1BIR	Endoribonuclease	date	Jan 04, 1996
title	Ribonuclease T1, Phe 100 To Ala Mutant Complexed With 2' Gmp
authors	J.Doumen, M.Gonciarz, I.Zegers, R.Loris, L.Wyns, J.Steyaert
compound		source
Molecule: Ribonuclease T1 Chain: A, B Synonym: Rnase T1 Ec: 3.1.27.3 Engineered: Yes Mutation: Yes Other_details: Complex With 2'-Gmp		Organism_scientific: Aspergillus Oryzae Organism_taxid: 5062 Gene: Synthetic Gene Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Pmc5-Rt1 Expression_system_gene: Synthetic Gene Other_details: Steyaert Et Al. (1990) Biochemistry 29, 9064
symmetry	Space Group: P 1 21 1	R_factor 0.186 R_Free 0.240
crystal cell	length a length b length c angle alpha angle beta angle gamma 49.200 48.190 40.160 90.00 90.26 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	2GP, CA	enzyme	Hydrolase E.C.3.1.27.3 BRENDA
related structures	by homologous chain: 1I2E, 5GSP
Gene Ontology	Chain Function Process Component A, B nuclease activity endonuclease activity endoribonuclease activity ribonuclease activity
Primary reference	A catalytic function for the structurally conserved residue Phe 100 of ribonuclease T1., Doumen J, Gonciarz M, Zegers I, Loris R, Wyns L, Steyaert J, Protein Sci 1996 Aug;5(8):1523-30. PMID:8844843

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (40 Kb) [Save to disk] Biological Unit Coordinates (1bir.pdb1.gz) 18 Kb Biological Unit Coordinates (1bir.pdb2.gz) 19 Kb LPC: Ligand-Protein Contacts for 1BIR CSU: Contacts of Structural Units for 1BIR Likely Quarternary Molecular Structure file(s) for 1BIR Structure Factors (115 Kb) Retrieve 1BIR in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1BIR from S2C, [Save to disk] Re-refined 1bir structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1BIR in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1BIR

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1BIR, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1bira_, region A [Jmol] [rasmolscript] [script source]     - Domain d1birb_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1bir] [1bir_B] [1bir_A] SWISS-PROT database: [P00651] Domain organization of [RNT1_ASPOR] by SWISSPFAM

Other resources with information on 1BIR

Community annotation for 1BIR at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 1BIR from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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