6HMY

Cholera toxin classical B-pentamer in complex with fucosyl-GM1

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, D, E... (A, B, C, D, E...)	Cholera enterotoxin B-subunit	polymer	103	11623.3	10	UniProt (Q57193) Pfam (PF01376) UniProt (by SIFTS) (P01556)	Vibrio cholerae	Cholera enterotoxin subunit B,Cholera toxin B protein (CTB),Cholera toxin B subunit,Cholera toxin beta subunit,Cholera toxin subunit B,Cholerae toxin B subunit,CtxB
2	K, N, O, P, S... (K, N, O, P, S...)	alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose	branched		1145.0	6	In PDB GlyTouCan (G91532KA)
3	L, R (L, R)	alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose	branched		1145.0	2	In PDB GlyTouCan (G91532KA)
4	M, Q (M, Q)	alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose	branched		1145.0	2	In PDB GlyTouCan (G18193SZ)
5	AA, DA, FA, HA, IA... (B, C, D, E, A)	CALCIUM ION	non-polymer		40.1	10	Chemie (CA)
6	BA, CA, EA, GA, JA... (B, C, D, E, A)	BICINE	non-polymer		163.2	10	Chemie (BCN)
7	OA, PA (F, J)	alpha-L-fucopyranose	non-polymer		164.2	2	Chemie (FUC)
8	QA, RA, SA, TA, UA... (A, B, C, D, E...)	water	water		18.0	797	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	116232.7
Branched	Number of molecules	10
	Total formula weight	11450.3
Non-Polymers*	Number of molecules	22
	Total formula weight	2360.8
All*	Total formula weight	130043.7

*Water molecules are not included.