4CAA	Serpin	date	Aug 14, 1997
title	Cleaved Antichymotrypsin T345r
authors	C.M.Lukacs, D.W.Christianson
compound		source
Molecule: Antichymotrypsin Chain: A 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 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 0.199 R_Free 0.284
crystal cell	length a length b length c angle alpha angle beta angle gamma 72.830 83.510 82.860 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.90 Å
note	4CAA supersedes 1CT3
related structures	by homologous chain: 2ACH
Gene Ontology	Chain Function Process Component A
Primary reference	Engineering 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] (63 Kb) [Save to disk] Biological Unit Coordinates (4caa.pdb1.gz) 59 Kb CSU: Contacts of Structural Units for 4CAA Likely Quarternary Molecular Structure file(s) for 4CAA Retrieve 4CAA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4CAA from S2C, [Save to disk]

View 4CAA in 3D

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Visual 3D analysis of 4CAA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 4CAA, from MSDmotif at EBI Genome occurence of 4CAA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d4caa.1, region A:,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: [4caa_B] [4caa_A] [4caa] SWISS-PROT database: [P01011] Domain organization of [AACT_HUMAN] by SWISSPFAM Domain found in 4CAA: [SERPIN ] by SMART

Other resources with information on 4CAA

Community annotation for 4CAA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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