Calcium in PDB 1mct: The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family

Enzymatic activity of The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family

All present enzymatic activity of The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family:
3.4.21.4;

Protein crystallography data

The structure of The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family, PDB code: 1mct was solved by Q.Huang, S.Liu, Y.Tang, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

*Resolution Low / High (Å)*	N/A / 1.60
*Space group*	P 3₂ 2 1
*Cell size a, b, c (Å), α, β, γ (°)*	62.650, 62.650, 124.310, 90.00, 90.00, 120.00
*R / R_free (%)*	16.7 / n/a

Calcium Binding Sites:

The binding sites of Calcium atom in the The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family (pdb code 1mct). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family, PDB code: 1mct:

Calcium binding site 1 out of 1 in 1mct

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Calcium Binding Sites List in 1mct

Calcium binding site 1 out of 1 in the The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family

Mono view

Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of The Refined 1.6 Angstroms Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of Squash Family within 5.0Å range:

probe	atom	residue	distance (Å)	B	Occ
A:Ca246 b:20.9 occ:1.00	H1	A:HOH254	1.7	0.0	1.0
	O	A:VAL75	2.3	14.9	1.0
	OE2	A:GLU80	2.3	18.8	1.0
	OE1	A:GLU70	2.4	12.7	1.0
	O	A:ASN72	2.4	13.6	1.0
	O	A:HOH254	2.6	17.8	1.0
	H2	A:HOH254	2.7	0.0	1.0
	OE1	A:GLU77	2.8	19.4	1.0
	H	A:GLU77	3.1	0.0	1.0
	CD	A:GLU80	3.4	27.9	1.0
	CD	A:GLU70	3.5	14.8	1.0
	C	A:VAL75	3.5	20.6	1.0
	C	A:ASN72	3.5	13.2	1.0
	H	A:HIS71	3.5	0.0	1.0
	CD	A:GLU77	3.6	50.0	1.0
	H	A:VAL75	3.6	0.0	1.0
	H	A:ASN72	3.7	0.0	1.0
	CG	A:GLU77	3.8	38.5	1.0
	CG	A:GLU80	3.8	15.0	1.0
	H1	A:HOH350	3.9	0.0	1.0
	OE2	A:GLU70	3.9	19.3	1.0
	N	A:GLU77	4.0	20.9	1.0
	CA	A:LEU76	4.1	17.3	1.0
	H1	A:HOH328	4.2	0.0	1.0
	N	A:LEU76	4.2	14.3	1.0
	N	A:ASN72	4.2	10.8	1.0
	N	A:VAL75	4.3	12.4	1.0
	CA	A:ILE73	4.3	14.0	1.0
	H2	A:HOH350	4.3	0.0	1.0
	N	A:ILE73	4.4	8.6	1.0
	CA	A:ASN72	4.4	8.1	1.0
	OE1	A:GLU80	4.5	18.2	1.0
	CB	A:GLU77	4.5	27.8	1.0
	CA	A:VAL75	4.5	16.5	1.0
	N	A:HIS71	4.5	14.4	1.0
	C	A:ILE73	4.5	13.4	1.0
	C	A:LEU76	4.6	16.2	1.0
	CB	A:ASN72	4.6	9.2	1.0
	H2	A:HOH255	4.6	0.0	1.0
	O	A:HOH350	4.6	37.4	1.0
	OE2	A:GLU77	4.7	40.8	1.0
	CA	A:GLU70	4.7	12.3	1.0
	CG	A:GLU70	4.7	11.8	1.0
	CD2	A:LEU76	4.8	41.4	1.0
	O	A:ILE73	4.9	14.7	1.0
	CA	A:GLU77	4.9	18.0	1.0
	CB	A:GLU70	4.9	11.3	1.0
	N	A:ASP74	4.9	12.3	1.0

Reference:

Q.Huang, S.Liu, Y.Tang. Refined 1.6 A Resolution Crystal Structure of the Complex Formed Between Porcine Beta-Trypsin and Mcti-A, A Trypsin Inhibitor of the Squash Family. Detailed Comparison with Bovine Beta-Trypsin and Its Complex. J.Mol.Biol. V. 229 1022 1993.
ISSN: ISSN 0022-2836
PubMed: 8445634
DOI: 10.1006/JMBI.1993.1102

Page generated: Mon Jul 7 17:16:28 2025

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