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(-) Description

Title :  THREE DIMENSIONAL STRUCTURE OF PORCINE PANCREATIC PROCARBOXYPEPTIDASE A. A COMPARISON OF THE A AND B ZYMOGENS AND THEIR DETERMINANTS FOR INHIBITION AND ACTIVATION
 
Authors :  A. Guasch, M. Coll, F. X. Aviles, R. Huber
Date :  28 Oct 91  (Deposition) - 31 Oct 93  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A
Keywords :  Hydrolase(C-Terminal Peptidase) (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Guasch, M. Coll, F. X. Aviles, R. Huber
Three-Dimensional Structure Of Porcine Pancreatic Procarboxypeptidase A. A Comparison Of The A And B Zymogens And Their Determinants For Inhibition And Activation.
J. Mol. Biol. V. 224 141 1992
PubMed-ID: 1548696  |  Reference-DOI: 10.1016/0022-2836(92)90581-4
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROCARBOXYPEPTIDASE A PCPA
    Chains: A
    EC Number: 3.4.12.2
    Organism Common: PIG
    Organism Scientific: SUS SCROFA
    Organism Taxid: 9823

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (3, 3)
No.NameCountTypeFull Name
1CIT1Ligand/IonCITRIC ACID
2VAL1Mod. Amino AcidVALINE
3ZN1Ligand/IonZINC ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:69 , GLU A:72 , HIS A:196 , HOH A:701BINDING SITE FOR RESIDUE ZN A 400
2AC2SOFTWAREASP A:19A , ALA A:21A , GLN A:22A , HIS A:71A , GLN A:221 , LYS A:224 , SER A:225 , HOH A:890BINDING SITE FOR RESIDUE CIT A 600
3AC3SOFTWAREARG A:127 , ASN A:144 , ARG A:145 , TYR A:248 , ALA A:250 , GLU A:270 , HOH A:701BINDING SITE FOR RESIDUE VAL A 700

(-) SS Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1A:138 -A:161

(-) Cis Peptide Bonds  (3, 3)

Asymmetric/Biological Unit
No.Residues
1Ser A:197 -Tyr A:198
2Pro A:205 -Tyr A:206
3Arg A:272 -Asp A:273

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1PCA)

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CARBOXYPEPT_ZN_1PS00132 Zinc carboxypeptidases, zinc-binding region 1 signature.CBPA1_PIG170-192  1A:60-82
2CARBOXYPEPT_ZN_2PS00133 Zinc carboxypeptidases, zinc-binding region 2 signature.CBPA1_PIG306-316  1A:196-206

(-) Exons   (0, 0)

(no "Exon" information available for 1PCA)

(-) 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 A from PDB  Type:PROTEIN  Length:403
 aligned with CBPA1_PIG | P09954 from UniProtKB/Swiss-Prot  Length:419

