8V5V

Structure of a SARS-CoV-2 spike S2 subunit in a pre-fusion, open conformation

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C (G, E, F)	Spike protein S2,Fibritin	polymer	588	64292.5	3	UniProt (P0DTC2) UniProt (P10104) Pfam (PF01601)	Severe acute respiratory syndrome coronavirus 2	Collar protein,Whisker antigen control protein
2	D, E, H (d, g, e)	Variable domain of the light chain from the human antibody 6C10	polymer	108	11697.0	3		Homo sapiens (human)
3	F, G, I (f, c, b)	Variable domain of the heavy chain from the human antibody 6C10	polymer	125	13913.5	3		Homo sapiens (human)
4	J, K, L (A, B, C)	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	3	In PDB GlyTouCan (G42666HT)
5	AA, M, N, O, P... (F, G, E)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	15	Chemie (NAG)

Sequence modifications

G, E, F: 691 - 1211 (UniProt: P0DTC2)

PDB	External Database	Details
Cys 707	Tyr 707	engineered mutation
Cys 788	Ile 788	conflict
Pro 817	Phe 817	engineered mutation
Cys 876	Ala 876	engineered mutation
Cys 883	Thr 883	engineered mutation
Pro 892	Ala 892	engineered mutation
Pro 899	Ala 899	engineered mutation
Pro 942	Ala 942	engineered mutation
Pro 987	Val 987	engineered mutation
Gly 1212	-	linker
Ser 1213	-	linker

G, E, F: 1214 - 1240 (UniProt: P10104)

PDB	External Database	Details
Leu 1235	Phe 479	conflict
Leu 1241	-	expression tag
Glu 1242	-	expression tag
Val 1243	-	expression tag
Leu 1244	-	expression tag
Phe 1245	-	expression tag
Gln 1246	-	expression tag
Gly 1247	-	expression tag
Pro 1248	-	expression tag
Ala 1249	-	expression tag
Gly 1250	-	expression tag
Trp 1251	-	expression tag
Ser 1252	-	expression tag
His 1253	-	expression tag
Pro 1254	-	expression tag
Gln 1255	-	expression tag
Phe 1256	-	expression tag
Glu 1257	-	expression tag
Lys 1258	-	expression tag
Gly 1259	-	expression tag
Gly 1260	-	expression tag
Gly 1261	-	expression tag
Ser 1262	-	expression tag
Gly 1263	-	expression tag
Gly 1264	-	expression tag
Gly 1265	-	expression tag
Ser 1266	-	expression tag
Gly 1267	-	expression tag
Gly 1268	-	expression tag
Gly 1269	-	expression tag
Ser 1270	-	expression tag
Trp 1271	-	expression tag
Ser 1272	-	expression tag
His 1273	-	expression tag
Pro 1274	-	expression tag
Gln 1275	-	expression tag
Phe 1276	-	expression tag
Glu 1277	-	expression tag
Lys 1278	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	9
	Total formula weight	269708.8
Branched	Number of molecules	3
	Total formula weight	1273.2
Non-Polymers*	Number of molecules	15
	Total formula weight	3318.1
All*	Total formula weight	274300.2

*Water molecules are not included.