1HTR	Aspartyl Protease	date	Oct 21, 1994
title	Crystal And Molecular Structures Of Human Progastricsin At 1 Angstroms Resolution
authors	S.A.Moore, A.R.Sielecki, M.N.G.James
compound		source
Molecule: Progastricsin (Pro Segment) Chain: P Ec: 3.4.23.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Organ: Stomach Tissue: Gastric Mucosa Cell: Chief Cells
Molecule: Gastricsin Chain: B Ec: 3.4.23.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Organ: Stomach Tissue: Gastric Mucosa Cell: Chief Cells
symmetry	Space Group: P 42 21 2	R_factor R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 105.310 105.310 70.420 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.62 Å
ligand		enzyme	Hydrolase E.C.3.4.23.3 BRENDA
note	1HTR is a representative structure
related structures	by homologous chain: 1AVF
Gene Ontology	Chain Function Process Component B P
Primary reference	Crystal and molecular structures of human progastricsin at 1.62 A resolution., Moore SA, Sielecki AR, Chernaia MM, Tarasova NI, James MN, J Mol Biol 1995 Mar 31;247(3):466-85. PMID:7714902

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (68 Kb) [Save to disk] Biological Unit Coordinates (1htr.pdb1.gz) 126 Kb Biological Unit Coordinates (1htr.pdb2.gz) 64 Kb CSU: Contacts of Structural Units for 1HTR Likely Quarternary Molecular Structure file(s) for 1HTR Retrieve 1HTR in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HTR from S2C, [Save to disk]

View 1HTR 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 1HTR

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1HTR, from MSDmotif at EBI Genome occurence of 1HTR's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1htr.1, region P:,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: [1htr_B] [1htr] [1htr_P] SWISS-PROT database: [P20142] Domain organization of [PEPC_HUMAN] by SWISSPFAM

Other resources with information on 1HTR

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

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