Structure of PDB 2ad5 Chain B

Receptor sequence
>2ad5B (length=536) Species: 83333 (Escherichia coli K-12) [Search protein sequence]
MTTNYIFVTGGVVSSLGKGIAAASLAAILEARGLNVTIMKLDPYINVDPG
TMSPIQHGEVFVTEDGAETDLDLGHYERFIRTKMSRRNNFTTGRIYSDVL
RKERRGDYLGATVQVIPHITNAIKERVLEGGEGHDVVLVEIGGTVGDIES
LPFLEAIRQMAVEIGREHTLFMHLTLVPYMAASGEVKTKPTQHSVKELLS
IGIQPDILICRSDRAVPANERAKIALFCNVPEKAVISLKDVDSIYKIPGL
LKSQGLDDYICKRFSLNCPEANLSEWEQVIFEEANPVSEVTIGMVGKYIE
LPDAYKSVIEALKHGGLKNRVSVNIKLIDSQDVETRGVEILKGLDAILVP
GGFGYRGVEGMITTARFARENNIPYLGICLGMQVALIDYARHVANMENAN
STEFVPDCKYPVVALITEWRDENGNVEVTMRLGAQQCQLVDDSLVRQLYN
APTIVERHRHRYEVNNMLLKQIEDAGLRVAGRSGDDQLVEIIEVPNHPWF
VACQFHPEFTSTPRDGHPLFAGFVKAASEFQKRQAK
3D structure
PDB2ad5 Mechanisms of Product Feedback Regulation and Drug Resistance in Cytidine Triphosphate Synthetases from the Structure of a CTP-Inhibited Complex(,).
ChainB
Resolution2.8 Å
3D
structure
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Enzymatic activity
Enzyme Commision number 6.3.4.2: CTP synthase (glutamine hydrolyzing).
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 CTP B K187 T188 K189 Q192 K223 K187 T188 K189 Q192 K223 PDBbind-CN: -logKd/Ki=3.96,Ki=110uM
BS02 MG B G19 D72 E140 G19 D72 E140
BS03 ADP B S15 G17 K18 G19 I20 D240 V241 I247 S15 G17 K18 G19 I20 D240 V241 I247
BS04 CTP B S14 D147 I148 E149 S14 D147 I148 E149 PDBbind-CN: -logKd/Ki=3.96,Ki=110uM
Gene Ontology
Molecular Function
GO:0000287 magnesium ion binding
GO:0003883 CTP synthase activity
GO:0004359 glutaminase activity
GO:0005524 ATP binding
GO:0016874 ligase activity
GO:0042802 identical protein binding
GO:0046872 metal ion binding
Biological Process
GO:0006221 pyrimidine nucleotide biosynthetic process
GO:0006241 CTP biosynthetic process
GO:0006541 glutamine metabolic process
GO:0019856 pyrimidine nucleobase biosynthetic process
GO:0044210 'de novo' CTP biosynthetic process
GO:0051289 protein homotetramerization
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0032991 protein-containing complex
GO:0097268 cytoophidium

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:2ad5, PDBe:2ad5, PDBj:2ad5
PDBsum2ad5
PubMed16216072
UniProtP0A7E5|PYRG_ECOLI CTP synthase (Gene Name=pyrG)

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