Structure of PDB 4aop Chain A

Receptor sequence
>4aopA (length=453) Species: 37762 (Escherichia coli B) [Search protein sequence]
LRCRLPGGVITTKQWQAIDKFAGENTIYGSIRLTNRQTFQFHGILPVHQM
LHSVGLDALNDMNRNVLCTSNPYESQLHAEAYEWAKKISEHLLPLPRKFK
TTVVIPPQNDIDLHANDMNFVAIAENGKLVGFNLLVGGGLSIEHGNKKTY
ARTASEFGYLPLEHTLAVAEAVVTTQRDWGNRTDRKNAKTKYTLERVGVE
TFKAEVERRAGIKFEPIRPYEFTGRGDRIGWVKGIDDNWHLTLFIENGRI
LDYPARPLKTGLLEIAKIHKGDFRITANQNLIIAGVPESEKAKIEKIAKE
SGLMNAVTPQRENSMACVSFPTCPLAMAEAERFLPSFIDNIDNLMAKHGV
SDEHIVMRVTGCPNGCGRAMLAEVGLVGKAPGRYNLHLGGNRIGTRIPRM
YKENITEPEILASLDELIGRWAKEREAGEGFGDFTVRAGIIRPVLDPARD
LWD
3D structure
PDB4aop Structures of the siroheme- and Fe4S4-containing active center of sulfite reductase in different states of oxidation: heme activation via reduction-gated exogenous ligand exchange.
ChainA
Resolution1.8 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R83 R153 K215 K217 A394 C434 C440 C479 C483
Catalytic site (residue number reindexed from 1) R2 R64 K98 K100 A277 C317 C323 C362 C366
Enzyme Commision number 1.8.1.2: assimilatory sulfite reductase (NADPH).
Interaction with ligand
Gene Ontology
Molecular Function
GO:0004783 sulfite reductase (NADPH) activity
GO:0016491 oxidoreductase activity
GO:0020037 heme binding
GO:0050661 NADP binding
GO:0051536 iron-sulfur cluster binding
GO:0051539 4 iron, 4 sulfur cluster binding
Biological Process
GO:0008652 amino acid biosynthetic process
Cellular Component
GO:0009337 sulfite reductase complex (NADPH)

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4aop, PDBe:4aop, PDBj:4aop
PDBsum4aop
PubMed9315848
UniProtP17846|CYSI_ECOLI Sulfite reductase [NADPH] hemoprotein beta-component (Gene Name=cysI)

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