1ECY - JenaLib

Title :   PROTEASE INHIBITOR ECOTIN

Authors :   D. H. Shin, S. W. Suh

Date :   06 Aug 96 (Deposition) - 12 Feb 97 (Release) - 28 Jul 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.19

Chains :   Asym. Unit : A
Biol. Unit 1: A  (2x)

Keywords :   Beta-Sheet Structure, Serine Protease Inhibitor, Periplasmic (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   D. H. Shin, H. K. Song, I. S. Seong, C. S. Lee, C. H. Chung, S. W. Suh
Crystal Structure Analyses Of Uncomplexed Ecotin In Two Crystal Forms: Implications For Its Function And Stability.
Protein Sci. V. 5 2236 1996
PubMed-ID: 8931142
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 31)

Sites (32, 32)

Asymmetric Unit (32, 32)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	MET A:85 , HOH A:220 , GLC A:302	BINDING SITE FOR RESIDUE GLC A 301
02	AC2	SOFTWARE	ASP A:75 , HOH A:220 , GLC A:301	BINDING SITE FOR RESIDUE GLC A 302
03	AC3	SOFTWARE	GLC A:304	BINDING SITE FOR RESIDUE GLC A 303
04	AC4	SOFTWARE	GLC A:303 , GLC A:307 , GLC A:330	BINDING SITE FOR RESIDUE GLC A 304
05	AC5	SOFTWARE	VAL A:4 , HIS A:53 , PRO A:80 , VAL A:81 , SER A:82 , GLC A:306	BINDING SITE FOR RESIDUE GLC A 305
06	AC6	SOFTWARE	VAL A:4 , ILE A:10 , TYR A:69 , SER A:79 , PRO A:80 , LYS A:112 , GLC A:305	BINDING SITE FOR RESIDUE GLC A 306
07	AC7	SOFTWARE	GLC A:304 , BGC A:308 , GLC A:330	BINDING SITE FOR RESIDUE GLC A 307
08	AC8	SOFTWARE	LYS A:76 , HOH A:206 , HOH A:274 , GLC A:307	BINDING SITE FOR RESIDUE BGC A 308
09	AC9	SOFTWARE	LEU A:52 , ARG A:108 , GLC A:310 , GLC A:315	BINDING SITE FOR RESIDUE GLC A 309
10	BC1	SOFTWARE	ARG A:108 , GLC A:309 , GLC A:321 , GLC A:322	BINDING SITE FOR RESIDUE GLC A 310
11	BC2	SOFTWARE	GLC A:312 , GLC A:314	BINDING SITE FOR RESIDUE GLC A 311
12	BC3	SOFTWARE	GLN A:30 , GLU A:31 , GLC A:311 , BGC A:318	BINDING SITE FOR RESIDUE GLC A 312
13	BC4	SOFTWARE	GLC A:314 , BGC A:318 , GLC A:327	BINDING SITE FOR RESIDUE BGC A 313
14	BC5	SOFTWARE	LYS A:18 , GLU A:31 , GLC A:311 , BGC A:313 , BGC A:318 , GLC A:328	BINDING SITE FOR RESIDUE GLC A 314
15	BC6	SOFTWARE	GLU A:39 , LEU A:41 , LYS A:94 , GLC A:309 , BGC A:316	BINDING SITE FOR RESIDUE GLC A 315
16	BC7	SOFTWARE	SER A:34 , LYS A:37 , GLU A:39 , ARG A:108 , TRP A:130 , GLC A:315	BINDING SITE FOR RESIDUE BGC A 316
17	BC8	SOFTWARE	HOH A:203 , BGC A:318 , GLC A:325	BINDING SITE FOR RESIDUE GLC A 317
18	BC9	SOFTWARE	GLC A:312 , BGC A:313 , GLC A:314 , GLC A:317 , GLC A:329	BINDING SITE FOR RESIDUE BGC A 318
19	CC1	SOFTWARE	GLC A:320	BINDING SITE FOR RESIDUE GLC A 319
20	CC2	SOFTWARE	ALA A:1 , THR A:28 , LYS A:135 , ASP A:137 , GLC A:319	BINDING SITE FOR RESIDUE GLC A 320
21	CC3	SOFTWARE	ALA A:104 , HOH A:224 , GLC A:310 , GLC A:322	BINDING SITE FOR RESIDUE GLC A 321
22	CC4	SOFTWARE	ASP A:70 , TYR A:72 , LEU A:107 , ARG A:108 , GLC A:310 , GLC A:321	BINDING SITE FOR RESIDUE GLC A 322
23	CC5	SOFTWARE	GLU A:8 , GLU A:133 , BGC A:324	BINDING SITE FOR RESIDUE GLC A 323
24	CC6	SOFTWARE	PRO A:6 , LEU A:7 , GLU A:8 , GLN A:15 , ARG A:22 , GLU A:133 , GLU A:134 , GLC A:323	BINDING SITE FOR RESIDUE BGC A 324
25	CC7	SOFTWARE	GLC A:317 , GLC A:326	BINDING SITE FOR RESIDUE GLC A 325
26	CC8	SOFTWARE	HOH A:233 , GLC A:325 , BGC A:331	BINDING SITE FOR RESIDUE GLC A 326
27	CC9	SOFTWARE	LYS A:18 , GLU A:65 , HOH A:261 , HOH A:264 , BGC A:313 , BGC A:331	BINDING SITE FOR RESIDUE GLC A 327
28	DC1	SOFTWARE	GLU A:17 , GLU A:31 , HOH A:279 , GLC A:314 , GLC A:329	BINDING SITE FOR RESIDUE GLC A 328
29	DC2	SOFTWARE	GLU A:31 , ASP A:32 , BGC A:318 , GLC A:328	BINDING SITE FOR RESIDUE GLC A 329
30	DC3	SOFTWARE	ARG A:54 , ASP A:89 , GLC A:304 , GLC A:307	BINDING SITE FOR RESIDUE GLC A 330
31	DC4	SOFTWARE	HOH A:276 , GLC A:326 , GLC A:327	BINDING SITE FOR RESIDUE BGC A 331
32	P1	UNKNOWN	MET A:84	P1 REACTIVE SITE.

