1AVS - JenaLib

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Title :   X-RAY CRYSTALLOGRAPHIC STUDY OF CALCIUM-SATURATED N-TERMINAL DOMAIN OF TROPONIN C

Authors :   N. C. J. Strynadka, M. N. G. James

Date :   19 Sep 97 (Deposition) - 24 Dec 97 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.75

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

Keywords :   Muscle Contraction, Calcium-Activated, Troponin, E-F Hand Calcium-Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   N. C. Strynadka, M. Cherney, A. R. Sielecki, M. X. Li, L. B. Smillie, M. N. James
Structural Details Of A Calcium-Induced Molecular Switch: X-Ray Crystallographic Analysis Of The Calcium-Saturated N-Terminal Domain Of Troponin C At 1. 75 A Resolution.
J. Mol. Biol. V. 273 238 1997
PubMed-ID: 9367759 | Reference-DOI: 10.1006/JMBI.1997.1257
(for further references see the PDB file header)

Molecule 1 - TROPONIN C
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Fragment	:	N-TERMINAL DOMAIN, RESIDUES 1 - 90
	Organism Common	:	CHICKEN
	Organism Scientific	:	GALLUS GALLUS
	Organism Taxid	:	9031
	Tissue	:	BREAST

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (1x)	:	A
Biological Unit 2 (1x)	:		B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 4)

No.	Name	Count	Type	Full Name
1	CA	4	Ligand/Ion	CALCIUM ION

Biological Unit 1 (0, 0)

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

Biological Unit 2 (0, 0)

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

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASP A:30 , ASP A:32 , ASP A:36 , GLU A:41 , HOH A:95 , HOH A:96	BINDING SITE FOR RESIDUE CA A 93
2	AC2	SOFTWARE	ASP A:66 , ASP A:68 , SER A:70 , THR A:72 , GLU A:77 , HOH A:102	BINDING SITE FOR RESIDUE CA A 94
3	AC3	SOFTWARE	ASP B:30 , ASP B:32 , ASP B:36 , GLU B:41 , HOH B:115 , HOH B:144	BINDING SITE FOR RESIDUE CA B 93
4	AC4	SOFTWARE	ASP B:66 , ASP B:68 , SER B:70 , THR B:72 , GLU B:77 , HOH B:122	BINDING SITE FOR RESIDUE CA B 94

(no "SS Bond" information available for 1AVS)

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

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

Asymmetric Unit (2, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	TNNC2_CHICK	18-53 54-89 94-129 130-163	4	A:17-52 B:17-52 A:53-87 B:53-87 - -
2	EF_HAND_1	PS00018	EF-hand calcium-binding domain.	TNNC2_CHICK	31-43 67-79 107-119 143-155	4	A:30-42 B:30-42 A:66-78 B:66-78 - -

Biological Unit 1 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	TNNC2_CHICK	18-53 54-89 94-129 130-163	2	A:17-52 - A:53-87 - - -
2	EF_HAND_1	PS00018	EF-hand calcium-binding domain.	TNNC2_CHICK	31-43 67-79 107-119 143-155	2	A:30-42 - A:66-78 - - -

Biological Unit 2 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	TNNC2_CHICK	18-53 54-89 94-129 130-163	2	- B:17-52 - B:53-87 - -
2	EF_HAND_1	PS00018	EF-hand calcium-binding domain.	TNNC2_CHICK	31-43 67-79 107-119 143-155	2	- B:30-42 - B:66-78 - -

Asymmetric Unit (3, 6)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENSGALT00000011060	1	ENSGALE00000073521	Un_random:20732110-20732258	149	TNNC2_CHICK	1-50	50	2	A:7-49 B:6-49	43 44
1.2	ENSGALT00000011060	2	ENSGALE00000073519	Un_random:20732332-20732446	115	TNNC2_CHICK	50-88	39	2	A:49-87 B:49-87	39 39
1.3	ENSGALT00000011060	3	ENSGALE00000073522	Un_random:20732522-20732658	137	TNNC2_CHICK	88-134	47	2	A:87-87 B:87-87	1 1
1.4	ENSGALT00000011060	4	ENSGALE00000073520	Un_random:20732749-20732979	231	TNNC2_CHICK	134-143	10	0	-	-

