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Title :   CRYSTAL AND MOLECULAR STRUCTURE OF THE BOVINE ALPHA-CHYMOTRYPSIN-EGLIN C COMPLEX AT 2.0 ANGSTROMS RESOLUTION

Authors :   M. Bolognesi, F. Frigerio, A. Coda, L. Pugliese, C. Lionetti, E. Menega G. Amiconi, H. P. Schnebli, P. Ascenzi

Date :   08 Nov 91 (Deposition) - 31 Oct 93 (Release) - 17 Nov 10 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.00

Chains :   Asym./Biol. Unit : E,I

Keywords :   Serine Protease, Hydrolase-Hydrolase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   F. Frigerio, A. Coda, L. Pugliese, C. Lionetti, E. Menegatti, G. Amiconi, H. P. Schnebli, P. Ascenzi, M. Bolognesi
Crystal And Molecular Structure Of The Bovine Alpha-Chymotrypsin-Eglin C Complex At 2. 0 A Resolution.
J. Mol. Biol. V. 225 107 1992
PubMed-ID: 1583684 | Reference-DOI: 10.1016/0022-2836(92)91029-O
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (1, 1)

SS Bonds (5, 5)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (4, 4)

Exons (0, 0)

Sequences/Alignments

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain E from PDB  Type:PROTEIN  Length:241
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:245
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240     
           CTRA_BOVIN     1 CGVPAIQPVLSGLSRIVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRYTNANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
               SCOP domains d1acbe_ E: (a  lpha,gamma)-chymotrypsin(ogen)                                                                                                                                                                                                         SCOP domains
               CATH domains -------------  1acbE01     1acbE02 E:28-120,E:233-243 Trypsin-like serine proteases                                     1acbE01 E:16-27,E:121-232   Trypsin-like serine proteases                                                       1acbE02    -- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .............--.............eeeeeee...eeeeeeeeee..eeee..........eeee............eeeeeeeeeee...........eeeeee.........................eeeeeee......--.......eeeeeeee.hhhhh.........eeeeee............eeeeeee..eeeeeeeeee..........eeeeee..hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ---------------TRYPSIN_DOM  PDB: E:16-243 UniProt: 16-243                                                                                                                                                                                          -- PROSITE (2)
                PROSITE (1) ----------------------------------------------------TRYPSI----------------------------------------------------------------------------------------------------------------------------------TRYPSIN_SER --------------------------------------------- PROSITE (1)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1acb E   1 CGVPAIQPVLSGL--IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRY--ANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
                                    10  |  |  20        30        40        50        60        70        80        90       100       110       120       130       140     | 150       160       170       180       190       200       210       220       230       240     
                                       13 16                                                                                                                               146  |                                                                                                
                                                                                                                                                                              149

Chain I from PDB  Type:PROTEIN  Length:63
 aligned with ICIC_HIRME | P01051 from UniProtKB/Swiss-Prot  Length:70

    Alignment length:63
                                    17        27        37        47        57        67   
           ICIC_HIRME     8 KSFPEVVGKTVDQAREYFTLHYPQYDVYFLPEGSPVTLDLRYNRVRVFYNPGTNVVNHVPHVG  70
               SCOP domains d1acbi_ I: Eglin C                                              SCOP domains
               CATH domains 1acbI00 I:8-70 Trypsin Inhibitor V, subunit A                   CATH domains
               Pfam domains --------------------------------------------------------------- Pfam domains
         Sec.struct. author eee.......hhhhhhhhhhhh...eeeee.............eeeeee........eeeeee Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --POTATO_INHIB------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------- Transcript
                 1acb I   8 KSFPEVVGKTVDQAREYFTLHYPQYDVYFLPEGSPVTLDLRYNRVRVFYNPGTNVVNHVPHVG  70
                                    17        27        37        47        57        67

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Classification and Annotation

SCOP Domains (2, 2)

CATH Domains (2, 3)

Pfam Domains (0, 0)

Gene Ontology (14, 14)

Asymmetric/Biological Unit(hide GO term definitions)

Chain E (CTRA_BOVIN | P00766)

molecular function
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0008233	peptidase activity	Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
	GO:0008236	serine-type peptidase activity	Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
	GO:0007586	digestion	The whole of the physical, chemical, and biochemical processes carried out by multicellular organisms to break down ingested nutrients into components that may be easily absorbed and directed into metabolism.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

Chain I (ICIC_HIRME | P01051)

molecular function
	GO:0030414	peptidase inhibitor activity	Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
	GO:0004867	serine-type endopeptidase inhibitor activity	Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
	GO:0010951	negative regulation of endopeptidase activity	Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
	GO:0010466	negative regulation of peptidase activity	Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
	GO:0009611	response to wounding	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to the organism.

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