7KN5

Crystal structure of SARS-CoV-2 receptor binding domain complexed with nanobodies VHH E and U

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Spike protein S1	polymer	231	26095.3	2	UniProt (P0DTC2) Pfam (PF09408) In PDB	Severe acute respiratory syndrome coronavirus 2 (2019-nCoV)
2	C, D	VHH E	polymer	129	14109.5	2		Vicugna pacos
3	E, F	VHH U	polymer	126	13700.0	2		Vicugna pacos
4	G	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	1	In PDB GlyTouCan (G42666HT)
5	A, C, E	1,2-ETHANEDIOL	non-polymer		62.1	5	Chemie (EDO)
6	B	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	1	Chemie (NAG)
7		water	water		18.0	415	Chemie (HOH)

Sequence modifications

A, B: 319 - 541 (UniProt: P0DTC2)

PDB	External Database	Details
Ser 542	-	expression tag
Gly 543	-	expression tag
His 544	-	expression tag
His 545	-	expression tag
His 546	-	expression tag
His 547	-	expression tag
His 548	-	expression tag
His 549	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	107809.7
Branched	Number of molecules	1
	Total formula weight	424.4
Non-Polymers*	Number of molecules	6
	Total formula weight	531.5
All*	Total formula weight	108765.6

*Water molecules are not included.