1JJV

DEPHOSPHO-COA KINASE IN COMPLEX WITH ATP

Summary for 1JJV

• Entry DOI: 10.2210/pdb1jjv/pdb
• Descriptor: DEPHOSPHO-COA KINASE, SULFATE ION, MERCURY (II) ION, ... (5 entities in total)
• Functional Keywords: p-loop nucleotide-binding fold, structure 2 function project, s2f, structural genomics, transferase
• Biological source: Haemophilus influenzae
• Cellular location: Cytoplasm (By similarity): P44920
• Total number of polymer chains: 1
• Total formula weight: 24116.34

Authors

Obmolova, G.,Teplyakov, A.,Bonander, N.,Eisenstein, E.,Howard, A.J.,Gilliland, G.L.,Structure 2 Function Project (S2F) (deposition date: 2001-07-09, release date: 2002-05-01, Last modification date: 2024-02-07)

Primary citation

Obmolova, G.,Teplyakov, A.,Bonander, N.,Eisenstein, E.,Howard, A.J.,Gilliland, G.L.
Crystal structure of dephospho-coenzyme A kinase from Haemophilus influenzae.
J.Struct.Biol., 136:119-125, 2001

PubMed Abstract: Dephospho-coenzyme A kinase catalyzes the final step in CoA biosynthesis, the phosphorylation of the 3'-hydroxyl group of ribose using ATP as a phosphate donor. The protein from Haemophilus influenzae was cloned and expressed, and its crystal structure was determined at 2.0-A resolution in complex with ATP. The protein molecule consists of three domains: the canonical nucleotide-binding domain with a five-stranded parallel beta-sheet, the substrate-binding alpha-helical domain, and the lid domain formed by a pair of alpha-helices. The overall topology of the protein resembles the structures of nucleotide kinases. ATP binds in the P-loop in a manner observed in other kinases. The CoA-binding site is located at the interface of all three domains. The double-pocket structure of the substrate-binding site is unusual for nucleotide kinases. Amino acid residues implicated in substrate binding and catalysis have been identified. The structure analysis suggests large domain movements during the catalytic cycle.

PubMed: 11886213
DOI: 10.1006/jsbi.2001.4428

Experimental method

X-RAY DIFFRACTION (2 Å)