1QTX - JenaLib

Title :   THE 1.65 ANGSTROM STRUCTURE OF CALMODULIN RS20 PEPTIDE COMPLEX

Authors :   S. Weigand, W. F. Anderson

Date :   29 Jun 99 (Deposition) - 24 Jun 03 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.65

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

Keywords :   Calmodulin, Calcium Binding, Helix-Loop-Helix, Signaling, Complex (Calcium- Binding Protein/Peptide), Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. Weigand, L. Shuvalova, T. J. Lukas, S. Mirzoeva, D. M. Watterson, W. F. Anderson
High Resolution Structure Of A Calmodulin Rs20 Peptide Complex
To Be Published
PubMed: search
(for further references see the PDB file header)

Compounds

Molecule 1 - PROTEIN (CALMODULIN)
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PVUCH-1
	Expression System Strain	:	UT481
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562
	Other Details	:	SYNTHETIC CONSTRUCT

Molecule 2 - PROTEIN (RS20)
	Chains	:	B
	Engineered	:	YES
	Fragment	:	CALMODULIN BINDING REGION FROM SMOOTH MUSCLE/NONMUSCLE MYOSIN LIGHT CHAIN KINASE
	Other Details	:	PEPTIDE ANALOG OF THE CALMODULIN RECOGNITION REGION OF CHICKEN SMOOTH MUSCLE/ NONMUSCLE MYOSIN LIGHT CHAIN KINASE
	Synthetic	:	YES

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 5)

Sites (4, 4)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

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

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Chain A from PDB  Type:PROTEIN  Length:148
 aligned with A0MMD0_HORVU | A0MMD0 from UniProtKB/TrEMBL  Length:149

    Alignment length:148
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141        
        A0MMD0_HORVU      2 ADQLTDEQIAEFKEAFSLFDKDGDGCITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLNLMARKMKDTDSEEELKEAFRVFDKDQNGFISAAELRHVMTNLGEKLTDEEVDEMIREADVDGDGQINYEEFVKVMMAK  149
               SCOP domains d1qtxa_ A: Calmodulin                                                                                                                                SCOP domains
               CATH domains ----1qtxA01 A:5-78 EF-hand                                                    1qtxA02 A:79-146 EF-hand                                            -- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhhhh.....eehhhhhhhhhhhh....hhhhhhhhhhhhh......eehhhhhhhhhh.......hhhhhhhhhhhh.....eehhhhhhhhhhhhh...hhhhhhhhhhhhh......eehhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                1qtx A    1 ADQLTDEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLNLMARKMKDTDSEEELKEAFRVFDKDGNGFISAAELRHVMTNLGEKLTDEEVDEMIREADVDGDGQVNYEEFVQVMMAK  148
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140

Chain B from PDB  Type:PROTEIN  Length:21
 aligned with MYLK_CHICK | P11799 from UniProtKB/Swiss-Prot  Length:1906

    Alignment length:36
                                  1740      1750      1760      
          MYLK_CHICK   1731 RRKWQKTGHAVRAIGRLSSMAMISGMSGRKASGSSP 1766
               SCOP domains ------------------------------------ SCOP domains
               CATH domains ------------------------------------ CATH domains
               Pfam domains ------------------------------------ Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhh---------------... Sec.struct. author
                 SAPs(SNPs) ------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------ PROSITE
                 Transcript ------------------------------------ Transcript
                1qtx B    1 RRKWQKTGHAVRAIGRLS---------------SSx   21
                                    10       | -         -   | |
                                            18              19 |
                                                              21-NH2

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 '\|'

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 2)

Pfam Domains (0, 0)

Gene Ontology (17, 18)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (A0MMD0_HORVU | A0MMD0)

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.

Chain B (MYLK_CHICK | P11799)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	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:0016301	kinase activity	Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0004687	myosin light chain kinase activity	Catalysis of the reaction: ATP + myosin-light-chain = ADP + myosin-light-chain phosphate.
	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.
	GO:0004672	protein kinase activity	Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
	GO:0004674	protein serine/threonine kinase activity	Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
	GO:0016740	transferase activity	Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
	GO:0016310	phosphorylation	The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
	GO:0030335	positive regulation of cell migration	Any process that activates or increases the frequency, rate or extent of cell migration.
	GO:0006468	protein phosphorylation	The process of introducing a phosphate group on to a protein.
	GO:0006939	smooth muscle contraction	A process in which force is generated within smooth 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. Smooth muscle differs from striated muscle in the much higher actin/myosin ratio, the absence of conspicuous sarcomeres and the ability to contract to a much smaller fraction of its resting length.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

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Description