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1H1H

Crystal Structure of Eosinophil Cationic Protein in Complex with 2',5'-ADP at 2.0 A resolution Reveals the Details of the Ribonucleolytic Active site

Functional Information from GO Data
ChainGOidnamespacecontents
A0001530molecular_functionlipopolysaccharide binding
A0002227biological_processinnate immune response in mucosa
A0003676molecular_functionnucleic acid binding
A0004518molecular_functionnuclease activity
A0004519molecular_functionendonuclease activity
A0004540molecular_functionRNA nuclease activity
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0006401biological_processRNA catabolic process
A0006935biological_processchemotaxis
A0016787molecular_functionhydrolase activity
A0019731biological_processantibacterial humoral response
A0035578cellular_componentazurophil granule lumen
A0042742biological_processdefense response to bacterium
A0043152biological_processinduction of bacterial agglutination
A0045087biological_processinnate immune response
A0050829biological_processdefense response to Gram-negative bacterium
A0050830biological_processdefense response to Gram-positive bacterium
A0061844biological_processantimicrobial humoral immune response mediated by antimicrobial peptide
Functional Information from PDB Data
site_idAC1
Number of Residues13
DetailsBINDING SITE FOR RESIDUE A2P A1134
ChainResidue
AMET0
AHOH2050
AHOH2051
AHOH2052
AHOH2053
AGLN4
AGLN14
AHIS15
AASN32
ATYR33
AARG34
ALYS38
AHIS128

Functional Information from PROSITE/UniProt
site_idPS00127
Number of Residues7
DetailsRNASE_PANCREATIC Pancreatic ribonuclease family signature. CKnqNTF
ChainResidueDetails
ACYS37-PHE43

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues44
DetailsRegion: {"description":"Required for nearly all of the bactericidal activity; partially involved in LPS-binding and bacterial membrane depolarization"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton acceptor"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Proton donor"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsSite: {"description":"May be involved in LPS-binding"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsSite: {"description":"May be involved in LPS- and LTA-binding"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"3'-nitrotyrosine","evidences":[{"source":"PubMed","id":"18694936","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues3
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a4y
ChainResidueDetails
ALYS38
AHIS15
AHIS128

242500

PDB entries from 2025-10-01

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