Structure of PDB 1ddg Chain B

Receptor sequence
>1ddgB (length=374) Species: 562 (Escherichia coli) [Search protein sequence]
IHTSPYSKDAPLVASLSVNQKITGRNSEKDVRHIEIDLGDSGLRYQPGDA
LGVWYQNDPALVKELVELLWLKGDEPVTVEGKTLPLNEALQWHFELTVNT
ANIVENYATLTRSETLLPLVGDKAKLQHYAATTPIVDMVRFSPAQLDAEA
LINLLRPLTPRLYSIASSQAEVENEVHVTVGVVRYDVEGRARAGGASSFL
ADRVEEEGEVRVFIEHNDNFRLPANPETPVIMIGPGTGIAPFRAFMQQRA
ADEAPGKNWLFFGNPHFTEDFLYQVEWQRYVKEGVLTRIDLAWSRDQKEK
VYVQDKLREQGAELWRWINDGAHIYVCGDANRMAKDVEQALLEVIAEFGG
MDTEAADEFLSELRVERRYQRDVY
3D structure
PDB1ddg Four crystal structures of the 60 kDa flavoprotein monomer of the sulfite reductase indicate a disordered flavodoxin-like module.
ChainB
Resolution2.01 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) Y388 S389 C552 D597 Y599
Catalytic site (residue number reindexed from 1) Y163 S164 C327 D372 Y374
Enzyme Commision number 1.8.1.2: assimilatory sulfite reductase (NADPH).
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 FAD B T322 V323 A356 R386 L387 Y388 S389 T404 Y410 G419 G420 A421 S422 Y599 T97 V98 A131 R161 L162 Y163 S164 T179 Y185 G194 G195 A196 S197 Y374
Gene Ontology
Molecular Function
GO:0016491 oxidoreductase activity

View graph for
Molecular Function
External links
PDB RCSB:1ddg, PDBe:1ddg, PDBj:1ddg
PDBsum1ddg
PubMed10860732
UniProtP38038|CYSJ_ECOLI Sulfite reductase [NADPH] flavoprotein alpha-component (Gene Name=cysJ)

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