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Title :   CRYSTAL STRUCTURE OF RIBONUCLEASE H FROM THERMUS THERMOPHILUS HB8 REFINED AT 2.8 ANGSTROMS RESOLUTION

Authors :   K. Ishikawa, M. Okumura, K. Katayanagi, S. Kimura, S. Kanaya, H. Nakamura, K. Morikawa

Date :   14 Jan 93 (Deposition) - 31 Oct 93 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

Chains :   Asym./Biol. Unit : A

Keywords :   Hydrolase(Endoribonuclease) (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   K. Ishikawa, M. Okumura, K. Katayanagi, S. Kimura, S. Kanaya, H. Nakamura, K. Morikawa
Crystal Structure Of Ribonuclease H From Thermus Thermophilus Hb8 Refined At 2. 8 A Resolution.
J. Mol. Biol. V. 230 529 1993
PubMed-ID: 8385228 | Reference-DOI: 10.1006/JMBI.1993.1169
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (1, 1)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

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Exons (0, 0)

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Chain A from PDB  Type:PROTEIN  Length:147
 aligned with RNH_THET8 | P29253 from UniProtKB/Swiss-Prot  Length:166

    Alignment length:147
                                    15        25        35        45        55        65        75        85        95       105       115       125       135       145       
            RNH_THET8     6 RKRVALFTDGACLGNPGPGGWAALLRFHAHEKLLSGGEACTTNNRMELKAAIEGLKALKEPCEVDLYTDSHYLKKAFTEGWLEGWRKRGWRTAEGKPVKNRDLWEALLLAMAPHRVRFHFVKGHTGHPENERVDREARRQAQSQAKT 152
               SCOP domains d1rila_ A: RNase H (RNase HI)                                                                                                                       SCOP domains
               CATH domains 1rilA00 A:2-147  [code=3.30.420.10, no name defined]                                                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeeeeee....eeeeeeeeee..eeeeeeeee...hhhhhhhhhhhhhhhhh...eeeeeee.hhhhhhhhhh.hhhhhhhhh..........hhhhhhhhhhhhh..eeeee..........hhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ril A   2 RKRVALFTDGACLGNPGPGGWAALLRFHAHEKLLSGGEACTTNNRMELKAAIEGLKALKEPCEVDLYTDSHYLKKAFTEGWLEGWRKRGWRTAEGKPVKNRDLWEALLLAMAPHRVRFHFVKGHTGHPENERVDREARRQAQSQAKT 147
                                    11        21        31        41        51        61        71       80B        90       100       110       120       130       140       
                                                                                                         80B

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Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (0, 0)

Gene Ontology (11, 11)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (RNH_THET8 | P29253)

molecular function
	GO:0004523	RNA-DNA hybrid ribonuclease activity	Catalysis of the endonucleolytic cleavage of RNA in RNA-DNA hybrids to 5'-phosphomonoesters.
	GO:0004519	endonuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0000287	magnesium ion binding	Interacting selectively and non-covalently with magnesium (Mg) ions.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0004518	nuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids.
	GO:0003676	nucleic acid binding	Interacting selectively and non-covalently with any nucleic acid.
biological process
	GO:0006401	RNA catabolic process	The chemical reactions and pathways resulting in the breakdown of RNA, ribonucleic acid, one of the two main type of nucleic acid, consisting of a long, unbranched macromolecule formed from ribonucleotides joined in 3',5'-phosphodiester linkage.
	GO:0090502	RNA phosphodiester bond hydrolysis, endonucleolytic	The chemical reactions and pathways involving the hydrolysis of internal 3',5'-phosphodiester bonds in one or two strands of ribonucleotides.
	GO:0090305	nucleic acid phosphodiester bond hydrolysis	The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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