Structure of PDB 1r0b Chain B

Receptor sequence
>1r0bB (length=310) Species: 562 (Escherichia coli) [Search protein sequence]
ANPLYQKHIISINDLSRDDLNLVLATAAKLKANPQPELLKHKVIASCFFE
ASTRTRLSFETSMHRLGASVVGFSDSANTSLGKKGETLADTISVISTYVD
AIVMRHPQEGAARLATEFSGNVPVLNAGDGSNQHPTQTLLDLFTIQETQG
RLDNLHVAMVGDLKYGRTVHSLTQALAKFDGNRFYFIAPDALAMPQYILD
MLDEKGIAWSLHSSIEEVMAEVDILYMTRVQKERLDPSEYANVKAQFVLR
ASDLHNAKANMKVLHPLPRVDEIATDVDKTPHAWYFQQAGNGIFARQALL
ALVLNRDLVL
3D structure
PDB1r0b Aspartate Transcarbamylase (ATCase) of Escherichia coli: A New Crystalline R-State Bound to PALA, or to Product Analogues Citrate and Phosphate
ChainB
Resolution2.9 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R54 T55 K84 R105 H134 Q137 T228 P266 G292
Catalytic site (residue number reindexed from 1) R54 T55 K84 R105 H134 Q137 T228 P266 G292
Enzyme Commision number 2.1.3.2: aspartate carbamoyltransferase.
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 FLC B H134 Q137 R167 T168 R229 Q231 P268 H134 Q137 R167 T168 R229 Q231 P268
BS02 PO4 B S52 T53 R54 T55 R105 P268 S52 T53 R54 T55 R105 P268
Gene Ontology
Molecular Function
GO:0004070 aspartate carbamoyltransferase activity
GO:0004088 carbamoyl-phosphate synthase (glutamine-hydrolyzing) activity
GO:0005515 protein binding
GO:0016597 amino acid binding
GO:0016740 transferase activity
GO:0016743 carboxyl- or carbamoyltransferase activity
GO:0042802 identical protein binding
Biological Process
GO:0006207 'de novo' pyrimidine nucleobase biosynthetic process
GO:0006221 pyrimidine nucleotide biosynthetic process
GO:0006520 amino acid metabolic process
GO:0006541 glutamine metabolic process
GO:0044205 'de novo' UMP biosynthetic process
GO:0070207 protein homotrimerization
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0009347 aspartate carbamoyltransferase complex

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1r0b, PDBe:1r0b, PDBj:1r0b
PDBsum1r0b
PubMed15157075
UniProtP0A786|PYRB_ECOLI Aspartate carbamoyltransferase catalytic subunit (Gene Name=pyrB)

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