Contacts of the helix formed by residues 493 - 499 (chain A) in PDB entry 6S1M
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 ILE 493 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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491A HIS 3.4 3.5 - - - +
492A SER* 1.3 78.1 - - - +
494A ILE* 1.3 60.2 + - + +
495A THR 3.2 0.2 - - - -
496A ASP* 3.0 9.3 + - - +
497A LEU* 2.9 34.2 + - + +
1070A ILE* 3.6 38.4 - - + -
1072A THR* 5.9 4.5 - - + -
102D TRP* 4.1 36.7 - - + +
105D TYR* 4.4 28.7 - - + -
107D LEU* 4.5 9.6 - - + -
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Residues in contact with ILE 494 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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318A GLU* 3.6 21.8 - - - +
319A CYS 4.3 17.0 - - - +
320A ALA* 5.4 0.4 - - - -
335A ILE* 4.4 13.0 - - + -
491A HIS* 3.9 33.2 - - + +
493A ILE* 1.3 77.7 - - + +
495A THR* 1.3 56.1 + - - +
497A LEU* 3.1 13.6 + - + +
498A GLN* 3.0 28.9 + - - +
508A LEU* 3.8 26.0 - - + +
511A TYR* 5.2 12.1 - - + -
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Residues in contact with THR 495 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A ALA* 3.8 20.4 - - + -
321A GLY 3.3 34.4 + - - +
491A HIS 3.2 16.7 + - - -
492A SER* 4.0 10.4 - - - -
493A ILE 3.2 1.0 - - - -
494A ILE* 1.3 75.5 - - - +
496A ASP* 1.3 61.0 + - - +
498A GLN* 4.2 2.1 - - - +
499A ASN* 2.8 44.8 + - - +
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Residues in contact with ASP 496 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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492A SER 4.1 8.9 + - - +
493A ILE 3.0 9.6 + - - +
495A THR* 1.3 86.6 - - - +
497A LEU* 1.3 62.2 + - - +
498A GLN 3.2 1.1 + - - -
499A ASN* 4.0 13.3 + - - +
500A GLY* 3.9 9.9 + - - -
50D ARG* 4.0 27.2 + - + -
54D LEU* 3.6 21.2 - - + +
101D LEU* 4.6 19.4 - - + +
102D TRP* 5.1 11.3 + - + +
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Residues in contact with LEU 497 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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493A ILE* 2.9 27.0 + - + +
494A ILE* 3.1 15.9 + - + +
496A ASP* 1.3 76.7 - - - +
498A GLN* 1.3 57.7 + - - +
500A GLY 4.4 0.7 - - - -
504A THR* 3.3 59.3 + - + +
505A ARG* 3.8 11.3 + - - +
507A ARG* 4.9 22.2 - - + +
508A LEU* 4.5 25.6 - - + +
1070A ILE* 5.6 4.7 - - + -
54D LEU* 5.2 7.9 - - + -
102D TRP* 5.2 9.6 - - + -
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Residues in contact with GLN 498 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A ALA* 5.4 4.5 - - + +
335A ILE* 3.7 45.7 + - + +
336A GLN* 5.9 1.8 - - + +
357A LEU* 4.6 7.5 - - - +
358A ARG* 3.5 40.0 + - - +
494A ILE 3.0 15.5 + - - +
495A THR* 4.3 4.7 - - - +
496A ASP 3.2 0.2 - - - -
497A LEU* 1.3 78.7 - - - +
499A ASN* 1.3 66.9 + - - +
500A GLY 3.2 4.7 - - - -
505A ARG* 3.1 33.3 + - - +
508A LEU* 4.2 10.3 - - + -
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Residues in contact with ASN 499 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A ALA* 5.9 1.0 - - - +
358A ARG* 5.1 10.7 + - - +
495A THR* 2.8 37.9 + - - +
496A ASP* 3.9 14.7 + - - +
498A GLN* 1.3 88.0 + - - +
500A GLY* 1.3 57.4 + - - +
505A ARG* 4.9 1.3 - - - +
47D GLU* 4.1 15.8 - - - +
51D GLN* 4.1 8.0 + - - -
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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