5TCX

Crystal structure of human tetraspanin CD81

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	CD81 antigen	polymer	246	27203.6	1	UniProt (P60033) Pfam (PF00335)	Homo sapiens (Human)	26 kDa cell surface protein TAPA-1,Target of the antiproliferative antibody 1,Tetraspanin-28,Tspan-28
2	B (A)	CHOLESTEROL	non-polymer		386.7	1	Chemie (CLR) PubChem (16219173) PubChem (16758052) PubChem (176980071) PubChem (18640088) PubChem (1715243) PubChem (1715244) PubChem (23423981) PubChem (44654663) PubChem (46937002) PubChem (40477506) PubChem (40557614) PubChem (42579431) PubChem (42579432) PubChem (59274407) PubChem (45044259) PubChem (68311425) PubChem (68311398) PubChem (143173313) PubChem (177156123) PubChem (5997) PubChem (1551269) PubChem (90070115) PubChem (49853509) PubChem (50990013) PubChem (117965027) PubChem (6432564) PubChem (6710666) PubChem (124146240) PubChem (52934537) PubChem (7059399) PubChem (124897607) PubChem (124896959) PubChem (10861996) PubChem (56621683) PubChem (132837164) PubChem (11834483) PubChem (11888915) PubChem (11888914) PubChem (138967089) PubChem (139566851) PubChem (15939944) PubChem (57915018) PubChem (57939063) PubChem (58428240) PubChem (58445498) PubChem (58663286) PubChem (171828367) PubChem (173516975) PubChem (59450329) PubChem (59628412) PubChem (59965215) PubChem (71234641) PubChem (59993755) PubChem (60001463) PubChem (66634651) PubChem (68055877) PubChem (68166463) PubChem (68315613) PubChem (70795838) PubChem (70797612) PubChem (70954610) PubChem (70957185) PubChem (71463909) PubChem (89951918) PubChem (90224410) PubChem (91298236) PubChem (101624109) PubChem (304) PubChem (124225449) PubChem (191463) PubChem (368063) PubChem (369319) PubChem (124429284) PubChem (638019) PubChem (124909223) PubChem (124909224) PubChem (124909225) PubChem (1549081) PubChem (1553803) PubChem (5283629) PubChem (5284644) PubChem (5315842) PubChem (6419195) PubChem (6994560) PubChem (7055705) PubChem (7055706) PubChem (7059398) PubChem (7059400) PubChem (7059635) PubChem (7103033) PubChem (7182477) PubChem (7182478) PubChem (9909206) PubChem (10045721) PubChem (71168115) PubChem (10134774) PubChem (10293553) PubChem (71173031) PubChem (11003580) PubChem (11025495) PubChem (11058155) PubChem (11463329) PubChem (11868624) PubChem (11868625) PubChem (11869366) PubChem (11869367) PubChem (11869368) PubChem (11869369) PubChem (130459183) PubChem (12120344) PubChem (12156156) PubChem (12303135) PubChem (12303148) PubChem (12303156) PubChem (12303159) PubChem (12303160) PubChem (131992107) PubChem (139568882) PubChem (142983773) PubChem (144054483) PubChem (144209461) PubChem (144331236) PubChem (144808354) PubChem (145053568) PubChem (145157652) PubChem (145215073) PubChem (145230478) PubChem (146320991) PubChem (147857230) PubChem (154993519) PubChem (158603858) PubChem (162906452) PubChem (162906453) PubChem (162906454) PubChem (162906455) PubChem (162906456) PubChem (162906457) PubChem (163255768) PubChem (163389210) PubChem (164665303) PubChem (166553771) PubChem (166712004) PubChem (170116175) PubChem (171764280) PubChem (171817101) PubChem (171817104) PubChem (174285573)
3	C (A)	water	water		18.0	3	Chemie (HOH)

Sequence modifications

A: 2 - 236 (UniProt: P60033)

PDB	External Database	Details
Arg 1	-	expression tag
Ser 6	Cys 6	engineered mutation
Ser 9	Cys 9	engineered mutation
Ser 227	Cys 227	engineered mutation
Ser 228	Cys 228	engineered mutation
Val 237	-	expression tag
Pro 238	-	expression tag
His 239	-	expression tag
His 240	-	expression tag
His 241	-	expression tag
His 242	-	expression tag
His 243	-	expression tag
His 244	-	expression tag
His 245	-	expression tag
His 246	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	27203.6
Non-Polymers*	Number of molecules	1
	Total formula weight	386.7
All*	Total formula weight	27590.2

*Water molecules are not included.