Structure of PDB 4q0d Chain B Binding Site BS04

Receptor Information

>4q0d Chain B (length=508) Species: 237895 (Cryptosporidium hominis)

EKNVSIVVAASVLSSGIGINGQLPWSISEDLKFFSKITNNKCDSNKKNAL
IMGRKTWDSIGRRPLKNRIIVVISSSLPQDEADPNVVVFRNLEDSIENLM
NDDSIENIFVCGGESIYRDALKDNFVDRIYLTRVALEDIEFDTYFPEIPE
TFLPVYMSQTFCTKNISYDFMIFEKQEKKLKSIDDTVDLLGEIFGIRKMG
NRHKFPKEEIYNTPSIRFGREHYEFQYLDLLSRVLENGAYRENRTGISTY
SIFGQMMRFDMRESFPLLTTKKVAIRSIFEELIWFIKGDTNGNHLIEKKV
YIWSGNGSKEYLERIGLGHREENDLGPIYGFQWRHYNGEYKTMHDDYTGV
GVDQLAKLIETLKNNPKDRRHILTAWNPSALSQMALPPCHVLSQYYVTND
NCLSCNLYQRSCDLGLGSPFNIASYAILTMMLAQVCGYEPGELAIFIGDA
HIYENHLTQLKEQLSRTPRPFPQLKFKRKVENIEDFKWEDIELIGYYPYP
TIKMDMAV

Ligand information

• Ligand ID: MTX
• InChI: InChI=1S/C20H22N8O5/c1-28(9-11-8-23-17-15(24-11)16(21)26-20(22)27-17)12-4-2-10(3-5-12)18(31)25-13(19(32)33)6-7-14(29)30/h2-5,8,13H,6-7,9H2,1H3,(H,25,31)(H,29,30)(H,32,33)(H4,21,22,23,26,27)/t13-/m0/s1
• InChIKey: FBOZXECLQNJBKD-ZDUSSCGKSA-N
• SMILES:
  CACTVS 3.341: CN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[CH](CCC(O)=O)C(O)=O
  CACTVS 3.341: CN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O
  OpenEye OEToolkits 1.5.0: CN(Cc1cnc2c(n1)c(nc(n2)N)N)c3ccc(cc3)C(=O)NC(CCC(=O)O)C(=O)O
  ACDLabs 10.04: O=C(O)C(NC(=O)c1ccc(cc1)N(C)Cc2nc3c(nc2)nc(nc3N)N)CCC(=O)O
  OpenEye OEToolkits 1.5.0: CN(Cc1cnc2c(n1)c(nc(n2)N)N)c3ccc(cc3)C(=O)N[C@@H](CCC(=O)O)C(=O)O
• Formula: C20 H22 N8 O5
• Name: METHOTREXATE
• ChEMBL: CHEMBL34259
• DrugBank: DB00563
• ZINC: ZINC000001529323
• PDB chain: 4q0d Chain B Residue 604

Receptor-Ligand Complex Structure

Structure summary

• PDB: 4q0d Structural studies provide clues for analog design of specific inhibitors of Cryptosporidium hominis thymidylate synthase-dihydrofolate reductase.
• Resolution: 3.449 Å
• Binding residue (original residue number in PDB): V9 V10 A11 D32 L33 F36 S37 I62 R70
• Binding residue (residue number reindexed from 1): V7 V8 A9 D30 L31 F34 S35 I60 R68
• Annotation score: 2

Gene Ontology

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UnboundLocalError

Python 3.6.8: /usr/bin/python3 Thu Nov 28 13:55:35 2024

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

 /var/www/html/BioLiP/pdb.cgi in <module>()

   1435     title=pdb2title(pdbid)

   1436     if bs.startswith("BS"):

=> 1437         pubmed,uniprot=display_interaction(pdbid,asym_id,bs,title)

   1438     else:

   1439         if lig3:

pubmed = '', uniprot = '', display_interaction = <function display_interaction>, pdbid = '4q0d', asym_id = 'B', bs = 'BS04', title = 'Structural studies provide clues for analog desi...is thymidylate synthase-dihydrofolate reductase. '

 /var/www/html/BioLiP/pdb.cgi in display_interaction(pdbid='4q0d', asym_id='B', bs='BS04', title='Structural studies provide clues for analog desi...is thymidylate synthase-dihydrofolate reductase. ')

   1295         display_ec(ec,csaOrig,csaRenu)

   1296     if go:

=> 1297         display_go(go,uniprot,pdbid,asym_id)

   1298     return pubmed,uniprot

   1299 

global display_go = <function display_go>, go = '0004146,0004799,0006231,0006730,0016741,0046654', uniprot = '', pdbid = '4q0d', asym_id = 'B'

 /var/www/html/BioLiP/pdb.cgi in display_go(go='0004146,0004799,0006231,0006730,0016741,0046654', uniprot='', pdbid='4q0d', asym_id='B')

    480         '''.replace("$namespace_link",namespace_link

    481           ).replace("$namespace",namespace

=>  482           ).replace("$uniprot",u

    483         ))

    484         for l,(term,name) in enumerate(go2aspect[Aspect]):

u undefined

UnboundLocalError: local variable 'u' referenced before assignment
      args = ("local variable 'u' referenced before assignment",)
      with_traceback = <built-in method with_traceback of UnboundLocalError object>