8API	Proteinase Inhibitor	date	Sep 08, 1988
title	The S Variant Of Human Alpha1-Antitrypsin, Structure And Imp For Function And Metabolism
authors	H.Loebermann, R.Tokuoka, J.Deisenhofer, R.Huber
compound		source
Molecule: Alpha-1 Antitrypsin (Chain A) Chain: A		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Alpha-1 Antitrypsin (Chain B) Chain: B		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
symmetry	Space Group: P 65 2 2	R_factor 0.215 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 119.700 119.700 216.300 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	3.10 Å
ligand	CYS, MAN, NAG	enzyme
note	8API supersedes 6API
Gene Ontology	Chain Function Process Component A, B protease binding serine-type endopeptidase in... protein binding peptidase inhibitor activity... platelet degranulation acute-phase response blood coagulation hemostasis negative regulation of pepti... negative regulation of endop... regulation of proteolysis platelet activation extracellular region proteinaceous extracellular ... extracellular space platelet alpha granule lumen...
Primary reference	The S variant of human alpha 1-antitrypsin, structure and implications for function and metabolism., Engh R, Lobermann H, Schneider M, Wiegand G, Huber R, Laurell CB, Protein Eng 1989 Mar;2(6):407-15. PMID:2785270

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (72 Kb) [Save to disk] Biological Unit Coordinates (8api.pdb1.gz) 65 Kb LPC: Ligand-Protein Contacts for 8API CSU: Contacts of Structural Units for 8API Likely Quarternary Molecular Structure file(s) for 8API Retrieve 8API in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 8API from S2C, [Save to disk]

View 8API 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 8API

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 8API, from MSDmotif at EBI Genome occurence of 8API's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d8api.1, region A:,B [Jmol] [rasmolscript] [script source] Fold representative 8api 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: [8api_A] [8api_B] SWISS-PROT database: [P01009] Domain organization of [A1AT_HUMAN] by SWISSPFAM Domain found in 8API: [SERPIN ] by SMART Alignments of the sequence of 8API with the sequences similar proteins can be viewed for 8API's classification [A1AT_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [A1AT_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 8API

Community annotation for 8API 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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