Contacts of the helix formed by residues 443 - 450 (chain I) in PDB entry 6MZL
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASP 443 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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441I PRO 4.3 0.2 + - - -
442I PRO* 1.3 79.2 - - + +
444I ASN* 1.3 55.4 + - - +
445I GLN 3.2 3.8 - - - +
446I ASP* 3.1 19.0 + - + +
447I ALA* 2.6 32.6 + - - +
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Residues in contact with ASN 444 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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441I PRO 6.0 1.3 - - - +
442I PRO 3.6 1.7 - - - -
443I ASP* 1.3 75.4 - - - +
445I GLN* 1.3 57.4 + - - +
447I ALA* 3.8 9.2 - - - +
448I TYR* 2.9 29.6 + - - +
456I GLY* 5.4 1.7 - - - -
457I PRO* 5.9 1.6 - - + -
460I CYS* 3.7 29.7 - - + +
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Residues in contact with GLN 445 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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443I ASP* 3.2 1.0 - - - -
444I ASN* 1.3 79.8 - - - +
446I ASP* 1.3 60.3 + - - +
448I TYR* 3.7 5.9 + - - +
449I ARG* 3.4 18.4 + - - +
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Residues in contact with ASP 446 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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443I ASP* 3.1 23.0 + - + +
445I GLN* 1.3 75.9 - - - +
447I ALA* 1.3 55.9 + - - +
449I ARG* 3.1 10.6 + - - +
450I ALA* 2.6 33.5 + - - +
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Residues in contact with ALA 447 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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442I PRO 4.5 5.8 - - - +
443I ASP 2.6 20.7 + - - +
444I ASN* 3.4 10.1 + - - +
446I ASP* 1.3 70.9 - - - +
448I TYR* 1.3 60.5 + - - +
450I ALA* 3.1 11.9 + - + +
451I GLU* 2.8 29.7 + - - +
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Residues in contact with TYR 448 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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444I ASN 2.9 17.8 + - - +
445I GLN* 3.9 7.0 - - - +
447I ALA* 1.3 73.9 - - - +
449I ARG* 1.3 59.0 + - - +
451I GLU* 4.1 4.5 - - - +
452I PHE 2.8 10.4 + - - -
453I GLY* 2.4 40.9 + - - +
456I GLY* 3.8 29.2 - - - +
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Residues in contact with ARG 449 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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397I GLN* 2.9 18.0 + - - -
445I GLN 3.4 11.3 + - - +
446I ASP* 3.1 12.7 + - - +
448I TYR* 1.3 79.2 - - - +
450I ALA* 1.3 56.6 + - - +
451I GLU 3.2 0.2 - - - -
452I PHE* 3.8 2.3 + - - +
453I GLY 4.7 0.7 - - - +
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Residues in contact with ALA 450 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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396I LEU* 3.3 17.2 - - - +
397I GLN* 3.1 14.4 + - - +
446I ASP 2.6 17.3 + - - +
447I ALA* 3.1 16.1 + - - +
449I ARG* 1.3 69.9 - - - +
451I GLU* 1.3 56.3 + - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il