Structure of PDB 3qs8 Chain B

Receptor sequence

>3qs8B (length=346) Species: 1773 (Mycobacterium tuberculosis)

PSWPQILGRLTDNRDLARGQAAWAMDQIMTGNARPAQIAAFAVAMTMKAP
TADEVGELAGVMLSHAHPLPADTVPDDAVDVVGTGGDGVNTVNLSTMAAI
VVAAAGVPVVKHGNRAASSLSGGADTLEALGVRIDLGPDLVARSLAEVGI
GFCFAPRFHPSYRHAAAVRREIGVPTVFNLLGPLTNPARPRAGLIGCAFA
DLAEVMAGVFAARRSSVLVVHGDDGLDELTTTTTSTIWRVAAGSVDKLTF
DPAGFGFARAQLDQLAGGDAQANAAAVRAVLGGARGPVRDAVVLNAAGAI
VAHAGLSSRAEWLPAWEEGLRRASAAIDTGAAEQLLARWVRFGRQI

3D structure

• PDB: 3qs8 The Substrate Capture Mechanism of Mycobacterium tuberculosis Anthranilate Phosphoribosyltransferase Provides a Mode for Inhibition.
• Chain: B
• Resolution: 2.0 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): V106
• Catalytic site (residue number reindexed from 1): V82
• Enzyme Commision number: 2.4.2.18: anthranilate phosphoribosyltransferase.

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	PRP	B	G107 G109 G110 N117 S119 T120 K135 A140 A141 S142 S143 G146 E252	G83 G85 G86 N93 S95 T96 K111 A116 A117 S118 S119 G122 E228
BS02	MG	B	S119 E252	S95 E228
BS03	MG	B	D251 E252	D227 E228
BS04	17D	B	M86 V106 G107 N138 A179 Y186 R193 G206 T209	M62 V82 G83 N114 A155 Y162 R169 G182 T185

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0004048 anthranilate phosphoribosyltransferase activity
• GO:0016757 glycosyltransferase activity
• GO:0016763 pentosyltransferase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0000162 tryptophan biosynthetic process

Cellular Component

• GO:0005576 extracellular region
• GO:0005829 cytosol
• GO:0005886 plasma membrane

External links

• PDB: RCSB:3qs8, PDBe:3qs8, PDBj:3qs8
• PDBsum: 3qs8
• PubMed: 23363292
• UniProt: P9WFX5|TRPD_MYCTU Anthranilate phosphoribosyltransferase (Gene Name=trpD)