Contacts of the helix formed by residues 356 - 360 (chain E) in PDB entry 4KYI
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 SER 356 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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355E THR* 1.3 80.4 + - - +
357E SER* 1.3 59.7 + - - +
358E VAL* 3.0 19.9 + - - +
359E LEU* 3.2 35.0 + - - +
512E GLU* 3.8 9.6 - - - -
539E TRP* 3.2 16.2 - - - -
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Residues in contact with SER 357 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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356E SER* 1.3 69.4 - - - +
358E VAL* 1.3 53.0 + - - +
359E LEU 3.2 5.4 - - - -
360E ASN* 2.9 18.1 + - - +
362E GLU* 4.1 13.0 + - - -
504E ASN* 4.3 11.3 + - - -
512E GLU* 3.1 32.2 + - - -
538E LEU* 3.9 18.0 + - - +
539E TRP* 3.9 13.9 - - - -
602E GOL 2.3 31.9 + - - -
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Residues in contact with VAL 358 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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356E SER* 3.0 11.2 - - - +
357E SER* 1.3 82.3 - - - +
359E LEU* 1.3 63.1 + - - +
360E ASN 3.3 6.5 - - - +
361E ARG* 4.9 14.4 + - - +
509E GLY* 6.6 0.2 - - - -
512E GLU* 5.5 1.6 - - - +
602E GOL 3.7 20.0 - - - +
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Residues in contact with LEU 359 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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330E GLU* 4.6 9.3 - - - +
334E TRP* 3.6 51.3 + - + +
355E THR 4.3 7.6 - - - +
356E SER* 3.2 41.0 + - - +
357E SER 3.2 1.6 - - - -
358E VAL* 1.3 81.8 - - - +
360E ASN* 1.3 63.4 + - - +
361E ARG* 3.3 15.2 + - - +
539E TRP* 5.1 1.1 - - + -
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Residues in contact with ASN 360 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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327E SER* 5.1 7.9 - - - +
330E GLU* 5.9 1.6 - - + -
331E ALA* 4.5 22.7 + - + +
334E TRP* 4.4 17.5 - - + +
357E SER* 2.9 22.3 + - - +
358E VAL* 3.3 1.7 - - - +
359E LEU* 1.3 84.4 - - - +
361E ARG* 1.3 69.4 + - - +
362E GLU* 3.2 17.7 + - + +
539E TRP* 4.3 20.2 - - - -
602E GOL 3.1 18.9 + - - -
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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