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Asym./Biol. Unit (Jmol Viewer)

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Title :   SCALLOP MYOSIN REGULATORY DOMAIN

Authors :   A. Houdusse, C. Cohen

Date :   19 Jan 96 (Deposition) - 11 Jul 96 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.00

Chains :   Asym./Biol. Unit : A,B,C

Keywords :   Myosin, Calcium Binding Protein, Muscle Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. Houdusse, C. Cohen
Structure Of The Regulatory Domain Of Scallop Myosin At 2 A Resolution: Implications For Regulation.
Structure V. 4 21 1996
PubMed-ID: 8805510 | Reference-DOI: 10.1016/S0969-2126(96)00154-2
(for further references see the PDB file header)

Molecule 1 - SCALLOP MYOSIN
	Chains	:	A
	Fragment	:	PROTEOLYTIC FRAGMENT, REGULATORY DOMAIN
	Organ	:	SKELETAL
	Organism Scientific	:	ARGOPECTEN IRRADIANS
	Organism Taxid	:	31199
	Other Details	:	PH 7.0
	Tissue	:	SKELETAL MUSCLE

Molecule 2 - SCALLOP MYOSIN
	Chains	:	B
	Fragment	:	PROTEOLYTIC FRAGMENT, REGULATORY DOMAIN
	Organ	:	SKELETAL
	Organism Scientific	:	ARGOPECTEN IRRADIANS
	Organism Taxid	:	31199
	Other Details	:	PH 7.0
	Tissue	:	SKELETAL MUSCLE

Molecule 3 - SCALLOP MYOSIN
	Chains	:	C
	Fragment	:	PROTEOLYTIC FRAGMENT, REGULATORY DOMAIN
	Organ	:	SKELETAL
	Organism Scientific	:	ARGOPECTEN IRRADIANS
	Organism Taxid	:	31199
	Other Details	:	PH 7.0
	Tissue	:	SKELETAL MUSCLE

		1	2	3
Asymmetric/Biological Unit	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 2)

No.	Name	Count	Type	Full Name
1	CA	1	Ligand/Ion	CALCIUM ION
2	MG	1	Ligand/Ion	MAGNESIUM ION

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASP C:19 , ASP C:22 , GLY C:23 , ASP C:25 , ALA C:27 , HOH C:512	BINDING SITE FOR RESIDUE CA C 501
2	AC2	SOFTWARE	ASP B:28 , ASP B:30 , ASP B:32 , PHE B:34 , ASP B:39 , HOH B:527	BINDING SITE FOR RESIDUE MG B 502

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

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

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

Asymmetric/Biological Unit (3, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	MLE_ARGIR	7-44 82-117	2	C:6-43 C:81-116
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	MLR_ARGIR	16-51 85-120	2	B:15-50 B:84-119
2	EF_HAND_1	PS00018	EF-hand calcium-binding domain.	MLR_ARGIR	29-41	1	B:28-40
3	IQ	PS50096	IQ motif profile.	MYS_ARGIR	778-805	1	A:778-805

(no "Exon" information available for 1WDC)

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:64
 aligned with MYS_ARGIR | P24733 from UniProtKB/Swiss-Prot  Length:1938

    Alignment length:64
                                   783       793       803       813       823       833    
            MYS_ARGIR   774 RDERLSKIISMFQAHIRGYLIRKAYKKLQDQRIGLSVIQRNIRKWLVLRNWQWWKLYSKVKPLL 837
               SCOP domains ---------------------------------------------------------------- SCOP domains
               CATH domains 1wdcA00 A:774-837 Myosin, subunit A                              CATH domains
               Pfam domains ---------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----IQ  PDB: A:778-805          -------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------- Transcript
                 1wdc A 774 RDERLSKIISMFQAHIRGYLIRKAYKKLQDQRIGLSVIQRNIRKWLVLRNWQWWKLYSKVKPLL 837
                                   783       793       803       813       823       833

Chain B from PDB  Type:PROTEIN  Length:142
 aligned with MLR_ARGIR | P13543 from UniProtKB/Swiss-Prot  Length:157

    Alignment length:142
                                    22        32        42        52        62        72        82        92       102       112       122       132       142       152  
            MLR_ARGIR    13 LPQKQIQEMKEAFSMIDVDRDGFVSKEDIKAISEQLGRAPDDKELTAMLKEAPGPLNFTMFLSIFSDKLSGTDSEETIRNAFAMFDEQETKKLNIEYIKDLLENMGDNFNKDEMRMTFKEAPVEGGKFDYVKFTAMIKGSGE 154
               SCOP domains d1wdcb_ B: Myosin Essential Chain                                                                                                              SCOP domains
               CATH domains 1wdcB01 B:12-81 EF-hand                                               1wdcB02 B:82-149 EF-hand                                            ---- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhh.........hhhhhhhhhhh.....hhhhhhhh........hhhhhhhhhhh......hhhhhhhhhhh.........hhhhhhhhhh......hhhhhhhh...........hhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ---EF_HAND_2  PDB: B:15-50             ---------------------------------EF_HAND_2  PDB: B:84-119            ---------------------------------- PROSITE (2)
                PROSITE (3) ----------------EF_HAND_1    ----------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1wdc B  12 LPQKQIQEMKEAFSMIDVDRDGFVSKEDIKAISEQLGRAPDDKELTAMLKEAPGPLNFTMFLSIFSDKLSGTDSEETIRNAFAMFDEQETKKLNIEYIKDLLENMGDNFNKDEMRMTFKEAPVEGGKFDYVKFTAMIKGSGE 153
                                    21        31        41        51        61        71        81        91       101       111       121       131       141       151

