1AS4 Serpin date Aug 12, 1997
title Cleaved Antichymotrypsin A349r
authors C.M.Lukacs, D.W.Christianson
compound source
Molecule: Antichymotrypsin
Chain: A
Fragment: Chain A Contains Residues 20 - 358, Chain B Contains Residues 359 - 393;
Synonym: Act
Engineered: Yes
Mutation: Yes
Other_details: Cleaved Antichymotrypsin
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Act
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Pzms
Expression_system_gene: Act

Molecule: Antichymotrypsin
Chain: B
Fragment: Chain A Contains Residues 20 - 358, Chain B Contains Residues 359 - 393;
Synonym: Act
Engineered: Yes
Mutation: Yes
Other_details: Cleaved Antichymotrypsin

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Act
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Pzms
Expression_system_gene: Act
symmetry Space Group: P 21 21 21
R_factor 0.198 R_Free 0.240
crystal
cell
length a length b length c angle alpha angle beta angle gamma
71.700 78.350 79.230 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.10 Å
ligand ACT enzyme
related structures by homologous chain: 1QMN
Gene
Ontology
ChainFunctionProcessComponent
A


Primary referenceEngineering an anion-binding cavity in antichymotrypsin modulates the "spring-loaded" serpin-protease interaction., Lukacs CM, Rubin H, Christianson DW, Biochemistry 1998 Mar 10;37(10):3297-304. PMID:9521649
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (65 Kb) [Save to disk]
  • Biological Unit Coordinates (1as4.pdb1.gz) 61 Kb
  • LPC: Ligand-Protein Contacts for 1AS4
  • CSU: Contacts of Structural Units for 1AS4
  • Likely Quarternary Molecular Structure file(s) for 1AS4
  • Retrieve 1AS4 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1AS4 from S2C, [Save to disk]
  • View 1AS4 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 1AS4
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1AS4, from MSDmotif at EBI
  • Genome occurence of 1AS4's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1as4.1, region A:,B [Jmol] [rasmolscript] [script source]
  • Fold representative 1as4 from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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: [1as4] [1as4_A] [1as4_B]
  • SWISS-PROT database: [P01011]
  • Domain organization of [AACT_HUMAN] by SWISSPFAM
  • Domain found in 1AS4: [SERPIN ] by SMART
  • Other resources with information on 1AS4
  • Community annotation for 1AS4 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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