P77398 (ARNA_ECOLI) Escherichia coli (strain K12)

Bifunctional polymyxin resistance protein ArnA UniProtKBInterProSTRINGSTRINGInteractive Modelling

660 aa; Sequence (Fasta) 23 identical sequences

Sequence Features

 104Proton donor; for formyltransferase activity
 434Proton acceptor; for decarboxylase activity
 619Proton donor; for decarboxylase activity
 102Transition state stabilizer
 140Raises pKa of active site His
 368-369NAD binding
 53-175Formyl transferase, N-terminal
 202-295Formyl transferase, C-terminal
 318-566NAD-dependent epimerase/dehydratase

Sequence Alignments

Experimental structures

Hexameric ArnA cryo-EM structure Heteromer
Tetrameric cryo-EM ArnA Heteromer
The crystal structure of apo ArnA features an unexpected central binding pocket and provides an exp…homo-6-mer DTT;ACT;4wkg1-656
Crystal structure of full length ArnAhomo-6-mer ATP;UGA;1z7e1-656
Crystal Structure of E. coli ArnA (PmrI) Decarboxylase Domainhomo-6-mer SO4;1u9j315-656
Crystal Structure of ArnA dehydrogenase (decarboxylase) domain, R619M mutanthomo-6-mer 12×SO4;GOL;1z75315-656
Crystal Structure of E. coli ArnA dehydrogenase (decarboxylase) domain, S433A mutanthomo-6-mer 12×SO4;GOL;1z73315-656
Apo-structure of the C-terminal decarboxylase domain of ArnAhomo-2-mer 2bll317-657
Crystal structure of E.coli ArnA dehydrogenase (decarboxylase) domain, R619E mutantmonomer SO4;1z7b315-656
Crystal Structure of E.coli ArnA dehydrogenase (decarboxylase) domain, R619Y mutantmonomer SO4;1z74315-656
N-terminal formyltransferase domain of ArnA in complex with N-5- formyltetrahydrofolate and UMPmonomer FON;U5P;ACT;2bln1-304
Crystal Structure of E.coli ArnA Transformylase Domainmonomer 1yrw1-300