Chain C from PDB  Type:PROTEIN  Length:152
 aligned with MLE_ARGIR | P07291 from UniProtKB/Swiss-Prot  Length:157

    Alignment length:152
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153  
            MLE_ARGIR     4 LSQDEIDDLKDVFELFDFWDGRDGAVDAFKLGDVCRCLGINPRNEDVFAVGGTHKMGEKSLPFEEFLPAYEGLMDCEQGTFADYMEAFKTFDREGQGFISGAELRHVLTALGERLSDEDVDEIIKLTDLQEDLEGNVKYEDFVKKVMAGPYP 155
               SCOP domains d1wdcc_ C: Myosin Regulatory Chain                                                                                                                       SCOP domains
               CATH domains 1wdcC01 C:3-80 EF-hand                                                        1wdcC02 C:81-152 EF-hand                                                -- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhh.......hhhhhhhhhhh.....hhhhhhh............hhhhhhhhhhhhh.....hhhhhhhhhhh......eeehhhhhhhhhh......hhhhhhhhhhh........eeehhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---EF_HAND_2  PDB: C:6-43 UniProt: 7-44  -------------------------------------EF_HAND_2  PDB: C:81-116            -------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1wdc C   3 LSQDEIDDLKDVFELFDFWDGRDGAVDAFKLGDVCRCLGINPRNEDVFAVGGTHKMGEKSLPFEEFLPAYEGLMDCEQGTFADYMEAFKTFDREGQGFISGAELRHVLTALGERLSDEDVDEIIKLTDLQEDLEGNVKYEDFVKKVMAGPYP 154
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152

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: All alpha proteins (14657)

Fold: EF Hand-like (739)

Superfamily: EF-hand (657)

Family: Calmodulin-like (356)

Protein domain: Myosin Essential Chain (18)

Bay scallop (Aequipecten irradians) [TaxId: 31199] (13)

d1wdcb_

Protein domain: Myosin Regulatory Chain (16)

Bay scallop (Aequipecten irradians) [TaxId: 31199] (15)

d1wdcc_

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Few Secondary Structures (1120)

Architecture: Irregular (1120)

Topology: Myosin, subunit A (2)

Homologous Superfamily: Myosin, subunit A (2)

Argopecten irradians. Organism_taxid: 31199. (1)

1wdcA00

A:774-837

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Recoverin; domain 1 (474)

Homologous Superfamily: EF-hand (412)

Argopecten irradians. Organism_taxid: 31199. (5)

2a	1wdcC02	C:81-152
2b	1wdcB01	B:12-81
2c	1wdcB02	B:82-149
2d	1wdcC01	C:3-80

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

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (MYS_ARGIR | P24733)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	GO:0003779	actin binding	Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
	GO:0005516	calmodulin binding	Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
	GO:0003774	motor activity	Catalysis of the generation of force resulting either in movement along a microfilament or microtubule, or in torque resulting in membrane scission, coupled to the hydrolysis of a nucleoside triphosphate.
	GO:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0030016	myofibril	The contractile element of skeletal and cardiac muscle; a long, highly organized bundle of actin, myosin, and other proteins that contracts by a sliding filament mechanism.
	GO:0016459	myosin complex	A protein complex, formed of one or more myosin heavy chains plus associated light chains and other proteins, that functions as a molecular motor; uses the energy of ATP hydrolysis to move actin filaments or to move vesicles or other cargo on fixed actin filaments; has magnesium-ATPase activity and binds actin. Myosin classes are distinguished based on sequence features of the motor, or head, domain, but also have distinct tail regions that are believed to bind specific cargoes.
	GO:0032982	myosin filament	A protein complex containing myosin heavy chains, plus associated light chains and other proteins, in which the myosin heavy chains are arranged into a filament.

Chain B (MLR_ARGIR | P13543)

molecular function
	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.
cellular component
	GO:0016459	myosin complex	A protein complex, formed of one or more myosin heavy chains plus associated light chains and other proteins, that functions as a molecular motor; uses the energy of ATP hydrolysis to move actin filaments or to move vesicles or other cargo on fixed actin filaments; has magnesium-ATPase activity and binds actin. Myosin classes are distinguished based on sequence features of the motor, or head, domain, but also have distinct tail regions that are believed to bind specific cargoes.

Chain C (MLE_ARGIR | P07291)

molecular function
	GO:0005509	calcium ion binding	Interacting selectively and non-covalently with calcium ions (Ca2+).
cellular component
	GO:0016459	myosin complex	A protein complex, formed of one or more myosin heavy chains plus associated light chains and other proteins, that functions as a molecular motor; uses the energy of ATP hydrolysis to move actin filaments or to move vesicles or other cargo on fixed actin filaments; has magnesium-ATPase activity and binds actin. Myosin classes are distinguished based on sequence features of the motor, or head, domain, but also have distinct tail regions that are believed to bind specific cargoes.

Asymmetric/Biological Unit
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Description

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Ligands, Modified Residues, Ions (2, 2)

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