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Asym./Biol. Unit (Jmol Viewer)

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Title :   THE CRYSTAL STRUCTURE OF ANIONIC SALMON TRYPSIN IN COMPLEX WITH BOVINE PANCREATIC TRYPSIN INHIBITOR

Authors :   R. Helland, I. Leiros, G. I. Berglund, N. P. Willassen, A. O. Smalas

Date :   05 Nov 98 (Deposition) - 11 Nov 98 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.10

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

Keywords :   Trypsin, Serine Proteinases, Cold Adaptation, Inhibitor, Substrate Specificity, Hydrolase/Hydrolase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. Helland, I. Leiros, G. I. Berglund, N. P. Willassen, A. O. Smalas
The Crystal Structure Of Anionic Salmon Trypsin In Complex With Bovine Pancreatic Trypsin Inhibitor.
Eur. J. Biochem. V. 256 317 1998
PubMed-ID: 9760170 | Reference-DOI: 10.1046/J.1432-1327.1998.2560317.X
(for further references see the PDB file header)

Molecule 1 - PROTEIN (TRYPSIN)
	Chains	:	E
	EC Number	:	3.4.21.4
	Organism Common	:	ATLANTIC SALMON
	Organism Scientific	:	SALMO SALAR
	Organism Taxid	:	8030

Molecule 2 - PROTEIN (BOVINE PANCREATIC TRYPSIN INHIBITOR)
	Chains	:	I
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913

		1	2
Asymmetric/Biological Unit	:	E	I

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 1)

No.	Name	Count	Type	Full Name
1	CA	1	Ligand/Ion	CALCIUM ION

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLU E:70 , ASN E:72 , VAL E:75 , GLU E:77 , GLU E:80	BINDING SITE FOR RESIDUE CA E 700

Asymmetric/Biological Unit

No.	Residues
1	E:22	-	E:157
2	E:42	-	E:58
3	E:128	-	E:232
4	E:136	-	E:201
5	E:168	-	E:182
6	E:191	-	E:220
7	I:505	-	I:555
8	I:514	-	I:538
9	I:530	-	I:551

(no "Cis Peptide Bond" information available for 1BZX)

Asymmetric/Biological Unit (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_TRY1_SALSA_001 *	T	33	A	TRY1_SALSA	---	---	E	P	28	A
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric/Biological Unit (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	TRY1_SALSA	21-240	1	E:16-243
2	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	1	I:505-555
3	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	TRY1_SALSA	56-61	1	E:53-58
4	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	1	I:533-551
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	TRY1_SALSA	190-201	1	E:189-200

(no "Exon" information available for 1BZX)

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:222
 aligned with TRY1_SALSA | P35031 from UniProtKB/Swiss-Prot  Length:242

    Alignment length:222
                                    30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240  
          TRY1_SALSA     21 IVGGYECKAYSQTHQVSLNSGYHFCGGSLVNENWVVSAAHCYKSRVEVRLGEHNIKVTEGSEQFISSSRVIRHPNYSSYNIDNDIMLIKLSKPATLNTYVQPVALPTSCAPAGTMCTVSGWGNTMSSTADSNKLQCLNIPILSYSDCNNSYPGMITNAMFCAGYLEGGKDSCQGDSGGPVVCNGELQGVVSWGYGCAEPGNPGVYAKVCIFNDWLTSTMASY  242
               SCOP domains d1bzxe_ E: Trypsin(ogen)                                                                                                                                                                                                       SCOP domains
               CATH domains 1bzxE01     1bzxE02 E:28-120,E:233-245 Trypsin-like serine proteases                                  1bzxE01 E:16-27,E:121-232 Trypsin-like serine proteases                                                    1bzxE02       CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..............eeeee...eeeeeeeee..eeee.hhh.....eeee............eeeeeeeeee.............eeeee........................eeeeee..............eeeeee...hhhhhhh........eeee................eeee..eeeeeeee..........eeeeehhh.hhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------A----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: E:16-243 UniProt: 21-240                                                                                                                                                                                  -- PROSITE (1)
                PROSITE (2) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------TRYPSIN_SER ----------------------------------------- PROSITE (2)
                PROSITE (3) -----------------------------------TRYPSI------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                1bzx E   16 IVGGYECKPYSQPHQVSLNSGYHFCGGSLVNENWVVSAAHCYKSRVEVRLGEHNIKVTEGSEQFISSSRVIRHPNYSSYNIDNDIMLIKLSKPATLNTYVQPVALPTSCAPAGTMCTVSGWGNTMSSTADSNKLQCLNIPILSYSDCNNSYPGMITNAMFCAGYLEGGKDSCQGDSGGPVVCNGELQGVVSWGYGCAEPGNPGVYAKVCIFNDWLTSTMASY  245
                                    25        37        47        57        67|       78        88        98       108       118      |129||     140    || 151       161       171       181  |    189       199    || 213   || |223       233       243  
                                             34|                            67|                                                     125|  ||          145|                                 184A 188A              204|     217| |                         
                                              37                             69                                                      127  ||           147                                                         209      219 |                         
                                                                                                                                        130|                                                                                 221A                         
                                                                                                                                         132

Chain I from PDB  Type:PROTEIN  Length:58
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:58
                                    45        55        65        75        85        
          BPT1_BOVIN     36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA   93
               SCOP domains d1bzxi_ I: Pancreatic trypsin inhibitor, BPTI              SCOP domains
               CATH domains 1bzxI00 I:501-558 Factor Xa Inhibitor                      CATH domains
               Pfam domains ---------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhh...........eeeeeee....eeeeeee............hhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----BPTI_KUNITZ_2  PDB: I:505-555 UniProt: 40-90       --- PROSITE (2)
                PROSITE (3) --------------------------------BPTI_KUNITZ_1      ------- PROSITE (3)
                 Transcript ---------------------------------------------------------- Transcript
                1bzx I  501 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA  558
                                   510       520       530       540       550

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 '\|'

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Few Secondary Structures (1120)

Architecture: Irregular (1120)

Topology: Factor Xa Inhibitor (116)

Homologous Superfamily: Factor Xa Inhibitor (116)

Atlantic salmon (Salmo salar) (1)

1bzxI00

I:501-558

Class: Mainly Beta (13760)

Architecture: Beta Barrel (4804)

Topology: Thrombin, subunit H (1535)

Homologous Superfamily: Trypsin-like serine proteases (1488)

Atlantic salmon (Salmo salar) (12)

2a	1bzxE01	E:16-27,E:121-232
2b	1bzxE02	E:28-120,E:233-245

(no "Pfam Domain" information available for 1BZX)

Asymmetric/Biological Unit(hide GO term definitions)

Chain E (TRY1_SALSA | P35031)

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:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	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: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 (BPT1_BOVIN | P00974)

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:0019870	potassium channel inhibitor activity	Stops, prevents, or reduces the activity of a potassium channel.
	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: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:0090331	negative regulation of platelet aggregation	Any process that decreases the rate, frequency or extent of platelet aggregation. Platelet aggregation is the adhesion of one platelet to one or more other platelets via adhesion molecules.
	GO:0070495	negative regulation of thrombin-activated receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of thrombin-activated receptor protein signaling pathway activity. A thrombin receptor signaling pathway is the series of molecular signals generated as a consequence of a thrombin-activated receptor binding to one of its physiological ligands.
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.

Asymmetric/Biological Unit
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(no "Related Entries Specified in the PDB File" available for 1BZX)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 1)

Sites (1, 1)

SS Bonds (9, 9)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 1)

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