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(-) Description

Title :  UNREDUCED CATHEPSIN L IN COMPLEX WITH STEFIN A
 
Authors :  M. Renko, D. Turk
Date :  22 Nov 09  (Deposition) - 01 Dec 10  (Release) - 01 Dec 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.71
Chains :  Asym. Unit :  A,B,C,D,E,F
Biol. Unit 1:  A,D  (1x)
Biol. Unit 2:  B,E  (1x)
Biol. Unit 3:  C,F  (1x)
Keywords :  Cathepsin, Protease-Inhibitor Complex, Stefin, Cystatin, Papain-Like, Cysteine Protease, Hydrolase, Lysosome, Protease, Thiol Protease, Zymogen, Thiol Protease Inhibitor, Hydrolase-Hydrolase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  M. Renko, D. Turk
Unreduced Cathepsin L In Complex With Stefin A
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - CATHEPSIN L1
    ChainsA, B, C
    EC Number3.4.22.15
    EngineeredYES
    Expression SystemPICHIA PASTORIS
    Expression System PlasmidPPIC9
    Expression System StrainGS115
    Expression System Taxid4922
    Expression System Vector TypePLASMID
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymMAJOR EXCRETED PROTEIN, MEP, CATHEPSIN L1 HEAVY CHAIN, CATHEPSIN L1 LIGHT CHAIN
 
Molecule 2 - CYSTATIN-A
    ChainsD, E, F
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System PlasmidPET3A
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System Vector TypePLASMID
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymCYSTATIN-AS, STEFIN-A

 Structural Features

(-) Chains, Units

  123456
Asymmetric Unit ABCDEF
Biological Unit 1 (1x)A  D  
Biological Unit 2 (1x) B  E 
Biological Unit 3 (1x)  C  F

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 3)

Asymmetric Unit (1, 3)
No.NameCountTypeFull Name
1SCH3Mod. Amino AcidS-METHYL-THIO-CYSTEINE
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1SCH1Mod. Amino AcidS-METHYL-THIO-CYSTEINE
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
1SCH1Mod. Amino AcidS-METHYL-THIO-CYSTEINE
Biological Unit 3 (1, 1)
No.NameCountTypeFull Name
1SCH1Mod. Amino AcidS-METHYL-THIO-CYSTEINE

(-) Sites  (0, 0)

(no "Site" information available for 3KSE)

(-) SS Bonds  (9, 9)

Asymmetric Unit
No.Residues
1A:22 -A:65
2A:56 -A:98
3A:156 -A:209
4B:22 -B:65
5B:56 -B:98
6B:156 -B:209
7C:22 -C:65
8C:56 -C:98
9C:156 -C:209

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Pro A:2 -Arg A:3
2Pro B:2 -Arg B:3

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 3)

Asymmetric Unit (1, 3)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_048851T96MCYTA_HUMANPolymorphism34173813D/E/FT96M

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_048851T96MCYTA_HUMANPolymorphism34173813DT96M

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_048851T96MCYTA_HUMANPolymorphism34173813ET96M

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 3 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_048851T96MCYTA_HUMANPolymorphism34173813FT96M

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

(-) PROSITE Motifs  (4, 12)

Asymmetric Unit (4, 12)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYSTATINPS00287 Cysteine proteases inhibitors signature.CYTA_HUMAN45-58
 
 
  3D:45-58
E:45-58
F:45-58
2THIOL_PROTEASE_CYSPS00139 Eukaryotic thiol (cysteine) proteases cysteine active site.CATL1_HUMAN132-143
 
 
  3A:19-30
B:19-30
C:19-30
3THIOL_PROTEASE_HISPS00639 Eukaryotic thiol (cysteine) proteases histidine active site.CATL1_HUMAN274-284
 
 
  3A:161-171
B:161-171
C:161-171
4THIOL_PROTEASE_ASNPS00640 Eukaryotic thiol (cysteine) proteases asparagine active site.CATL1_HUMAN295-314
 
 
  3A:182-201
B:182-201
C:182-201
Biological Unit 1 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYSTATINPS00287 Cysteine proteases inhibitors signature.CYTA_HUMAN45-58
 
 
  1D:45-58
-
-
2THIOL_PROTEASE_CYSPS00139 Eukaryotic thiol (cysteine) proteases cysteine active site.CATL1_HUMAN132-143
 
