Structure of PDB 4v4h Chain BG

Receptor sequence
>4v4hBG (length=176) Species: 562 (Escherichia coli) [Search protein sequence]
SRVAKAPVVVPAGVDVKINGQVITIKGKNGELTRTLNDAVEVKHADNTLT
FGPRDGYADGWAQAGTARALLNSMVIGVTEGFTKKLQLVGVGYRAAVKGN
VINLSLGFSHPVDHQLPAGITAECPTQTEIVLKGADKQVIGQVAADLRAY
RRPEPYKGKGVRYADEVVRTKEAKKK
3D structure
PDB4v4h Structural analysis of kasugamycin inhibition of translation.
ChainBG
Resolution3.46 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 BG S1 R2 V3 R34 A62 G65 T66 V91 G107 F108 S109 K137 Q138 G141 Q142 R152 P155 Y156 K157 S1 R2 V3 R34 A62 G65 T66 V91 G107 F108 S109 K137 Q138 G141 Q142 R152 P155 Y156 K157
Gene Ontology
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UnboundLocalError		Python 3.6.8: /usr/bin/python3
Sun Mar 9 13:03:33 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 = '4v4h', asym_id = 'BG', title = 'Structural analysis of kasugamycin inhibition of translation.'
 /var/www/html/BioLiP/pdb.cgi in display_protein_receptor(pdbid='4v4h', asym_id='BG', title='Structural analysis of kasugamycin inhibition of translation.')
    839 
    840     if go:
=>  841         display_go(go,uniprot,pdbid,asym_id)
    842     return pubmed,uniprot
    843 
global display_go = <function display_go>, go = '0003735,0005840,0006412,0019843', uniprot = '', pdbid = '4v4h', asym_id = 'BG'
 /var/www/html/BioLiP/pdb.cgi in display_go(go='0003735,0005840,0006412,0019843', uniprot='', pdbid='4v4h', asym_id='BG')
    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>