COMPLEX BETWEEN THE CYSTINE C-S LYASE C-DES AND ITS REACTION PRODUCT CYSTEINE PERSULFIDE.
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| B | d1elub_ | Alpha and beta proteins (a/b) | PLP-dependent transferase-like | PLP-dependent transferases | Cystathionine synthase-like | Cystine C-S lyase C-des | (Synechocystis sp. PCC 6714 ) [TaxId: 1147 ], | SCOPe (2.08) |
| A | d1elua_ | Alpha and beta proteins (a/b) | PLP-dependent transferase-like | PLP-dependent transferases | Cystathionine synthase-like | Cystine C-S lyase C-des | (Synechocystis sp. PCC 6714 ) [TaxId: 1147 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| B | Aminotran_1_2 | e1eluB2 | A: beta barrels | X: Fusion glycoprotein F2 | H: RIFT-related | T: double psi | F: Aminotran_1_2 | ECOD (v294.2) |
| A | Rubrerythrin | e1eluA2 | A: beta barrels | X: Repetitive alpha hairpins | H: ARM repeat | T: ARM repeat | F: Rubrerythrin | ECOD (v294.2) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| B | 3.90.1150.10 | Alpha Beta | Alpha-Beta Complex | Aspartate Aminotransferase, domain 1 | Aspartate Aminotransferase, domain 1 | CATH (4.3.0) |
| B | 3.40.640.10 | Alpha Beta | 3-Layer(aba) Sandwich | Aspartate Aminotransferase | domain 2 | CATH (4.3.0) |
| A | 3.90.1150.10 | Alpha Beta | Alpha-Beta Complex | Aspartate Aminotransferase, domain 1 | Aspartate Aminotransferase, domain 1 | CATH (4.3.0) |
| A | 3.40.640.10 | Alpha Beta | 3-Layer(aba) Sandwich | Aspartate Aminotransferase | domain 2 | CATH (4.3.0) |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| L-cysteine/cystine lyase M-CSA #848 | Cyst(e)ine C-S lyase (C-DES), isolated from Synechocystis sp. PCC 6714, is a pyridoxal 5'-phosphate (PLP)-dependent enzyme. It catalyses the conversion of cystine to cysteine persulfide, pyruvate and ammonia. The enzyme can also use cysteine, but to a lesser extent. C-DES is an important enzyme in sulfur mobilisation and Fe-S cluster assembly and directs FeS cluster insertion into Synechocystis apoferridoxin in vivo. The observation of a persulfidic intermediate mimics the NifS PLP dependent L-Cysteine desulphurase, although C-DES is missing the largely conserved active site cysteine associated with NifS enzymes. The mechanism for C-DES persulphide formation offers an alternative pathway for the formation of S(0), although the mode of transport of the elemental sulfur has yet to be determined. | Defined by 6 residues: HIS:A-111 [auth A-114]ASP:A-194 [auth A-197]ALA:A-196 [auth A-199]GLN:A-197 [auth A-200]LYS:A-220 [auth A-223]ARG:A-357 [auth A-360] | |
