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ribB ribB ribH ribH arfC arfC ribK ribK mptB mptB MJ_0054 MJ_0054 MJ_0057 MJ_0057 trpF trpF thiL thiL glyA glyA ribC ribC
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query proteins and first shell of interactors
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second shell of interactors
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proteins of unknown 3D structure
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a 3D structure is known or predicted
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Predicted Interactions
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textmining
co-expression
protein homology
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ribBGTP cyclohydrolase II (ribA); Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate. (227 aa)    
Predicted Functional Partners:
ribH
Riboflavin synthase beta chain (ribH); Catalyzes the formation of 6,7-dimethyl-8-ribityllumazine by condensation of 5-amino-6-(D-ribitylamino)uracil with 3,4-dihydroxy-2- butanone 4-phosphate. This is the penultimate step in the biosynthesis of riboflavin; Belongs to the DMRL synthase family.
 
 
 0.999
arfC
Riboflavin-specific deaminase (ribG); Catalyzes an early step in riboflavin biosynthesis, the NAD(P)H-dependent reduction of the ribose side chain of 2,5-diamino-6- ribosylamino-4(3H)-pyrimidinone 5'-phosphate, yielding 2,5-diamino-6- ribitylamino-4(3H)-pyrimidinone 5'-phosphate. The beta anomer is the authentic substrate, and the alpha anomer can serve as substrate subsequent to spontaneous anomerization. NADPH and NADH function equally well as the reductants. Does not catalyze the reduction of 5- amino-6-(5-phospho-D-ribosylamino)uracil to 5-amino-6-(5-phospho-D- ribitylamino)uracil; [...]
 
 
 0.961
ribK
Conserved hypothetical protein; Catalyzes the CTP-dependent phosphorylation of riboflavin (vitamin B2) to form flavin mononucleotide (FMN). Can also utilize UTP as the phosphate donor, although less efficiently, and it is unclear if ATP and GTP can also serve as substrates or not.
       0.955
mptB
Cmp-binding-factor 1 isolog; Cyclic phosphodiesterase that hydrolyzes the cyclic phosphate of 7,8-dihydroneopterin 2',3'-cyclic phosphate (H2N-cP) and converts it to a mixture of 7,8-dihydroneopterin 2'-phosphate (H2N-2'P) and 7,8- dihydroneopterin 3'-phosphate (H2N-3'P). Is also able to utilize other phosphodiesters as substrates in vitro: hydrolysis of bis-pNPP and pNPPC produces nitrophenyl phosphate, and that of 2',3'-cAMP produces 3'-AMP. ATP, 3',5'-cAMP, GTP, 3',5'-cGMP, and 4',5'-cFMN cannot serve as substrates.
     
 0.839
MJ_0054
Conserved hypothetical protein; Similar to GB:AE000666 percent identity: 46.33; identified by sequence similarity; putative.
       0.802
MJ_0057
Na+/H+ antiporter; This is a Na(+)/H(+) antiporter. Can also transport lithium. Belongs to the monovalent cation:proton antiporter 1 (CPA1) transporter (TC 2.A.36) family.
     
 0.771
trpF
Phosphoribosylanthranilate isomerase (trpF); Similar to GB:M83788 PID:149038 SP:P52563 percent identity: 41.23; identified by sequence similarity; putative; Belongs to the TrpF family.
     
 0.748
thiL
Thiamine monphosphate kinase (thiL); Catalyzes the ATP-dependent phosphorylation of thiamine- monophosphate (TMP) to form thiamine-pyrophosphate (TPP), the active form of vitamin B1; Belongs to the thiamine-monophosphate kinase family.
 
   
 0.734
glyA
Serine hydroxymethyltransferase (glyA); Catalyzes the reversible interconversion of serine and glycine with tetrahydromethanopterin (H4MPT) serving as the one-carbon carrier. The use of tetrahydrofolate (THF or H4PteGlu) as the pteridine substrate is 450-fold less efficient than that of H4MPT. Also exhibits a pteridine-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism. Thus, is able to catalyze the cleavage of L-allo-threonine and L-threo- beta-phenylserine; Belongs to the SHMT family.
  
  
 0.697
ribC
Riboflavin synthase (ribC); Similar to GP:1419079 percent identity: 68.00; identified by sequence similarity; putative; Belongs to the DMRL synthase family.
 
   
 0.686
Your Current Organism:
Methanocaldococcus jannaschii
NCBI taxonomy Id: 243232
Other names: M. jannaschii DSM 2661, Methanocaldococcus jannaschii DSM 2661, Methanocaldococcus jannaschii str. DSM 2661, Methanococcus jannaschii DSM 2661
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