5ELB

Cholera toxin classical B-pentamer in complex with Lewis-y

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)	Vibrio cholerae O1	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, L, M, N, O... (K, L, M, N, O...)	alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)]2-acetamido-2-deoxy-alpha-D-glucopyranose	branched		675.6	8	In PDB BIRD (PRD_900124) GlyTouCan (G82236PZ)		Lewis Y antigen, alpha anomer
3	S, T (S, T)	alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-3)-alpha-L-fucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		878.8	2
4	AA, EA, GA, JA, NA... (B, C, D, E, A)	CALCIUM ION	non-polymer		40.1	10	Chemie (CA)
5	CA, CB, DB, FB, HA... (B, G, H, I, C...)	beta-D-galactopyranose	non-polymer		180.2	10	Chemie (GAL)
6	BB, DA, EB, GB, IA... (G, B, H, I, C...)	alpha-D-galactopyranose	non-polymer		180.2	10	Chemie (GLA)
7	BA, FA, KA, LA, MA... (B, C, D, E, A)	BICINE	non-polymer		163.2	10	Chemie (BCN)
8	AB (G)	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	1	Chemie (PEG)
9	JB, KB, LB, MB, NB... (A, B, C, D, E...)	water	water		18.0	1550	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	7162.7
Non-Polymers*	Number of molecules	41
	Total formula weight	5741.7
All*	Total formula weight	129137.1

*Water molecules are not included.