PDBsum entry 2ynb

Hydrolase

PDB id: 2ynb

Contents

Protein chains

306 a.a.

Ligands

G85

Metals

_NI ×2

Waters ×481

PDB id:

2ynb

Name:

Hydrolase

Title:

Crystal structure of the main protease of coronavirus hku4 in complex with a michael acceptor sg85

Structure:

3c-like proteinase. Chain: a, b. Synonym: bat coronavirus hku4 main protease, 3cl-pro, 3clp, nsp5. Engineered: yes. Other_details: sg85 is linked to cysteine 148 of chain b

Source:

Tylonycteris bat coronavirus hku4. Organism_taxid: 694007. Strain: hku4-1. Expressed in: escherichia coli. Expression_system_taxid: 469008. Expression_system_variant: gold

Resolution:

1.96Å R-factor: 0.173 R-free: 0.198

Authors:

Q.Ma,Y.Xiao,R.Hilgenfeld

Key ref:

Q.Ma et al. Inhibitor for the main protease of coronavirus hku4. To be published, .

Date:

13-Oct-12 Release date: 23-Oct-13

Protein chains

P0C6T4  (R1A_BCHK4) -  Replicase polyprotein 1a from Bat coronavirus HKU4

Seq: 4434 a.a.

Struc: 306 a.a.

Enzyme reactions

• Enzyme class 1: E.C.2.7.7.50 - mRNA guanylyltransferase.
• Reaction: a 5'-end diphospho-ribonucleoside in mRNA + GTP + H⁺ = a 5'-end (5'-triphosphoguanosine)-ribonucleoside in mRNA + diphosphate
• Enzyme class 2: E.C.3.4.19.12 - ubiquitinyl hydrolase 1.
• Reaction: Thiol-dependent hydrolysis of ester, thiolester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
• Enzyme class 3: E.C.3.4.22.- - ?????
• Enzyme class 4: E.C.3.4.22.69 - Sars coronavirus main proteinase.

Note, where more than one E.C. class is given (as above), each may correspond to a different protein domain or, in the case of polyprotein precursors, to a different mature protein.

Molecule diagrams generated from .mol files obtained from the KEGG ftp site