Structure of PDB 4eqb Chain A Binding Site BS02

Receptor Information
>4eqb Chain A (length=323) Species: 525381 (Streptococcus pneumoniae TCH8431/19A) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SQKLVIYNWGDYIDPELLTQFTEETGIQVQYETFDSNEAMYTKIKQGGTT
YDIAIPSEYMINKMKDEDLLVPLDYSKIEGIENIGPEFLNQSFDPGNKFS
IPYFWGTLGIVYNETMVDEAPEHWDDLWKLEYKNSIMLFDGAREVLGLGL
NSLGYSLNSKDPQQLEETVDKLYKLTPNIKAIVADEMKGYMIQNNVAIGV
TFSGEASQMLEKNENLRYVVPTEASNLWFDNMVIPKTVKNQDSAYAFINF
MLKPENALQNAEYVGYSTPNLPAKELLPEETKEDKAFYPDVETMKHLEVY
EKFDHKWTGKYSDLFLQFKMYRK
Ligand information
Ligand IDCA
InChIInChI=1S/Ca/q+2
InChIKeyBHPQYMZQTOCNFJ-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341[Ca++]
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Ca+2]
FormulaCa
NameCALCIUM ION
ChEMBL
DrugBankDB14577
ZINC
PDB chain4eqb Chain A Residue 402 [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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PDB4eqb 1.5 Angstrom Crystal Structure of Spermidine/Putrescine ABC Transporter Substrate-Binding Protein from Streptococcus pneumoniae strain Canada MDR_19A in Complex with Calcium and HEPES.
Resolution1.5 Å
Binding residue
(original residue number in PDB)		Y354 K356
Binding residue
(residue number reindexed from 1)		Y321 K323
Annotation score4
Gene Ontology
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UnboundLocalError		Python 3.6.8: /usr/bin/python3
Mon Mar 3 17:44:40 2025

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 = '4eqb', asym_id = 'A', bs = 'BS02', title = '1.5 Angstrom Crystal Structure of Spermidine/Put...anada MDR_19A in Complex with Calcium and HEPES. '
 /var/www/html/BioLiP/pdb.cgi in display_interaction(pdbid='4eqb', asym_id='A', bs='BS02', title='1.5 Angstrom Crystal Structure of Spermidine/Put...anada MDR_19A in Complex with Calcium and HEPES. ')
   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 = '0015846,0019808,0042597', uniprot = '', pdbid = '4eqb', asym_id = 'A'
 /var/www/html/BioLiP/pdb.cgi in display_go(go='0015846,0019808,0042597', uniprot='', pdbid='4eqb', asym_id='A')
    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>