Structure of PDB 3top Chain B Binding Site BS02

Receptor Information
>3top Chain B (length=890) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
DEEKIDCYPDENGASAENCTARGCIWEASNSSGVPFCYFVNDLYSVSDVQ
YNSHGATADISLKSSVYANAFPSTPVNPLRLDVTYHKNEMLQFKIYDPNK
NRYEVPVPLNIPSMPSSTPEGQLYDVLIKKNPFGIEIRRKSTGTIIWDSQ
LLGFTFSDMFIRISTRLPSKYLYGFGETEHRSYRRDLEWHTWGMFSRDQP
PGYKKNSYGVHPYYMGLEEDGSAHGVLLLNSNAMDVTFQPLPALTYRTTG
GVLDFYVFLGPTPELVTQQYTELIGRPVMVPYWSLGFQLCRYGYQNDSEI
ASLYDEMVAAQIPYDVQYSDIDYMERQLDFTLSPKFAGFPALINRMKADG
MRVILILDPAISGNETQPYPAFTRGVEDDVFIKYPNDGDIVWGKVWPDFP
DVVVNGSLDWDSQVELYRAYVAFPDFFRNSTAKWWKREIEELYNNPQNPE
RSLKFDGMWIDMNEPSSFVNGAVSPGCRDASLNHPPYMPHLESRDRGLSS
KTLCMESQQILPDGSLVQHYNVHNLYGWSQTRPTYEAVQEVTGQRGVVIT
RSTFPSSGRWAGHWLGDNTAAWDQLKKSIIGMMEFSLFGISYTGADICGF
FQDAEYEMCVRWMQLGAFYPFSRNHNTIGTRRQDPVSWDVAFVNISRTVL
QTRYTLLPYLYTLMHKAHTEGVTVVRPLLHEFVSDQVTWDIDSQFLLGPA
FLVSPVLERNARNVTAYFPRARWYDYYTGVDINARGEWKTLPAPLDHINL
HVRGGYILPWQEPALNTHLSRQKFMGFKIALDDEGTAGGWLFWDDGQSID
TYGKGLYYLASFSASQNTMQSHIIFNNYITGTNPLKLGYIEIWGVGSVPV
TSVSISVSGMVITPSFNNDPTTQVLSIDVTDRNISLHNFT
Ligand information
Ligand IDAC1
InChIInChI=1S/C13H23NO8/c1-4-7(10(18)12(20)13(21)22-4)14-6-2-5(3-15)8(16)11(19)9(6)17/h2,4,6-21H,3H2,1H3/t4-,6+,7-,8-,9+,10+,11+,12-,13+/m1/s1
InChIKeyRBZIIHWPZWOIDU-ZCGMLSCUSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0CC1C(C(C(C(O1)O)O)O)NC2C=C(C(C(C2O)O)O)CO
CACTVS 3.341C[CH]1O[CH](O)[CH](O)[CH](O)[CH]1N[CH]2C=C(CO)[CH](O)[CH](O)[CH]2O
OpenEye OEToolkits 1.5.0C[C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O)O)O)N[C@H]2C=C([C@H]([C@@H]([C@H]2O)O)O)CO
ACDLabs 10.04OC2C(NC1C=C(CO)C(O)C(O)C1O)C(OC(O)C2O)C
CACTVS 3.341C[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@@H]1N[C@H]2C=C(CO)[C@@H](O)[C@H](O)[C@H]2O
FormulaC13 H23 N O8
Name4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucopyranose;
6-METHYL-5-(4,5,6-TRIHYDROXY-3-HYDROXYMETHYL-CYCLOHEX-2-ENYLAMINO)-TETRAHYDRO-PYRAN-2,3,4-TRIOL;
4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucose;
4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-D-glucose;
4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-glucose
ChEMBL
DrugBankDB02218
ZINCZINC000058638973
PDB chain3top Chain D Residue 3 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB3top Structural insight into substrate specificity of human intestinal maltase-glucoamylase
Resolution2.881 Å
Binding residue
(original residue number in PDB)
D1157 D1279 W1355 W1418 M1421 R1510 D1526 F1559 H1584
Binding residue
(residue number reindexed from 1)
D198 D320 W396 W459 M462 R551 D567 F600 H625
Annotation score1
Enzymatic activity
Enzyme Commision number 3.2.1.20: alpha-glucosidase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds
GO:0030246 carbohydrate binding
Biological Process
GO:0005975 carbohydrate metabolic process

View graph for
Molecular Function

View graph for
Biological Process
External links
PDB RCSB:3top, PDBe:3top, PDBj:3top
PDBsum3top
PubMed22058037
UniProtO43451|MGA_HUMAN Maltase-glucoamylase (Gene Name=MGAM)

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