 
  1A:19-30
-
-
3THIOL_PROTEASE_HISPS00639 Eukaryotic thiol (cysteine) proteases histidine active site.CATL1_HUMAN274-284
 
 
  1A:161-171
-
-
4THIOL_PROTEASE_ASNPS00640 Eukaryotic thiol (cysteine) proteases asparagine active site.CATL1_HUMAN295-314
 
 
  1A:182-201
-
-
Biological Unit 2 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYSTATINPS00287 Cysteine proteases inhibitors signature.CYTA_HUMAN45-58
 
 
  1-
E:45-58
-
2THIOL_PROTEASE_CYSPS00139 Eukaryotic thiol (cysteine) proteases cysteine active site.CATL1_HUMAN132-143
 
 
  1-
B:19-30
-
3THIOL_PROTEASE_HISPS00639 Eukaryotic thiol (cysteine) proteases histidine active site.CATL1_HUMAN274-284
 
 
  1-
B:161-171
-
4THIOL_PROTEASE_ASNPS00640 Eukaryotic thiol (cysteine) proteases asparagine active site.CATL1_HUMAN295-314
 
 
  1-
B:182-201
-
Biological Unit 3 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYSTATINPS00287 Cysteine proteases inhibitors signature.CYTA_HUMAN45-58
 
 
  1-
-
F:45-58
2THIOL_PROTEASE_CYSPS00139 Eukaryotic thiol (cysteine) proteases cysteine active site.CATL1_HUMAN132-143
 
 
  1-
-
C:19-30
3THIOL_PROTEASE_HISPS00639 Eukaryotic thiol (cysteine) proteases histidine active site.CATL1_HUMAN274-284
 
 
  1-
-
C:161-171
4THIOL_PROTEASE_ASNPS00640 Eukaryotic thiol (cysteine) proteases asparagine active site.CATL1_HUMAN295-314
 
 
  1-
-
C:182-201

(-) Exons   (8, 24)

Asymmetric Unit (8, 24)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1aENST000002644741aENSE00001154693chr3:122044091-122044205115CYTA_HUMAN1-22223D:1-22
E:1-22
F:1-22
22
22
22
1.2aENST000002644742aENSE00001078746chr3:122056394-122056495102CYTA_HUMAN23-56343D:23-56
E:23-56
F:23-56
34
34
34
1.3ENST000002644743ENSE00001154683chr3:122060286-122060819534CYTA_HUMAN57-98423D:57-98
E:57-98
F:57-98
42
42
42

2.1aENST000003431501aENSE00001886667chr9:90340434-90341313880CATL1_HUMAN-00--
2.2bENST000003431502bENSE00002159545chr9:90342509-90342644136CATL1_HUMAN1-42420--
2.3aENST000003431503aENSE00001686191chr9:90342942-90343064123CATL1_HUMAN43-83410--
2.4ENST000003431504ENSE00001692924chr9:90343165-90343311147CATL1_HUMAN84-132493A:1-19
B:1-19
C:1-19
19
19
19
2.5aENST000003431505aENSE00000917752chr9:90343500-90343724225CATL1_HUMAN133-207753A:20-94
B:20-94
C:20-94
75
75
75
2.6bENST000003431506bENSE00000917753chr9:90344488-90344650163CATL1_HUMAN208-262553A:95-149
B:95-149
C:95-149
55
55
55
2.7ENST000003431507ENSE00001618315chr9:90345296-90345413118CATL1_HUMAN262-301403A:149-188
B:149-188
C:149-188
40
40
40
2.8cENST000003431508cENSE00001931704chr9:90345923-90346307385CATL1_HUMAN301-333333A:188-220
B:188-220
C:188-220
33
33
33

(-) 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)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:220
 aligned with CATL1_HUMAN | P07711 from UniProtKB/Swiss-Prot  Length:333

