory syndrome-related coronavirus (isolate United Kingdom/H123990006/2012) (MERS-CoV) (Betacoronavirus England 1)	K9N638/R1A_MERS1	8
2	Replicase polyprotein 1a	Bat coronavirus HKU4 (BtCoV) (BtCoV/HKU4/2004)	P0C6T4/R1A_BCHK4	1
3	Replicase polyprotein 1a	Human coronavirus HKU1 (isolate N1) (HCoV-HKU1)	P0C6U3/R1A_CVHN1	1
4	Replicase polyprotein 1a	Severe acute respiratory syndrome coronavirus (SARS-CoV)	P0C6U8/R1A_SARS	10
5	Replicase polyprotein 1a	Porcine transmissible gastroenteritis coronavirus (strain Purdue) (TGEV)	P0C6V2/R1A_CVPPU	1
6	Replicase polyprotein 1a	Avian infectious bronchitis virus (strain M41) (IBV)	P0C6V5/R1A_IBVM	1
7	Replicase polyprotein 1a	Porcine epidemic diarrhea virus (strain CV777) (PEDV)	P0C6V6/R1A_PEDV7	1