    Alignment length:403
                                    26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306       316       326       336       346       356       366       376       386       396       406       416   
            CBPA1_PIG    17 KEDFVGHQVLRISVDDEAQVQKVKELEDLEHLQLDFWRGPARPGFPIDVRVPFPSIQAVKVFLEAHGIRYTIMIEDVQLLLDEEQEQMFASQGRARTTSTFNYATYHTLEEIYDFMDILVAEHPQLVSKLQIGSSYEGRPIYVLKFSTGGNNRPAIWIDTGIHSREWVTQASGVWFAKKITEDYGQDPAFTAILDNLDIFLEIVTNPDGFAFTHSENRMWRKTRSRTSGSFCVGVDPNRNWDAGFGGAGASSNPCSETYHGKFPNSEVEVKSIVDFVNDHGNIKAFISIHSYSQLLLYPYGYKTEAPADKDELDQISKSAVAALTSLYGTKFQYGSIITTIYQASGGTIDWTYNQGIKYSFSFELRDTGRYGFLLPASQIIPTAQETWLALLTIMEHTLNHPY 419
               SCOP domains d1pcaa1 A:4A-99A Procarboxypeptidase A                                                        d1pcaa2 A:1-308 Carboxypeptidase A                                                                                                                                                                                                                                                                                  - SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------Propep_M14-1pcaA02 A:13A-90A                                                --------------------------Peptidase_M14-1pcaA01 A:18-296                                                                                                                                                                                                                                                         ------------- Pfam domains
         Sec.struct. author .......eeeee...hhhhhhhhhhhhhhhhhh.eeee........eeeeehhhhhhhhhhhhhhh...eeeee.hhhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh...eeeeeeee.....eeeeeee........eeeeee.....hhhhhhhhhhhhhhhhhhh..hhhhhhhhh..eeeee...hhhhhhhhhhh...................hhhhh..........................hhhhhhhhhhhhhhh.eeeeeeee....eeee..........hhhhhhhhhhhhhhhhhhhhh...eeeehhhhh.....hhhhhhhhh...eeeeee...........hhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------CARBOXYPEPT_ZN_1       -----------------------------------------------------------------------------------------------------------------CARBOXYPEPT------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1pca A  4A KEDFVGHQVLRISVDDEAQVQKVKELEDLEHLQLDFWRGPARPGFPIDVRVPFPSIQAVKVFLEAHGIRYTIMIEDVQLLLDEEQEQMFASQGRARTTSTFNYATYHTLEEIYDFMDILVAEHPALVSKLQIGRSYEGRPIYVLKFSTGGSNRPAIWIDSGIHSREWITQASGVWFAKKITENYGQNSSFTAILDSMDIFLEIVTNPNGFAFTHSDNRLWRKTRSKASGSLCVGSDSNRNWDAGFGGAGASSSPCAETYHGKYPNSEVEVKSITDFVKNNGNIKAFISIHSYSQLLLYPYGYKTQSPADKSELNQIAKSAVAALKSLYGTSYKYGSIITVIYQASGGVIDWTYNQGIKYSFSFELRDTGRRGFLLPASQIIPTAQETWLALLTIMEHTLNNSV 700
                            |||||||13A|||||||23A|||||||33A|||||||41A|||||||55A|||||||65A|||||||75A|||||||85A|||||||95A|||||    6        16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306 ||
                            ||||||12A||||||21A||||||30A||||||37A||||||50A||||||59A||||||68A||||||77A||||||86A||||||95A|||||                                                                                                                                                                                                                                                                                                                308|
                           4A||||||13A||||||22A||||||31A||||||38A||||||51A||||||60A||||||69A||||||78A||||||87A||||||96A||||                                                                                                                                                                                                                                                                                                                 700
                            5A||||||14A||||||23A||||||32A||||||39A||||||52A||||||61A||||||70A||||||79A||||||88A||||||97A|||                                                                                                                                                                                                                                                                                                                    
                             6A||||| 15A||||| 24A||||| 33A||||| 40A||||| 53A||||| 62A||||| 71A||||| 80A||||| 89A||||| 98A||                                                                                                                                                                                                                                                                                                                    
                              7A||||  16A||||  25A||||  34A||||  41A||||  54A||||  63A||||  72A||||  81A||||  90A||||  99A|                                                                                                                                                                                                                                                                                                                    
                               8A|||   17A|||   26A|||   34B|||   42A|||   55A|||   64A|||   73A|||   82A|||   91A|||     1                                                                                                                                                                                                                                                                                                                    
                                9A||    18A||    27A||    34C||    47A||    56A||    65A||    74A||    83A||    92A||                                                                                                                                                                                                                                                                                                                          
                                10A|     19A|     28A|     35A|     48A|     57A|     66A|     75A|     84A|     93A|                                                                                                                                                                                                                                                                                                                          
                                 11A      20A      29A      36A      49A      58A      67A      76A      85A      94A
   Legend:   → Mismatch (orange background)
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    → 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)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1PCA)

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: Peptidase_MH (119)
(-)
Clan: no clan defined [family: Propep_M14] (5)

(-) Gene Ontology  (10, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (CBPA1_PIG | P09954)
molecular function
    GO:0004180    carboxypeptidase activity    Catalysis of the hydrolysis of the terminal or penultimate peptide bond at the C-terminal end of a peptide or polypeptide.
    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:0004181    metallocarboxypeptidase activity    Catalysis of the hydrolysis of C-terminal amino acid residues from a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.
    GO:0008237    metallopeptidase activity    Catalysis of the hydrolysis of peptide bonds by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.
    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:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    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.

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