    Alignment length:220
                                   123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333
          CATL1_HUMAN   114 APRSVDWREKGYVTPVKNQGQCGSCWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDTGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDNNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 333
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee.hhhh............hhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh.ee................hhh.eee....eee...hhhhhhhhhhhh..eeeee...hhhhhh....ee...........eeeeeeeeee........eeeeee...........eeeee....hhhhh....eee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------THIOL_PROTEA----------------------------------------------------------------------------------------------------------------------------------THIOL_PROTE----------THIOL_PROTEASE_ASN  ------------------- PROSITE
           Transcript 2 (1) Exon 2.4           Exon 2.5a  PDB: A:20-94 UniProt: 133-207                                   Exon 2.6b  PDB: A:95-149 UniProt: 208-262              --------------------------------------Exon 2.8c  PDB: A:188-220         Transcript 2 (1)
           Transcript 2 (2) ----------------------------------------------------------------------------------------------------------------------------------------------------Exon 2.7  PDB: A:149-188                -------------------------------- Transcript 2 (2)
                 3kse A   1 APRSVDWREKGYVTPVKNQGQCGScWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDAGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDDNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 220
                                    10        20    |   30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220
                                                   25-SCH                                                                                                                                                                                               

Chain B from PDB  Type:PROTEIN  Length:220
 aligned with CATL1_HUMAN | P07711 from UniProtKB/Swiss-Prot  Length:333

    Alignment length:220
                                   123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333
          CATL1_HUMAN   114 APRSVDWREKGYVTPVKNQGQCGSCWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDTGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDNNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 333
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee.hhhh............hhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh.ee................hhh.eee...eeee...hhhhhhhhhhhh..eeeee...hhhhhh....ee...........eeeeeeeeee........eeeeee...........eeeee....hhhhh....eeee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------THIOL_PROTEA----------------------------------------------------------------------------------------------------------------------------------THIOL_PROTE----------THIOL_PROTEASE_ASN  ------------------- PROSITE
           Transcript 2 (1) Exon 2.4           Exon 2.5a  PDB: B:20-94 UniProt: 133-207                                   Exon 2.6b  PDB: B:95-149 UniProt: 208-262              --------------------------------------Exon 2.8c  PDB: B:188-220         Transcript 2 (1)
           Transcript 2 (2) ----------------------------------------------------------------------------------------------------------------------------------------------------Exon 2.7  PDB: B:149-188                -------------------------------- Transcript 2 (2)
                 3kse B   1 APRSVDWREKGYVTPVKNQGQCGScWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDAGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDDNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 220
                                    10        20    |   30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220
                                                   25-SCH                                                                                                                                                                                               

Chain C from PDB  Type:PROTEIN  Length:220
 aligned with CATL1_HUMAN | P07711 from UniProtKB/Swiss-Prot  Length:333

    Alignment length:220
                                   123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333
          CATL1_HUMAN   114 APRSVDWREKGYVTPVKNQGQCGSCWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDTGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDNNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 333
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee.hhhh............hhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh.ee................hhh.eee....eee...hhhhhhhhhhhh..eeeee...hhhhhh....ee...........eeeeeeeeee........eeeeee...........eeeee....hhhhh....eee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------THIOL_PROTEA----------------------------------------------------------------------------------------------------------------------------------THIOL_PROTE----------THIOL_PROTEASE_ASN  ------------------- PROSITE
           Transcript 2 (1) Exon 2.4           Exon 2.5a  PDB: C:20-94 UniProt: 133-207                                   Exon 2.6b  PDB: C:95-149 UniProt: 208-262              --------------------------------------Exon 2.8c  PDB: C:188-220         Transcript 2 (1)
           Transcript 2 (2) ----------------------------------------------------------------------------------------------------------------------------------------------------Exon 2.7  PDB: C:149-188                -------------------------------- Transcript 2 (2)
                 3kse C   1 APRSVDWREKGYVTPVKNQGQCGScWAFSATGALEGQMFRKTGRLISLSEQNLVDCSGPQGNEGCNGGLMDYAFQYVQDNGGLDSEESYPYEATEESCKYNPKYSVANDAGFVDIPKQEKALMKAVATVGPISVAIDAGHESFLFYKEGIYFEPDCSSEDMDHGVLVVGYGFESTESDDNKYWLVKNSWGEEWGMGGYVKMAKDRRNHCGIASAASYPTV 220
                                    10        20    |   30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220
                                                   25-SCH                                                                                                                                                                                               

Chain D from PDB  Type:PROTEIN  Length:98
 aligned with CYTA_HUMAN | P01040 from UniProtKB/Swiss-Prot  Length:98