SS Bonds (1, 1)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Asymmetric 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)
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Chain A from PDB  Type:PROTEIN  Length:142
 aligned with ECOT_ECOLI | P23827 from UniProtKB/Swiss-Prot  Length:162

    Alignment length:142
                                    30        40        50        60        70        80        90       100       110       120       130       140       150       160  
           ECOT_ECOLI    21 AESVQPLEKIAPYPQAEKGMKRQVIQLTPQEDESTLKVELLIGQTLEVDCNLHRLGGKLENKTLEGWGYDYYVFDKVSSPVSTMMACPDGKKEKKFVTAYLGDAGMLRYNSKLPIVVYTPDNVDVKYRVWKAEEKIDNAVVR 162
               SCOP domains d1ecya_ A: Ecotin, trypsin inhibitor                                                                                                           SCOP domains
               CATH domains 1ecyA00 A:1-142  [code=2.60.40.550, no name defined]                                                                                           CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhh.........eeeeee..........eeeeeeeeeeeee.....eeeeeeeeee......eeeeeeeeeeee...........eeeeee..hhhhhh........eeeeee...eeeeeeeee....eeeeee Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ecy A   1 AESVQPLEKIAPYPQAEKGMKRQVIQLTPQEDESTLKVELLIGQTLEVDCNLHRLGGKLENKTLEGWGYDYYVFDKVSSPVSTMMACPDGKKEKKFVTAYLGDAGMLRYNSKLPIVVYTPDNVDVKYRVWKAEEKIDNAVVR 142
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140

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	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 (1, 1)

CATH Domains (1, 1)

Pfam Domains (0, 0)

Gene Ontology (7, 7)

Asymmetric Unit(hide GO term definitions)

Chain A (ECOT_ECOLI | P23827)

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: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.
cellular component
	GO:0030288	outer membrane-bounded periplasmic space	The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall.
	GO:0042597	periplasmic space	The region between the inner (cytoplasmic) and outer membrane (Gram-negative Bacteria) or cytoplasmic membrane and cell wall (Fungi and Gram-positive Bacteria).

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