PMID- 10353815
OWN - NLM
STAT- MEDLINE
DCOM- 19990623
LR  - 20131121
IS  - 0006-2960 (Print)
IS  - 0006-2960 (Linking)
VI  - 38
IP  - 22
DP  - 1999 Jun 1
TI  - Crystal structure of NAD(P)H:flavin oxidoreductase from Escherichia coli.
PG  - 7040-9
AB  - Flavin reductases use flavins as substrates and are distinct from flavoenzymes
      which have tightly bound flavins. The reduced flavin can serve to reduce ferric
      complexes and iron proteins. In Escherichia coli, reactivation of ribonucleotide 
      reductase is achieved by reduced flavins produced by flavin reductase. The
      crystal structure of E. coli flavin reductase reveals that the enzyme structure
      is similar to the structures of the ferredoxin reductase family of flavoproteins 
      despite very low sequence similarities. The main difference between flavin
      reductase and structurally related flavoproteins is that there is no binding site
      for the AMP moiety of FAD. The direction of the helix in the flavin binding
      domain, corresponding to the phosphate binding helix in the flavoproteins, is
      also slightly different and less suitable for phosphate binding. Interactions for
      flavin substrates are instead provided by a hydrophobic isoalloxazine binding
      site that also contains a serine and a threonine, which form hydrogen bonds to
      the isoalloxazine of bound riboflavin in a substrate complex.
FAU - Ingelman, M
AU  - Ingelman M
AD  - Department of Molecular Biology, Swedish University of Agricultural Sciences,
      Biomedical Center, Uppsala.
FAU - Ramaswamy, S
AU  - Ramaswamy S
FAU - Niviere, V
AU  - Niviere V
FAU - Fontecave, M
AU  - Fontecave M
FAU - Eklund, H
AU  - Eklund H
LA  - eng
SI  - PDB/1QFJ
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Biochemistry
JT  - Biochemistry
JID - 0370623
RN  - 0 (Phosphates)
RN  - 146-14-5 (Flavin-Adenine Dinucleotide)
RN  - 415SHH325A (Adenosine Monophosphate)
RN  - 53-59-8 (NADP)
RN  - 7N464URE7E (Flavin Mononucleotide)
RN  - EC 1.18.1.2 (Ferredoxin-NADP Reductase)
RN  - EC 1.5.1.38 (FMN Reductase)
RN  - EC 1.6.- (NADH, NADPH Oxidoreductases)
RN  - TLM2976OFR (Riboflavin)
SB  - IM
MH  - Adenosine Monophosphate/chemistry/metabolism
MH  - Amino Acid Sequence
MH  - Binding Sites
MH  - Crystallization
MH  - Crystallography, X-Ray
MH  - Escherichia coli/*enzymology
MH  - Evolution, Molecular
MH  - FMN Reductase
MH  - Ferredoxin-NADP Reductase/chemistry/metabolism
MH  - Flavin Mononucleotide/chemistry/metabolism
MH  - Flavin-Adenine Dinucleotide/chemistry/metabolism
MH  - Hydrogen Bonding
MH  - Models, Molecular
MH  - Molecular Sequence Data
MH  - NADH, NADPH Oxidoreductases/*chemistry/metabolism
MH  - NADP/chemistry/metabolism
MH  - Phosphates/chemistry/metabolism
MH  - Riboflavin/chemistry/metabolism
MH  - Sequence Alignment
MH  - Sequence Homology, Amino Acid
EDAT- 1999/06/03 00:00
MHDA- 1999/06/03 00:01
CRDT- 1999/06/03 00:00
PHST- 1999/06/03 00:00 [pubmed]
PHST- 1999/06/03 00:01 [medline]
PHST- 1999/06/03 00:00 [entrez]
AID - 10.1021/bi982849m [doi]
AID - bi982849m [pii]
PST - ppublish
SO  - Biochemistry. 1999 Jun 1;38(22):7040-9. doi: 10.1021/bi982849m.