    Alignment length:98
                                    10        20        30        40        50        60        70        80        90        
           CYTA_HUMAN     1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
               SCOP domains d3ksed_ D: Cystatin A (stefin A)                                                                   SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........ee.hhhhhhhhhhhhhhhhhhhh......eeeeeeeee...eeeeeeee.hhh.eeeeeeee.hhhhh..eeeeeeeeee......... Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------M-- SAPs(SNPs)
                    PROSITE --------------------------------------------CYSTATIN      ---------------------------------------- PROSITE
               Transcript 1 Exon 1.1a  PDB: D:1-22Exon 1.2a  PDB: D:23-56           Exon 1.3  PDB: D:57-98 UniProt: 57-98      Transcript 1
                 3kse D   1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
                                    10        20        30        40        50        60        70        80        90        

Chain E from PDB  Type:PROTEIN  Length:98
 aligned with CYTA_HUMAN | P01040 from UniProtKB/Swiss-Prot  Length:98

    Alignment length:98
                                    10        20        30        40        50        60        70        80        90        
           CYTA_HUMAN     1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
               SCOP domains d3ksee_ E: Cystatin A (stefin A)                                                                   SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........ee.hhhhhhhhhhhhhhhhhhhh......eeeeeeeee...eeeeeeee.hhh.eeeeeeee.hhhhh..eeeeeeeeee......... Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------M-- SAPs(SNPs)
                    PROSITE --------------------------------------------CYSTATIN      ---------------------------------------- PROSITE
               Transcript 1 Exon 1.1a  PDB: E:1-22Exon 1.2a  PDB: E:23-56           Exon 1.3  PDB: E:57-98 UniProt: 57-98      Transcript 1
                 3kse E   1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
                                    10        20        30        40        50        60        70        80        90        

Chain F from PDB  Type:PROTEIN  Length:98
 aligned with CYTA_HUMAN | P01040 from UniProtKB/Swiss-Prot  Length:98

    Alignment length:98
                                    10        20        30        40        50        60        70        80        90        
           CYTA_HUMAN     1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
               SCOP domains d3ksef_ F: Cystatin A (stefin A)                                                                   SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........ee.hhhhhhhhhhhhhhhhhhhh......eeeeeeeee...eeeeeeeee...eeeeeeeee.hhhhh..eeeeeeeeee......... Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------M-- SAPs(SNPs)
                    PROSITE --------------------------------------------CYSTATIN      ---------------------------------------- PROSITE
               Transcript 1 Exon 1.1a  PDB: F:1-22Exon 1.2a  PDB: F:23-56           Exon 1.3  PDB: F:57-98 UniProt: 57-98      Transcript 1
                 3kse F   1 MIPGGLSEAKPATPEIQEIVDKVKPQLEEKTNETYGKLEAVQYKTQVVAGTNYYIKVRAGDNKYMHLKVFKSLPGQNEDLVLTGYQVDKNKDDELTGF  98
                                    10        20        30        40        50        60        70        80        90        

   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  (1, 3)

Asymmetric Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3KSE)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3KSE)