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
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	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
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Chain A from PDB  Type:PROTEIN  Length:81
 aligned with TNNC2_CHICK | P02588 from UniProtKB/Swiss-Prot  Length:163

    Alignment length:81
                                    17        27        37        47        57        67        77        87 
           TNNC2_CHICK    8 QAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMK 88
               SCOP domains d1avsa_ A: Troponin C                                                             SCOP domains
               CATH domains 1avsA00 A:7-87 EF-hand                                                            CATH domains
               Pfam domains --------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhh..hhhhhhhhhhhhhh......ee.hhhhhhhhhh......hhhhhhhhhhh.......eehhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----------EF_HAND_2  PDB: A:17-52             EF_HAND_2  PDB: A:53-87             PROSITE (1)
                PROSITE (2) -----------------------EF_HAND_1    -----------------------EF_HAND_1    --------- PROSITE (2)
           Transcript 1 (1) Exon 1.1  PDB: A:7-49 UniProt: 1-50        -------------------------------------1 Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------Exon 1.2  PDB: A:49-87 UniProt: 50-88   Transcript 1 (2)
                  1avs A  7 QAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMK 87
                                    16        26        36        46        56        66        76        86

Chain B from PDB  Type:PROTEIN  Length:82
 aligned with TNNC2_CHICK | P02588 from UniProtKB/Swiss-Prot  Length:163

    Alignment length:82
                                    16        26        36        46        56        66        76        86  
           TNNC2_CHICK    7 QQAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMK 88
               SCOP domains d1avsb_ B: Troponin C                                                              SCOP domains
               CATH domains 1avsB00 B:6-87 EF-hand                                                             CATH domains
               Pfam domains ---------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhh..hhhhhhhhhhhhhh......ee.hhhhhhhhhh......hhhhhhhhhhh.......eehhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -----------EF_HAND_2  PDB: B:17-52             EF_HAND_2  PDB: B:53-87             PROSITE (1)
                PROSITE (2) ------------------------EF_HAND_1    -----------------------EF_HAND_1    --------- PROSITE (2)
           Transcript 1 (1) Exon 1.1  PDB: B:6-49 UniProt: 1-50         -------------------------------------1 Transcript 1 (1)
           Transcript 1 (2) -------------------------------------------Exon 1.2  PDB: B:49-87 UniProt: 50-88   Transcript 1 (2)
                  1avs B  6 QQAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMK 87
                                    15        25        35        45        55        65        75        85

Legend:		→ Mismatch	(orange background)
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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 '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All alpha proteins (14657)

Fold: EF Hand-like (739)

Superfamily: EF-hand (657)

Family: Calmodulin-like (356)

Protein domain: Troponin C (53)

Chicken (Gallus gallus) [TaxId: 9031] (28)

1a	d1avsa_	A:
1b	d1avsb_	B:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Recoverin; domain 1 (474)

Homologous Superfamily: EF-hand (412)

Chicken (Gallus gallus) (34)

1a	1avsB00	B:6-87
1b	1avsA00	A:7-87

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

Asymmetric Unit(hide GO term definitions)

Chain A,B (TNNC2_CHICK | P02588)

molecular function
	GO:0003779	actin binding	Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
	GO:0005509	calcium ion binding	Interacting selectively and non-covalently with calcium ions (Ca2+).
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
biological process
	GO:0003009	skeletal muscle contraction	A process in which force is generated within skeletal muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. In the skeletal muscle, the muscle contraction takes advantage of an ordered sarcomeric structure and in most cases it is under voluntary control.
cellular component
	GO:0005861	troponin complex	A complex of accessory proteins (typically troponin T, troponin I and troponin C) found associated with actin in muscle thin filaments; involved in calcium regulation of muscle contraction.

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