Structure of PDB 4eqb Chain A

Receptor sequence
>4eqbA (length=323) Species: 525381 (Streptococcus pneumoniae TCH8431/19A) [Search protein sequence]
SQKLVIYNWGDYIDPELLTQFTEETGIQVQYETFDSNEAMYTKIKQGGTT
YDIAIPSEYMINKMKDEDLLVPLDYSKIEGIENIGPEFLNQSFDPGNKFS
IPYFWGTLGIVYNETMVDEAPEHWDDLWKLEYKNSIMLFDGAREVLGLGL
NSLGYSLNSKDPQQLEETVDKLYKLTPNIKAIVADEMKGYMIQNNVAIGV
TFSGEASQMLEKNENLRYVVPTEASNLWFDNMVIPKTVKNQDSAYAFINF
MLKPENALQNAEYVGYSTPNLPAKELLPEETKEDKAFYPDVETMKHLEVY
EKFDHKWTGKYSDLFLQFKMYRK
3D structure
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.
ChainA
Resolution1.5 Å
3D
structure
[Spin on]
[Spin off]
[Reset orientation]

[High quality]
[Low quality]

[White background]
[Black background]

[Download]
[Download structure with residue number starting from 1]
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 CA A Q53 N289 Q20 N256
BS02 CA A Y354 K356 Y321 K323
Gene Ontology
--> -->
 
 
UnboundLocalError		Python 3.6.8: /usr/bin/python3
Tue Mar 4 01:56:35 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>()
   1443                 pubmed=display_regular_ligand(pdbid,asym_id,lig3,ligIdx,title)
   1444         else:
=> 1445             pubmed,uniprot=display_protein_receptor(pdbid,asym_id,title)
   1446     
   1447     uniprot_line=''
pubmed = '', uniprot = '', display_protein_receptor = <function display_protein_receptor>, pdbid = '4eqb', asym_id = 'A', 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_protein_receptor(pdbid='4eqb', asym_id='A', title='1.5 Angstrom Crystal Structure of Spermidine/Put...anada MDR_19A in Complex with Calcium and HEPES. ')
    839 
    840     if go:
=>  841         display_go(go,uniprot,pdbid,asym_id)
    842     return pubmed,uniprot
    843 
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>