(-) Gene Ontology  (44, 47)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C   (CATL1_HUMAN | P07711)
molecular function
    GO:0005518    collagen binding    Interacting selectively and non-covalently with collagen, a group of fibrous proteins of very high tensile strength that form the main component of connective tissue in animals. Collagen is highly enriched in glycine (some regions are 33% glycine) and proline, occurring predominantly as 3-hydroxyproline (about 20%).
    GO:0004197    cysteine-type endopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
    GO:0008234    cysteine-type peptidase activity    Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
    GO:0001968    fibronectin binding    Interacting selectively and non-covalently with a fibronectin, a group of related adhesive glycoproteins of high molecular weight found on the surface of animal cells, connective tissue matrices, and in extracellular fluids.
    GO:0042393    histone binding    Interacting selectively and non-covalently with a histone, any of a group of water-soluble proteins found in association with the DNA of eukaroytic chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in nonspecific suppression of gene activity.
    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:0043394    proteoglycan binding    Interacting selectively and non-covalently with a proteoglycan, any glycoprotein in which the carbohydrate units are glycosaminoglycans.
    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:0097655    serpin family protein binding    Interacting selectively and non-covalently with any member of the serpin protein family (serine protease inhibitors or classified inhibitor family I4). Serpins are a broadly distributed family of protease inhibitors that use a conformational change to inhibit target enzymes. They are central in controlling many important proteolytic cascades. The majority of serpins inhibit serine proteases, but serpins that inhibit caspases and papain-like cysteine proteases have also been identified. Rarely, serpins perform a non-inhibitory function; for example, several human serpins function as hormone transporters and certain serpins function as molecular chaperones or tumor suppressors.
biological process
    GO:0002250    adaptive immune response    An immune response mediated by cells expressing specific receptors for antigen produced through a somatic diversification process, and allowing for an enhanced secondary response to subsequent exposures to the same antigen (immunological memory).
    GO:0019882    antigen processing and presentation    The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
    GO:0019886    antigen processing and presentation of exogenous peptide antigen via MHC class II    The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.
    GO:0097067    cellular response to thyroid hormone stimulus    A change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a thyroid hormone stimulus.
    GO:0030574    collagen catabolic process    The proteolytic chemical reactions and pathways resulting in the breakdown of collagen in the extracellular matrix, usually carried out by proteases secreted by nearby cells.
    GO:0022617    extracellular matrix disassembly    A process that results in the breakdown of the extracellular matrix.
    GO:0071888    macrophage apoptotic process    Any apoptotic process in a macrophage, a mononuclear phagocyte present in a variety of tissues.
    GO:0006508    proteolysis    The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
    GO:0051603    proteolysis involved in cellular protein catabolic process    The hydrolysis of a peptide bond or bonds within a protein as part of the chemical reactions and pathways resulting in the breakdown of a protein by individual cells.
    GO:0002224    toll-like receptor signaling pathway    Any series of molecular signals generated as a consequence of binding to a toll-like receptor. Toll-like receptors directly bind pattern motifs from a variety of microbial sources to initiate innate immune response.
cellular component
    GO:0036021    endolysosome lumen    The volume enclosed by the membrane of an endolysosome. An endolysosome is a transient hybrid organelle formed by fusion of a late endosome with a lysosome.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    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.
    GO:0043202    lysosomal lumen    The volume enclosed within the lysosomal membrane.
    GO:0005764    lysosome    A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

Chain D,E,F   (CYTA_HUMAN | P01040)
molecular function
    GO:0004869    cysteine-type endopeptidase inhibitor activity    Stops, prevents or reduces the activity of a cysteine-type endopeptidase, any enzyme that hydrolyzes peptide bonds in polypeptides by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
    GO:0004866    endopeptidase inhibitor activity    Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
    GO:0030414    peptidase inhibitor activity    Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
    GO:0002020    protease binding    Interacting selectively and non-covalently with any protease or peptidase.
    GO:0030674    protein binding, bridging    The binding activity of a molecule that brings together two or more protein molecules, or a protein and another macromolecule or complex, through a selective, non-covalent, often stoichiometric interaction, permitting those molecules to function in a coordinated way.
    GO:0005198    structural molecule activity    The action of a molecule that contributes to the structural integrity of a complex or its assembly within or outside a cell.
biological process
    GO:0007155    cell adhesion    The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.
    GO:0030216    keratinocyte differentiation    The process in which a relatively unspecialized cell acquires specialized features of a keratinocyte.
    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:0045861    negative regulation of proteolysis    Any process that stops, prevents, or reduces the frequency, rate or extent of the hydrolysis of a peptide bond or bonds within a protein.
    GO:0018149    peptide cross-linking    The formation of a covalent cross-link between or within protein chains.
    GO:0016337    single organismal cell-cell adhesion    The attachment of one cell to another cell via adhesion molecules, where both cells are part of the same organism.
cellular component
    GO:0001533    cornified envelope    A type of plasma membrane that has been modified through addition of distinct intracellular and extracellular components, including ceramide, found in cornifying epithelial cells (corneocytes).
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    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.
    GO:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CATL1_HUMAN | P077111cjl 1cs8 1icf 1mhw 2nqd 2vhs 2xu1 2xu3 2xu4 2xu5 2yj2 2yj8 2yj9 2yjb 2yjc 3bc3 3h89 3h8b 3h8c 3hha 3hwn 3iv2 3k24 3of8 3of9 4axl 4axm 5f02 5i4h 5mae 5maj 5mqy
        CYTA_HUMAN | P010401cyu 1cyv 1dvc 1dvd 1gd3 1gd4 1n9j 1nb3 1nb5 3k9m 3kfq

(-) Related Entries Specified in the PDB File

3a9n CATHEPSIN V IN COMPLEX WITH STEFIN A
3kfq UNREDUCED CATHEPSIN V IN COMPLEX WITH STEFIN A