1OH2

Sucrose-Specific Porin, with Bound Sucrose Molecules

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	P, R	Sucrose porin	polymer	413	45333.7	2	UniProt (P22340) Pfam (PF02264) In PDB	Salmonella typhimurium
2	Q	Sucrose porin	polymer	413	44923.4	1	UniProt (P22340) Pfam (PF02264) In PDB	Salmonella typhimurium
3	A, B, C, D, E...	beta-D-fructofuranose-(2-1)-alpha-D-glucopyranose	branched		342.3	6	In PDB BIRD (PRD_900003)		sucrose
4	P, Q, R	CALCIUM ION	non-polymer		40.1	3	Chemie (CA)

Sequence modifications

Q: 71 - 483 (UniProt: P22340)

PDB	External Database	Details
Pro 80	Arg 102	conflict
Pro 110	Arg 132	engineered mutation
Ala 114	Gln 136	engineered mutation
Ile 120	Glu 142	engineered mutation
Leu 161	Arg 183	engineered mutation
Ala 194	Asp 216	engineered mutation
Leu 199	Asp 221	engineered mutation
Cys 201	Asp 223	conflict
Ala 482	Trp 504	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	135590.8
Branched	Number of molecules	6
	Total formula weight	2053.8
Non-Polymers*	Number of molecules	3
	Total formula weight	120.2
All*	Total formula weight	137764.8

*Water molecules are not included.