Structure of PDB 1bap Chain A Binding Site BS02

Receptor Information
>1bap Chain A (length=305) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
NLKLGFLVKQPEEPWFQTEWKFADKAGKDLGFEVIKIAVPDGEKTLNAID
SLAASGAKGFVICTPDPKLGSAIVAKARGYDMKVIAVDDQFVNAKGKPMD
TVPLVMMAATKIGERQGQELYKEMQKRGWDVKESAVMAITANELDTARRR
TTGSMDALKAAGFPEKQIYQVPTKSNDIPGAFDAANSMLVQHPEVKHWLI
VGMNDSTVLGGVRATEGQGFKAADIIGIGINGVDAVSELSKAQATGFYGS
LLGSPDVHGYKSSEMLYNWVAKDVEPPKFTEVTDVVLITRDNFKEELEKK
GLGGK
Ligand information
Ligand IDARB
InChIInChI=1S/C5H10O5/c6-2-1-10-5(9)4(8)3(2)7/h2-9H,1H2/t2-,3-,4+,5-/m0/s1
InChIKeySRBFZHDQGSBBOR-KLVWXMOXSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0C1C(C(C(C(O1)O)O)O)O
OpenEye OEToolkits 1.5.0C1[C@@H]([C@@H]([C@H]([C@H](O1)O)O)O)O
CACTVS 3.341O[CH]1CO[CH](O)[CH](O)[CH]1O
CACTVS 3.341O[C@H]1CO[C@H](O)[C@H](O)[C@H]1O
ACDLabs 10.04OC1C(O)COC(O)C1O
FormulaC5 H10 O5
Namebeta-L-arabinopyranose;
beta-L-arabinose;
L-arabinose;
arabinose
ChEMBL
DrugBankDB03246
ZINCZINC000003860202
PDB chain1bap Chain A Residue 308 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1bap A Pro to Gly mutation in the hinge of the arabinose-binding protein enhances binding and alters specificity. Sugar-binding and crystallographic studies.
Resolution1.75 Å
Binding residue
(original residue number in PDB)		K10 E14 D90 R151 M204 N232
Binding residue
(residue number reindexed from 1)		K9 E13 D89 R150 M203 N231
Annotation score4
Binding affinityMOAD: Kd=0.14uM
PDBbind-CN: -logKd/Ki=6.85,Kd=0.14uM
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0015407 ABC-type monosaccharide transporter activity
GO:0030246 carbohydrate binding
GO:0048029 monosaccharide binding
Biological Process
GO:0042882 L-arabinose transmembrane transport
Cellular Component
GO:0016020 membrane
GO:0030288 outer membrane-bounded periplasmic space
GO:0042597 periplasmic space
GO:0055052 ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1bap, PDBe:1bap, PDBj:1bap
PDBsum1bap
PubMed2204627
UniProtP02924|ARAF_ECOLI L-arabinose-binding periplasmic protein (Gene Name=araF)

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