Structure of PDB 7qca Chain SB0

Receptor sequence
>7qcaSB0 (length=204) Species: 1358809 (Spraguea lophii 42_110) [Search protein sequence]
KDSFLKKEKYNLRIENFPVREVGATLVNKQSTVAALEKKLVGRVFEANQG
DITTSDSANCYRKFSFKIDSLAGTNAHAIFNGMCLTSEKIKGMVKRGLTL
IEGVKDVVTKEGITLRILTIAQSKKEKNSTKKTAYAKTSVVKEVRKNIFR
IVDNELNGKDIEQIVKKLQMETVGKEIEKECQKIIPLQNCHVLKVKVVKR
PVKE
3D structure
PDB7qca Spraguea lophii ribosome
ChainSB0
Resolution2.79 Å
3D
structure
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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 rna SB0 R124 G125 E130 R144 K159 Y163 K165 T166 S167 K170 R173 K222 K224 R96 G97 E102 R116 K131 Y135 K137 T138 S139 K142 R145 K194 K196
Gene Ontology
--> -->
 
 
UnboundLocalError		Python 3.6.8: /usr/bin/python3
Fri Apr 25 12:37:38 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 = '7qca', asym_id = 'SB0', title = 'Spraguea lophii ribosome'
 /var/www/html/BioLiP/pdb.cgi in display_protein_receptor(pdbid='7qca', asym_id='SB0', title='Spraguea lophii ribosome')
    839 
    840     if go:
=>  841         display_go(go,uniprot,pdbid,asym_id)
    842     return pubmed,uniprot
    843 
global display_go = <function display_go>, go = '0003735,0005840,0006412', uniprot = '', pdbid = '7qca', asym_id = 'SB0'
 /var/www/html/BioLiP/pdb.cgi in display_go(go='0003735,0005840,0006412', uniprot='', pdbid='7qca', asym_id='SB0')
    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>