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Asym./Biol. Unit (Jmol Viewer)

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Title :   BETA FORM OF CARBOXYPEPTIDASE A (RESIDUES 3-307) FROM BOVINE PANCREAS IN AN ORTHORHOMBIC CRYSTAL FORM WITH TWO ZINC IONS IN THE ACTIVE SITE.

Authors :   J. T. Bukrinsky, M. J. Bjerrum, A. Kadziola

Date :   27 Jul 98 (Deposition) - 05 Aug 98 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.00

Chains :   Asym./Biol. Unit : A

Keywords :   Metalloprotease, Hydrolase, Carboxypeptidase, Zinc Inhibition, Induced Fit (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. T. Bukrinsky, M. J. Bjerrum, A. Kadziola
Native Carboxypeptidase A In A New Crystal Environment Reveals A Different Conformation Of The Important Tyrosine 248.
Biochemistry V. 37 16555 1998
PubMed-ID: 9843422 | Reference-DOI: 10.1021/BI981678I
(for further references see the PDB file header)

Molecule 1 - PROTEIN (CARBOXYPEPTIDASE A)
	Chains	:	A
	EC Number	:	3.4.17.1
	Organ	:	PANCREAS
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Other Details	:	TRUNCATED FORM OF CPA (RESIDUES 3-307 I.E. THE BETA FORM) INDUCED BY TRACES OF TRYPSIN
	Other Details - Source	:	SIGMA #C0261; COX ET AL. (1964) BIOCHEMISTRY 3, 44-47
	Synonym	:	CPA, BETA FORM

		1
Asymmetric/Biological Unit	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 3)

No.	Name	Count	Type	Full Name
1	OH	1	Ligand/Ion	HYDROXIDE ION
2	ZN	2	Ligand/Ion	ZINC ION

Asymmetric Unit (6, 6)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	HIS A:69 , GLU A:72 , HIS A:196 , ZN A:309 , OH A:541	BINDING SITE FOR RESIDUE ZN A 308
2	AC2	SOFTWARE	GLU A:270 , ZN A:308 , OH A:541	BINDING SITE FOR RESIDUE ZN A 309
3	AC3	SOFTWARE	HIS A:69 , GLU A:72 , HIS A:196 , SER A:197 , GLU A:270 , ZN A:308 , ZN A:309	BINDING SITE FOR RESIDUE OH A 541
4	CZN	AUTHOR	OH A:541 , HIS A:69 , GLU A:72 , HIS A:196	CATALYTIC ZN 308 WITH LIGANDS: HIS 69, GLU 72, HIS 196 AND OH 541
5	IZN	AUTHOR	ZN A:309 , GLU A:270 , OH A:541	INHIBITORY ZN 309 WITH LIGANDS: GLU 270 AND OH 541
6	PCI	AUTHOR	HOH A:516 , ASN A:144 , ARG A:145 , TYR A:248	BINDING SITE FOR PARTLY COMPETITIVE ANIONS

Asymmetric/Biological Unit

No.	Residues
1	A:138	-	A:161

Asymmetric/Biological Unit

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

Asymmetric/Biological Unit (3, 3)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_CBPA1_BOVIN_001 *	I	289	V	CBPA1_BOVIN	---	---	A	I	179	V
2	UniProt	VAR_CBPA1_BOVIN_002 *	E	338	A	CBPA1_BOVIN	---	---	A	A	228	A
3	UniProt	VAR_CBPA1_BOVIN_003 *	L	415	V	CBPA1_BOVIN	---	---	A	V	305	V
	* ID not provided by source

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

Asymmetric/Biological Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CARBOXYPEPT_ZN_1	PS00132	Zinc carboxypeptidases, zinc-binding region 1 signature.	CBPA1_BOVIN	170-192	1	A:60-82
2	CARBOXYPEPT_ZN_2	PS00133	Zinc carboxypeptidases, zinc-binding region 2 signature.	CBPA1_BOVIN	306-316	1	A:196-206

(no "Exon" information available for 1CPX)

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:305
 aligned with CBPA1_BOVIN | P00730 from UniProtKB/Swiss-Prot  Length:419

    Alignment length:305
                                   122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382       392       402       412     
          CBPA1_BOVIN   113 STNTFNYATYHTLDEIYDFMDLLVAEHPQLVSKLQIGRSYEGRPIYVLKFSTGGSNRPAIWIDLGIHSREWITQATGVWFAKKFTEDYGQDPSFTAILDSMDIFLEIVTNPDGFAFTHSQNRLWRKTRSVTSSSLCVGVDANRNWDAGFGKAGASSSPCSETYHGKYANSEVEVKSIVDFVKDHGNFKAFLSIHSYSQLLLYPYGYTTQSIPDKTELNQVAKSAVEALKSLYGTSYKYGSIITTIYQASGGSIDWSYNQGIKYSFTFELRDTGRYGFLLPASQIIPTAQETWLGVLTIMEHTLNN 417
               SCOP domains d1cpxa_ A: Carboxypeptidase A                                                                                                                                                                                                                                                                                     SCOP domains
               CATH domains 1cpxA00 A:3-307 Zn peptidases                                                                                                                                                                                                                                                                                     CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ............hhhhhhhhhhhhhh....eeeeeeee.....eeeeeee.......eeeeeee......hhhhhhhhhhhhhhhhh....hhhhhhh..eeeeee....hhhhhhhhh.....................hhh............................hhhhhhhhhhhhh..eeeeeeee....eeee...........hhhhhhhhhhhhhhhhhhh....eeeehhhh.......hhhhhhhh...eeeeee............hhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------V------------------------------------------------A----------------------------------------------------------------------------V-- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------CARBOXYPEPT_ZN_1       -----------------------------------------------------------------------------------------------------------------CARBOXYPEPT----------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1cpx A   3 STNTFNYATYHTLDEIYDFMDLLVAEHPQLVSKLQIGRSYEGRPIYVLKFSTGGSNRPAIWIDLGIHSREWITQATGVWFAKKFTEDYGQDPSFTAILDSMDIFLEIVTNPDGFAFTHSQNRLWRKTRSVTSSSLCVGVDANRNWDAGFGKAGASSSPCSETYHGKYANSEVEVKSIVDFVKDHGNFKAFLSIHSYSQLLLYPYGYTTQSIPDKTELNQVAKSAVAALKSLYGTSYKYGSIITTIYQASGGSIDWSYNQGIKYSFTFELRDTGRYGFLLPASQIIPTAQETWLGVLTIMEHTVNN 307
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302

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(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a/b) (23833)

Fold: Phosphorylase/hydrolase-like (558)

Superfamily: Zn-dependent exopeptidases (214)

Family: Pancreatic carboxypeptidases (77)

Protein domain: Carboxypeptidase A (41)

Cow (Bos taurus) [TaxId: 9913] (34)

d1cpxa_

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Aminopeptidase (284)

Homologous Superfamily: Zn peptidases (137)

Cattle (Bos taurus) (28)

1cpxA00

A:3-307

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

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (CBPA1_BOVIN | P00730)

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.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Arg A:272 - Asp A:273	[ RasMol ]
		Pro A:205 - Tyr A:206	[ RasMol ]
		Ser A:197 - Tyr A:198	[ RasMol ]

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	1cpx
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Description

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Ligands, Modified Residues, Ions (2, 3)

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SS Bonds (1, 1)

Cis Peptide Bonds (3, 3)

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