7W6U

Structure of SARS-CoV-2 spike receptor-binding domain complexed with its receptor equine ACE2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Angiotensin-converting enzyme	polymer	602	69777.4	1	UniProt (F6V9L3) Pfam (PF01401)	Equus caballus (horse)
2	B (B)	Spike protein S1	polymer	229	25951.2	1	UniProt (P0DTC2) Pfam (PF09408)	Severe acute respiratory syndrome coronavirus 2
3	C (A)	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
4	D (B)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	1	Chemie (NAG)
5	E, F (A, B)	water	water		18.0	71	Chemie (HOH)

Sequence modifications

A: 19 - 614 (UniProt: F6V9L3)

PDB	External Database	Details
His 615	-	expression tag
His 616	-	expression tag
His 617	-	expression tag
His 618	-	expression tag
His 619	-	expression tag
His 620	-	expression tag

B: 319 - 541 (UniProt: P0DTC2)

PDB	External Database	Details
His 542	-	expression tag
His 543	-	expression tag
His 544	-	expression tag
His 545	-	expression tag
His 546	-	expression tag
His 547	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	95728.6
Non-Polymers*	Number of molecules	2
	Total formula weight	286.6
All*	Total formula weight	96015.3

*Water molecules are not included.