PDB: 1b6r Compound: n5-carboxyaminoimidazole ribonucleotide synthetase Classification: LYASE Entry date in PDB: 1999-11-30 Resolution [Å]: 2.10 R-Factor: 0.197

CHAIN: A SWISS-PROT/TREMBL: P09029    KEYWORD: 3D-structure    Complete proteome    Decarboxylase    Lyase    Purine biosynthesis    EC: 4.1.1.21 SCOP: b.84.2.1 All beta proteins    Barrel-sandwich hybrid    Rudiment single hybrid motif    BC C-terminal domain-like    N5-carboxyaminoimidazole ribonucleotide synthetase PurK (AIRC), C-domain    Escherichia coli SCOP: c.30.1.1 Alpha and beta proteins (a/b)    PreATP-grasp domain    PreATP-grasp domain    BC N-terminal domain-like    N5-carboxyaminoimidazole ribonucleotide synthetase PurK (AIRC), N-domain    Escherichia coli SCOP: d.142.1.2 Alpha and beta proteins (a+b)    ATP-grasp    Glutathione synthetase ATP-binding domain-like    BC ATP-binding domain-like    N5-carboxyaminoimidazole ribonucleotide synthetase PurK (AIRC), domain 2    Escherichia coli GO:  phosphoribosylaminoimidazole carboxylase complex    catalytic activity    phosphoribosylaminoimidazole carboxylase activity    'de novo' IMP biosynthesis

Image Source: PDB

Loops in ArchDB40 clusters

1b6r_A_221 - HA => SUBCLASS : 2.2.16
1b6r_A_160 - HA => SUBCLASS : 3.1.1
1b6r_A_160 - HA => SUBCLASS : 5.1.4
1b6r_A_314 - EH => SUBCLASS : 2.1.3
1b6r_A_314 - EH => SUBCLASS : 2.1.15
1b6r_A_2 - EH => SUBCLASS : 3.2.1
1b6r_A_174 - AR => SUBCLASS : 3.26.1
1b6r_A_150 - AR => SUBCLASS : 5.26.1
1b6r_A_73 - HH => SUBCLASS : 1.2.2

Loops in ArchDB95 clusters

1b6r_A_314 - EH => SUBCLASS : 2.1.2
1b6r_A_2 - EH => SUBCLASS : 3.5.1
1b6r_A_150 - AR => SUBCLASS : 3.8.3
1b6r_A_73 - HH => SUBCLASS : 1.1.1
1b6r_A_325 - HH => SUBCLASS : 2.3.23
1b6r_A_221 - HA => SUBCLASS : 2.2.14
1b6r_A_160 - HA => SUBCLASS : 5.1.3
1b6r_A_160 - HA => SUBCLASS : 5.4.2

Loops in ArchDB-EC clusters

1b6r_A_325 - HH => SUBCLASS : 2.3.14

Loops not clustered in ArchDB

1b6r_A_131 - AR
1b6r_A_280 - AR
1b6r_A_174 - AR
1b6r_A_150 - AR
1b6r_A_131 - AR
1b6r_A_25 - AR
1b6r_A_280 - AR
1b6r_A_25 - AR
1b6r_A_45 - EH
1b6r_A_97 - EH
1b6r_A_188 - EH
1b6r_A_233 - EH
1b6r_A_300 - HA
1b6r_A_221 - HA
1b6r_A_180 - HA
1b6r_A_160 - HA
1b6r_A_116 - HA
1b6r_A_300 - HA
1b6r_A_116 - HA
1b6r_A_180 - HA
1b6r_A_80 - HE
1b6r_A_258 - HE
1b6r_A_200 - HE
1b6r_A_106 - HE
1b6r_A_11 - HE
1b6r_A_250 - HH
1b6r_A_57 - HH

1b6s A - percentage of sequence identity: 99
1b6s B - percentage of sequence identity: 99
1b6s C - percentage of sequence identity: 99
1b6s D - percentage of sequence identity: 99